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  • Articles  (1,778)
  • Time Factors  (969)
  • Protein Structure, Tertiary  (811)
  • 2010-2014  (1,040)
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  • Articles  (1,778)
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  • 1
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2002-02-23
    Description: 〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3907122/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3907122/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Falke, Joseph J -- R01 GM040731/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2002 Feb 22;295(5559):1480-1.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Molecular Biophysics Program and the Department of Chemistry and Biochemistry, University of Colorado, Boulder, CO 80309, USA. falke@colorado.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11859184" target="_blank"〉PubMed〈/a〉
    Keywords: Arginine/chemistry ; Binding Sites ; Catalysis ; Cyclophilin A/*chemistry/*metabolism ; Hydrogen Bonding ; Models, Molecular ; Nitrogen/chemistry ; Nuclear Magnetic Resonance, Biomolecular ; Protein Binding ; Protein Conformation ; Protein Folding ; Protein Structure, Secondary ; Protein Structure, Tertiary ; Thermodynamics
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 2
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2002-09-14
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wilson, John H -- Elledge, Stephen J -- New York, N.Y. -- Science. 2002 Sep 13;297(5588):1822-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry and Molecular Biology, Baylor College of Medicine, Houston, TX 77030, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12228708" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; BRCA1 Protein/metabolism ; BRCA2 Protein/*chemistry/*metabolism ; Binding Sites ; Breast Neoplasms/genetics ; Crystallography, X-Ray ; DNA/*metabolism ; DNA Damage ; *DNA Repair ; DNA, Single-Stranded/metabolism ; DNA-Binding Proteins/metabolism ; Female ; Genes, BRCA1 ; Genes, BRCA2 ; Genetic Predisposition to Disease ; Humans ; Mice ; Ovarian Neoplasms/genetics ; Protein Folding ; Protein Structure, Secondary ; Protein Structure, Tertiary ; Rad51 Recombinase ; Rats ; Recombination, Genetic ; Replication Protein A
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 3
    Publication Date: 2002-06-22
    Description: Positive-strand RNA viruses such as poliovirus replicate their genomes on intracellular membranes of their eukaryotic hosts. Electron microscopy has revealed that purified poliovirus RNA-dependent RNA polymerase forms planar and tubular oligomeric arrays. The structural integrity of these arrays correlates with cooperative RNA binding and RNA elongation and is sensitive to mutations that disrupt intermolecular contacts predicted by the polymerase structure. Membranous vesicles isolated from poliovirus-infected cells contain structures consistent with the presence of two-dimensional polymerase arrays on their surfaces during infection. Therefore, host cytoplasmic membranes may function as physical foundations for two-dimensional polymerase arrays, conferring the advantages of surface catalysis to viral RNA replication.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lyle, John M -- Bullitt, Esther -- Bienz, Kurt -- Kirkegaard, Karla -- AI-42119/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 2002 Jun 21;296(5576):2218-22.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Microbiology and Immunology, Stanford University School of Medicine, Stanford, CA 94305, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12077417" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; Binding Sites ; Catalysis ; Crystallography, X-Ray ; HeLa Cells ; Humans ; Hydrogen-Ion Concentration ; Inclusion Bodies, Viral/metabolism/ultrastructure ; Microscopy, Electron ; Models, Molecular ; Molecular Sequence Data ; Mutation ; Nucleic Acid Conformation ; Poliovirus/*enzymology/physiology ; Protein Conformation ; Protein Structure, Quaternary ; Protein Structure, Tertiary ; RNA Replicase/*chemistry/isolation & purification/*metabolism/ultrastructure ; RNA, Viral/biosynthesis/*metabolism ; Viral Core Proteins/metabolism ; Virus Replication
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 4
    Publication Date: 2003-05-31
    Description: Patients with cerebellar damage are known to exhibit deficits in the temporal control of movements. We report that these deficits are restricted to discontinuous movements. Cerebellar patients exhibited no deficit in temporal variability when producing continuous, rhythmic movements. We hypothesize that the temporal properties of continuous movements are emergent and reflect the operation of other control parameters not associated with the cerebellum. In contrast, discontinuous movements require an explicit representation of the temporal goal, a function of the cerebellum. The requirement for explicit temporal representation provides a parsimonious account of cerebellar involvement in a range of tasks.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Spencer, Rebecca M C -- Zelaznik, Howard N -- Diedrichsen, Jorn -- Ivry, Richard B -- NS17778/NS/NINDS NIH HHS/ -- NS30256/NS/NINDS NIH HHS/ -- NS40813/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 2003 May 30;300(5624):1437-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Psychology, University of California, Berkeley, 3210 Tolman Hall #1650, Berkeley, CA 94720, USA. rspencer@socrates.berkeley.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12775842" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Aged ; Aged, 80 and over ; Cerebellar Diseases/*physiopathology ; Cerebellum/physiology/*physiopathology ; Female ; Humans ; Male ; Middle Aged ; *Motor Activity ; Movement ; *Psychomotor Performance ; Spinocerebellar Degenerations/*physiopathology ; Time Factors
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 5
    Publication Date: 2002-02-09
    Description: Double-stranded RNA-mediated gene interference (RNAi) in Caenorhabditis elegans systemically inhibits gene expression throughout the organism. To investigate how gene-specific silencing information is transmitted between cells, we constructed a strain that permits visualization of systemic RNAi. We used this strain to identify systemic RNA interference-deficient (sid) loci required to spread gene-silencing information between tissues but not to initiate or maintain an RNAi response. One of these loci, sid-1, encodes a conserved protein with predicted transmembrane domains. SID-1 is expressed in cells sensitive to RNAi, is localized to the cell periphery, and is required cell-autonomously for systemic RNAi.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Winston, William M -- Molodowitch, Christina -- Hunter, Craig P -- New York, N.Y. -- Science. 2002 Mar 29;295(5564):2456-9. Epub 2002 Feb 7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular and Cellular Biology, Harvard University, 16 Divinity Avenue, Cambridge, MA 02138, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11834782" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Animals, Genetically Modified ; Caenorhabditis elegans/embryology/*genetics/metabolism ; Caenorhabditis elegans Proteins/chemistry/*genetics/*physiology ; Calmodulin-Binding Proteins/genetics ; Cytoplasm/metabolism ; Embryo, Nonmammalian/physiology ; *Gene Silencing ; Genes, Helminth ; Germ Cells/metabolism ; Green Fluorescent Proteins ; Intestines/metabolism ; Luminescent Proteins/genetics ; Membrane Proteins/chemistry/*genetics/*physiology ; Molecular Sequence Data ; Mosaicism ; Muscle Proteins/genetics ; Muscles/metabolism ; Mutation ; Protein Structure, Tertiary ; RNA, Double-Stranded/*genetics/metabolism ; RNA, Helminth/*genetics/metabolism ; Recombinant Fusion Proteins/metabolism ; Transgenes
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 6
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2002-07-06
    Description: Fishery management plans ignore the potential for evolutionary change in harvestable biomass. We subjected populations of an exploited fish (Menidia menidia) to large, small, or random size-selective harvest of adults over four generations. Harvested biomass evolved rapidly in directions counter to the size-dependent force of fishing mortality. Large-harvested populations initially produced the highest catch but quickly evolved a lower yield than controls. Small-harvested populations did the reverse. These shifts were caused by selection of genotypes with slower or faster rates of growth. Management tools that preserve natural genetic variation are necessary for long-term sustainable yield.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Conover, David O -- Munch, Stephan B -- New York, N.Y. -- Science. 2002 Jul 5;297(5578):94-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Marine Sciences Research Center, State University of New York, Stony Brook, NY 11794-5000, USA. dconover@notes.cc.sunysb.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12098697" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Biological Evolution ; Biomass ; Body Constitution ; Body Weight ; Conservation of Natural Resources ; *Fisheries ; Fishes/anatomy & histology/*genetics/*growth & development ; Genetic Variation ; Population Dynamics ; Regression Analysis ; *Selection, Genetic ; Time Factors
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 7
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2002-04-20
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Stone, Richard -- New York, N.Y. -- Science. 2002 Apr 19;296(5567):451-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11964452" target="_blank"〉PubMed〈/a〉
    Keywords: Canada/epidemiology ; Cluster Analysis ; Environmental Exposure/adverse effects ; *Famous Persons ; Female ; History, 21st Century ; Humans ; Male ; Parkinson Disease/*epidemiology/etiology ; *Television ; Time Factors ; Virus Diseases/complications/epidemiology
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  • 8
    Publication Date: 2002-09-21
    Description: Conversion of new memories into a lasting form may involve the gradual refinement and linking together of neural representations stored widely throughout neocortex. This consolidation process may require coordinated reactivation of distributed components of memory traces while the cortex is "offline," i.e., not engaged in processing external stimuli. Simultaneous neural ensemble recordings from four sites in the macaque neocortex revealed such coordinated reactivation. In motor, somatosensory, and parietal cortex (but not prefrontal cortex), the behaviorally induced correlation structure and temporal patterning of neural ensembles within and between regions were preserved, confirming a major tenet of the trace-reactivation theory of memory consolidation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hoffman, K L -- McNaughton, B L -- MH01565/MH/NIMH NIH HHS/ -- New York, N.Y. -- Science. 2002 Sep 20;297(5589):2070-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Neural Systems, Memory, and Aging, University of Arizona, Tucson, AZ 85724, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12242447" target="_blank"〉PubMed〈/a〉
    Keywords: Action Potentials ; Animals ; Brain Mapping ; Cues ; Electrodes, Implanted ; Macaca mulatta ; Male ; Memory/*physiology ; Mental Recall/*physiology ; Motor Cortex/physiology ; Neocortex/*physiology ; Neurons/*physiology ; Parietal Lobe/physiology ; Prefrontal Cortex/physiology ; Somatosensory Cortex/physiology ; Time Factors
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  • 9
    Publication Date: 2003-07-12
    Description: Direct interaction between platelet receptor glycoprotein Ibalpha (GpIbalpha) and thrombin is required for platelet aggregation and activation at sites of vascular injury. Abnormal GpIbalpha-thrombin binding is associated with many pathological conditions,including occlusive arterial thrombosis and bleeding disorders. The crystal structure of the GpIbalpha-thrombin complex at 2.6 angstrom resolution reveals simultaneous interactions of GpIbalpha with exosite I of one thrombin molecule,and with exosite II of a second thrombin molecule. In the crystal lattice,the periodic arrangement of GpIbalpha-thrombin complexes mirrors a scaffold that could serve as a driving force for tight platelet adhesion. The details of these interactions reconcile GpIbalpha-thrombin binding modes that are presently controversial,highlighting two distinct interfaces that are potential targets for development of novel antithrombotic drugs.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dumas, John J -- Kumar, Ravindra -- Seehra, Jasbir -- Somers, William S -- Mosyak, Lidia -- New York, N.Y. -- Science. 2003 Jul 11;301(5630):222-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Chemical and Screening Sciences, Wyeth, 200 Cambridge Park Drive, Cambridge, MA 02140, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12855811" target="_blank"〉PubMed〈/a〉
    Keywords: Binding Sites ; Blood Platelets/chemistry/physiology ; Crystallization ; Crystallography, X-Ray ; Humans ; Hydrogen Bonding ; Hydrophobic and Hydrophilic Interactions ; Models, Molecular ; Platelet Adhesiveness ; *Platelet Aggregation ; Platelet Glycoprotein GPIb-IX Complex/*chemistry/*metabolism ; Protein Binding ; Protein Conformation ; Protein Structure, Secondary ; Protein Structure, Tertiary ; Thrombin/*chemistry/*metabolism
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 10
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2003-07-26
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lubick, Naomi -- New York, N.Y. -- Science. 2003 Jul 25;301(5632):451.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12881542" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Atlantic Ocean ; Conservation of Natural Resources ; DNA, Mitochondrial/genetics ; *Ecosystem ; Female ; Genetic Variation ; Genetics, Population ; Male ; Mutation ; Population Density ; Population Dynamics ; Time Factors ; *Whales/genetics
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  • 11
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2003-07-26
    Description: It is well known that hunting dramatically reduced all baleen whale populations, yet reliable estimates of former whale abundances are elusive. Based on coalescent models for mitochondrial DNA sequence variation, the genetic diversity of North Atlantic whales suggests population sizes of approximately 240,000 humpback, 360,000 fin, and 265,000 minke whales. Estimates for fin and humpback whales are far greater than those previously calculated for prewhaling populations and 6 to 20 times higher than present-day population estimates. Such discrepancies suggest the need for a quantitative reevaluation of historical whale populations and a fundamental revision in our conception of the natural state of the oceans.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Roman, Joe -- Palumbi, Stephen R -- New York, N.Y. -- Science. 2003 Jul 25;301(5632):508-10.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Organismic and Evolutionary Biology, Harvard University, 16 Divinity Avenue, Cambridge, MA 02138, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12881568" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Atlantic Ocean ; Base Sequence ; Conservation of Natural Resources ; DNA, Mitochondrial/genetics ; *Ecosystem ; Female ; Genetic Variation ; Genetics, Population ; Male ; Molecular Sequence Data ; Population Density ; Population Dynamics ; Time Factors ; *Whales/classification/genetics
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 12
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2003-02-01
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hederstedt, Lars -- New York, N.Y. -- Science. 2003 Jan 31;299(5607):671-2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cell and Organism Biology, Lund University, SE-22362 Lund, Sweden. lars.hederstedt@cob.lu.se〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12560540" target="_blank"〉PubMed〈/a〉
    Keywords: Aerobiosis ; Anaerobiosis ; Binding Sites ; Crystallography, X-Ray ; Electron Transport ; Electron Transport Complex II ; Escherichia coli/*enzymology ; Flavin-Adenine Dinucleotide/metabolism ; Heme/chemistry/metabolism ; Models, Molecular ; Multienzyme Complexes/antagonists & inhibitors/*chemistry/*metabolism ; Oxidation-Reduction ; Oxidoreductases/antagonists & inhibitors/*chemistry/*metabolism ; Protein Conformation ; Protein Structure, Tertiary ; Protein Subunits/chemistry ; Reactive Oxygen Species/metabolism ; Succinate Dehydrogenase/antagonists & inhibitors/*chemistry/*metabolism ; Succinic Acid/metabolism ; Ubiquinone/chemistry/metabolism
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 13
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2003-06-07
    Description: Rice is the world's most important food crop and a model for cereal research. At 430 megabases in size, its genome is the most compact of the cereals. We report the sequence of chromosome 10, the smallest of the 12 rice chromosomes (22.4 megabases), which contains 3471 genes. Chromosome 10 contains considerable heterochromatin with an enrichment of repetitive elements on 10S and an enrichment of expressed genes on 10L. Multiple insertions from organellar genomes were detected. Collinearity was apparent between rice chromosome 10 and sorghum and maize. Comparison between the draft and finished sequence demonstrates the importance of finished sequence.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rice Chromosome 10 Sequencing Consortium -- R01-LM06845/LM/NLM NIH HHS/ -- New York, N.Y. -- Science. 2003 Jun 6;300(5625):1566-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12791992" target="_blank"〉PubMed〈/a〉
    Keywords: Chromosomes, Plant/*genetics ; Computational Biology ; DNA Transposable Elements ; DNA, Chloroplast/genetics ; DNA, Mitochondrial/genetics ; DNA, Plant/genetics ; Edible Grain/genetics ; *Evolution, Molecular ; Expressed Sequence Tags ; Genes, Plant ; *Genome, Plant ; Heterochromatin ; Oryza/*genetics/physiology ; Plant Diseases/genetics ; Plant Proteins/chemistry/*genetics/physiology ; Protein Structure, Tertiary ; Proteome ; Repetitive Sequences, Nucleic Acid ; Retroelements ; *Sequence Analysis, DNA ; Zea mays/genetics
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 14
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2003-09-27
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kerr, Richard A -- New York, N.Y. -- Science. 2003 Sep 26;301(5641):1834.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/14512597" target="_blank"〉PubMed〈/a〉
    Keywords: Extraterrestrial Environment ; *Mars ; Space Flight ; *Spacecraft ; Time Factors
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  • 15
    Publication Date: 2003-06-14
    Description: In eukaryotes, the combinatorial association of sequence-specific DNA binding proteins is essential for transcription. We have used protein arrays to test 492 pairings of a nearly complete set of coiled-coil strands from human basic-region leucine zipper (bZIP) transcription factors. We find considerable partnering selectivity despite the bZIPs' homologous sequences. The interaction data are of high quality, as assessed by their reproducibility, reciprocity, and agreement with previous observations. Biophysical studies in solution support the relative binding strengths observed with the arrays. New associations provide insights into the circadian clock and the unfolded protein response.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Newman, John R S -- Keating, Amy E -- New York, N.Y. -- Science. 2003 Jun 27;300(5628):2097-101. Epub 2003 Jun 12.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biology, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12805554" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Basic-Leucine Zipper Transcription Factors ; Chromatography, High Pressure Liquid ; Circadian Rhythm ; Circular Dichroism ; Cyclic AMP Response Element-Binding Protein/chemistry/metabolism ; DNA-Binding Proteins/chemistry/isolation & purification/*metabolism ; Dimerization ; G-Box Binding Factors ; Humans ; *Leucine Zippers ; Peptides/chemistry/isolation & purification/metabolism ; *Protein Array Analysis ; Protein Binding ; Protein Folding ; Protein Structure, Tertiary ; Signal Transduction ; Temperature ; Thermodynamics ; Transcription Factors/*chemistry/isolation & purification/*metabolism
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  • 16
    Publication Date: 2003-09-23
    Description: Dietary restriction (DR) increases life-span in organisms from yeast to mammals, presumably by slowing the accumulation of aging-related damage. Here we show that in Drosophila, DR extends life-span entirely by reducing the short-term risk of death. Two days after the application of DR at any age for the first time, previously fully fed flies are no more likely to die than flies of the same age that have been subjected to long-term DR. DR of mammals may also reduce short-term risk of death, and hence DR instigated at any age could generate a full reversal of mortality.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mair, William -- Goymer, Patrick -- Pletcher, Scott D -- Partridge, Linda -- New York, N.Y. -- Science. 2003 Sep 19;301(5640):1731-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biology, University College London, Darwin Building, Gower Street, London WC1E 6BT, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/14500985" target="_blank"〉PubMed〈/a〉
    Keywords: *Aging ; Animals ; *Caloric Restriction ; Demography ; *Diet ; Drosophila/*physiology ; Female ; *Longevity ; Male ; Mortality ; Reproduction ; Risk ; Temperature ; Time Factors
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  • 17
    Publication Date: 2003-01-11
    Description: In the Pacific Ocean, air and ocean temperatures, atmospheric carbon dioxide, landings of anchovies and sardines, and the productivity of coastal and open ocean ecosystems have varied over periods of about 50 years. In the mid-1970s, the Pacific changed from a cool "anchovy regime" to a warm "sardine regime." A shift back to an anchovy regime occurred in the middle to late 1990s. These large-scale, naturally occurring variations must be taken into account when considering human-induced climate change and the management of ocean living resources.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chavez, Francisco P -- Ryan, John -- Lluch-Cota, Salvador E -- Niquen C, Miguel -- New York, N.Y. -- Science. 2003 Jan 10;299(5604):217-21.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Monterey Bay Aquarium Research Institute, 7700 Sandholdt Road, Moss Landing, CA 95039, USA. chfr@mbari.org〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12522241" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Atmosphere ; Birds ; Carbon Dioxide ; *Climate ; *Ecosystem ; *Fishes ; Pacific Ocean ; *Seawater ; Temperature ; Time Factors
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  • 18
    Publication Date: 2003-05-10
    Description: Multidrug efflux pumps cause serious problems in cancer chemotherapy and treatment of bacterial infections. Yet high-resolution structures of ligand transporter complexes have previously been unavailable. We obtained x-ray crystallographic structures of the trimeric AcrB pump from Escherichia coli with four structurally diverse ligands. The structures show that three molecules of ligands bind simultaneously to the extremely large central cavity of 5000 cubic angstroms, primarily by hydrophobic, aromatic stacking and van der Waals interactions. Each ligand uses a slightly different subset of AcrB residues for binding. The bound ligand molecules often interact with each other, stabilizing the binding.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Yu, Edward W -- McDermott, Gerry -- Zgurskaya, Helen I -- Nikaido, Hiroshi -- Koshland, Daniel E Jr -- AI 09644/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 2003 May 9;300(5621):976-80.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular and Cell Biology, University of California, Berkeley, CA 94720-3202, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12738864" target="_blank"〉PubMed〈/a〉
    Keywords: Anti-Infective Agents/chemistry/metabolism ; Anti-Infective Agents, Local/chemistry/metabolism ; Binding Sites ; Carrier Proteins/*chemistry/isolation & purification/*metabolism ; Cell Membrane/chemistry ; Chemistry, Physical ; Ciprofloxacin/chemistry/metabolism ; Crystallization ; Crystallography, X-Ray ; Dequalinium/chemistry/metabolism ; Escherichia coli Proteins/*chemistry/isolation & purification/*metabolism ; Ethidium/chemistry/metabolism ; Hydrogen Bonding ; Hydrophobic and Hydrophilic Interactions ; Ligands ; Membrane Proteins/*chemistry/isolation & purification/*metabolism ; Models, Molecular ; Multidrug Resistance-Associated Proteins ; Physicochemical Phenomena ; Protein Binding ; Protein Conformation ; Protein Structure, Quaternary ; Protein Structure, Secondary ; Protein Structure, Tertiary ; Rhodamines/chemistry/metabolism ; Static Electricity
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  • 19
    Publication Date: 2003-07-19
    Description: We collected and completely sequenced 28,469 full-length complementary DNA clones from Oryza sativa L. ssp. japonica cv. Nipponbare. Through homology searches of publicly available sequence data, we assigned tentative protein functions to 21,596 clones (75.86%). Mapping of the cDNA clones to genomic DNA revealed that there are 19,000 to 20,500 transcription units in the rice genome. Protein informatics analysis against the InterPro database revealed the existence of proteins presented in rice but not in Arabidopsis. Sixty-four percent of our cDNAs are homologous to Arabidopsis proteins.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rice Full-Length cDNA Consortium -- National Institute of Agrobiological Sciences Rice Full-Length cDNA Project Team -- Kikuchi, Shoshi -- Satoh, Kouji -- Nagata, Toshifumi -- Kawagashira, Nobuyuki -- Doi, Koji -- Kishimoto, Naoki -- Yazaki, Junshi -- Ishikawa, Masahiro -- Yamada, Hitomi -- Ooka, Hisako -- Hotta, Isamu -- Kojima, Keiichi -- Namiki, Takahiro -- Ohneda, Eisuke -- Yahagi, Wataru -- Suzuki, Kohji -- Li, Chao Jie -- Ohtsuki, Kenji -- Shishiki, Toru -- Foundation of Advancement of International Science Genome Sequencing & Analysis Group -- Otomo, Yasuhiro -- Murakami, Kazuo -- Iida, Yoshiharu -- Sugano, Sumio -- Fujimura, Tatsuto -- Suzuki, Yutaka -- Tsunoda, Yuki -- Kurosaki, Takashi -- Kodama, Takeko -- Masuda, Hiromi -- Kobayashi, Michie -- Xie, Quihong -- Lu, Min -- Narikawa, Ryuya -- Sugiyama, Akio -- Mizuno, Kouichi -- Yokomizo, Satoko -- Niikura, Junko -- Ikeda, Rieko -- Ishibiki, Junya -- Kawamata, Midori -- Yoshimura, Akemi -- Miura, Junichirou -- Kusumegi, Takahiro -- Oka, Mitsuru -- Ryu, Risa -- Ueda, Mariko -- Matsubara, Kenichi -- RIKEN -- Kawai, Jun -- Carninci, Piero -- Adachi, Jun -- Aizawa, Katsunori -- Arakawa, Takahiro -- Fukuda, Shiro -- Hara, Ayako -- Hashizume, Wataru -- Hayatsu, Norihito -- Imotani, Koichi -- Ishii, Yoshiyuki -- Itoh, Masayoshi -- Kagawa, Ikuko -- Kondo, Shinji -- Konno, Hideaki -- Miyazaki, Ai -- Osato, Naoki -- Ota, Yoshimi -- Saito, Rintaro -- Sasaki, Daisuke -- Sato, Kenjiro -- Shibata, Kazuhiro -- Shinagawa, Akira -- Shiraki, Toshiyuki -- Yoshino, Masayasu -- Hayashizaki, Yoshihide -- Yasunishi, Ayako -- New York, N.Y. -- Science. 2003 Jul 18;301(5631):376-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Biology, National Institute of Agrobiological Sciences, 2-1-2 Kannon-dai, Tsukuba, Ibaraki 305-8602, Japan. skikuchi@nias.affrc.go.jp〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12869764" target="_blank"〉PubMed〈/a〉
    Keywords: Alternative Splicing ; Amino Acid Sequence ; Cloning, Molecular ; Computational Biology ; DNA, Complementary ; Databases, Nucleic Acid ; Databases, Protein ; Genes, Plant ; *Genome, Plant ; Molecular Sequence Data ; Open Reading Frames ; Oryza/*genetics ; Plant Proteins/chemistry/genetics/physiology ; Protein Structure, Tertiary ; RNA, Antisense/genetics ; *Sequence Analysis, DNA ; Sequence Homology, Amino Acid ; Sequence Homology, Nucleic Acid ; Transcription Factors/chemistry/genetics ; Transcription, Genetic
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  • 20
    Publication Date: 2003-09-23
    Description: Although critical for development, immunity, wound healing, and metastasis, integrins represent one of the few classes of plasma membrane receptors for which the basic signaling mechanism remains a mystery. We investigated cytoplasmic conformational changes in the integrin LFA-1 (alphaLbeta2) in living cells by measuring fluorescence resonance energy transfer between cyan fluorescent protein-fused and yellow fluorescent protein-fused alphaL and beta2 cytoplasmic domains. In the resting state these domains were close to each other, but underwent significant spatial separation upon either intracellular activation of integrin adhesiveness (inside-out signaling) or ligand binding (outside-in signaling). Thus, bidirectional integrin signaling is accomplished by coupling extracellular conformational changes to an unclasping and separation of the alpha and beta cytoplasmic domains, a distinctive mechanism for transmitting information across the plasma membrane.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kim, Minsoo -- Carman, Christopher V -- Springer, Timothy A -- CA31798/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 2003 Sep 19;301(5640):1720-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉CBR Institute for Biomedical Research, Department of Pathology, Harvard Medical School, 200 Longwood Avenue, Boston, MA 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/14500982" target="_blank"〉PubMed〈/a〉
    Keywords: Antibodies, Monoclonal ; Antigens, CD11a/*chemistry ; Antigens, CD18/*chemistry ; Bacterial Proteins ; Cell Adhesion ; Cell Membrane/*metabolism ; Chemokine CXCL12 ; Chemokines, CXC/metabolism ; Cytoplasm/*chemistry ; Dimerization ; Fluorescence Resonance Energy Transfer ; Green Fluorescent Proteins ; Humans ; Intercellular Adhesion Molecule-1/metabolism ; Ligands ; Luminescent Proteins ; Lymphocyte Function-Associated Antigen-1/chemistry/*metabolism ; Protein Conformation ; Protein Structure, Tertiary ; Receptors, CXCR4/metabolism ; Recombinant Fusion Proteins/chemistry ; *Signal Transduction ; Talin/chemistry/metabolism ; Transfection ; Tumor Cells, Cultured
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  • 21
    Publication Date: 2000-08-01
    Description: The path of the nucleic acids through a transcription elongation complex was tracked by mapping cross-links between bacterial RNA polymerase (RNAP) and transcript RNA or template DNA onto the x-ray crystal structure. In the resulting model, the downstream duplex DNA is nestled in a trough formed by the beta' subunit and enclosed on top by the beta subunit. In the RNAP channel, the RNA/DNA hybrid extends from the enzyme active site, along a region of the beta subunit harboring rifampicin resistance mutations, to the beta' subunit "rudder." The single-stranded RNA is then extruded through another channel formed by the beta-subunit flap domain. The model provides insight into the functional properties of the transcription complex.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Korzheva, N -- Mustaev, A -- Kozlov, M -- Malhotra, A -- Nikiforov, V -- Goldfarb, A -- Darst, S A -- GM30717/GM/NIGMS NIH HHS/ -- GM49242/GM/NIGMS NIH HHS/ -- GM53759/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2000 Jul 28;289(5479):619-25.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Public Health Research Institute, 455 First Avenue, New York, NY 10016, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10915625" target="_blank"〉PubMed〈/a〉
    Keywords: Binding Sites ; Cross-Linking Reagents ; Crystallography, X-Ray ; DNA/chemistry/genetics/*metabolism ; DNA Primers ; DNA-Directed RNA Polymerases/*chemistry/genetics/metabolism ; Models, Molecular ; Mutation ; Nucleic Acid Conformation ; Nucleic Acid Hybridization ; Oligodeoxyribonucleotides/chemistry/metabolism ; Oligoribonucleotides/chemistry/metabolism ; Protein Conformation ; Protein Structure, Tertiary ; RNA, Messenger/chemistry/genetics/*metabolism ; Templates, Genetic ; Thermus/enzymology ; *Transcription, Genetic
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  • 22
    Publication Date: 2000-09-01
    Description: Activation of the transcription factor nuclear factor (NF)-kappaB by proinflammatory stimuli leads to increased expression of genes involved in inflammation. Activation of NF-kappaB requires the activity of an inhibitor of kappaB (IkappaB)-kinase (IKK) complex containing two kinases (IKKalpha and IKKbeta) and the regulatory protein NEMO (NF-kappaB essential modifier). An amino-terminal alpha-helical region of NEMO associated with a carboxyl-terminal segment of IKKalpha and IKKbeta that we term the NEMO-binding domain (NBD). A cell-permeable NBD peptide blocked association of NEMO with the IKK complex and inhibited cytokine-induced NF-kappaB activation and NF-kappaB-dependent gene expression. The peptide also ameliorated inflammatory responses in two experimental mouse models of acute inflammation. The NBD provides a target for the development of drugs that would block proinflammatory activation of the IKK complex without inhibiting basal NF-kappaB activity.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉May, M J -- D'Acquisto, F -- Madge, L A -- Glockner, J -- Pober, J S -- Ghosh, S -- AI 33443/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 2000 Sep 1;289(5484):1550-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Section of Immunobiology and Department of Molecular Biophysics and Biochemistry, Howard Hughes Medical Institute, Yale University School of Medicine, New Haven, CT 06510, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10968790" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Anti-Inflammatory Agents, Non-Steroidal/chemistry/pharmacology ; COS Cells ; Cells, Cultured ; E-Selectin/biosynthesis/genetics ; Endothelium, Vascular/metabolism ; Gene Expression Regulation ; HeLa Cells ; Humans ; I-kappa B Kinase ; Inflammation/drug therapy ; Mice ; Mice, Inbred C57BL ; Molecular Sequence Data ; Mutation ; NF-kappa B/*metabolism ; Peptides/chemistry/*pharmacology ; Point Mutation ; Protein Structure, Tertiary ; Protein-Serine-Threonine Kinases/chemistry/genetics/*metabolism ; Recombinant Fusion Proteins/metabolism
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  • 23
    Publication Date: 2000-01-15
    Description: Murine T10 and T22 are highly related nonclassical major histocompatibility complex (MHC) class Ib proteins that bind to certain gammadelta T cell receptors (TCRs) in the absence of other components. The crystal structure of T22b at 3.1 angstroms reveals similarities to MHC class I molecules, but one side of the normal peptide-binding groove is severely truncated, which allows direct access to the beta-sheet floor. Potential gammadelta TCR-binding sites can be inferred from functional mapping of T10 and T22 point mutants and allelic variants. Thus, T22 represents an unusual variant of the MHC-like fold and indicates that gammadelta and alphabeta TCRs interact differently with their respective MHC ligands.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wingren, C -- Crowley, M P -- Degano, M -- Chien, Y -- Wilson, I A -- AI33431/AI/NIAID NIH HHS/ -- CA58896/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 2000 Jan 14;287(5451):310-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Biology and the Skaggs Institute for Chemical Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10634787" target="_blank"〉PubMed〈/a〉
    Keywords: Alleles ; Amino Acid Substitution ; Animals ; Binding Sites ; Crystallography, X-Ray ; Glycosylation ; Histocompatibility Antigens Class I/*chemistry ; Hydrogen Bonding ; Ligands ; Mice ; Models, Molecular ; Point Mutation ; Protein Conformation ; Protein Folding ; Protein Structure, Quaternary ; Protein Structure, Secondary ; Protein Structure, Tertiary ; Proteins/*chemistry/immunology/metabolism ; Receptors, Antigen, T-Cell, gamma-delta/immunology/*metabolism ; Surface Properties ; beta 2-Microglobulin/chemistry
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  • 24
    Publication Date: 2000-03-17
    Description: Chronic blockade of dopamine D2 receptors, a common mechanism of action for antipsychotic drugs, down-regulates D1 receptors in the prefrontal cortex and, as shown here, produces severe impairments in working memory. These deficits were reversed in monkeys by short-term coadministration of a D1 agonist, ABT 431, and this improvement was sustained for more than a year after cessation of D1 treatment. These findings indicate that pharmacological modulation of the D1 signaling pathway can produce long-lasting changes in functional circuits underlying working memory. Resetting this pathway by brief exposure to the agonist may provide a valuable strategy for therapeutic intervention in schizophrenia and other dopamine dysfunctional states.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Castner, S A -- Williams, G V -- Goldman-Rakic, P S -- P01DA10160/DA/NIDA NIH HHS/ -- P50MH44866/MH/NIMH NIH HHS/ -- New York, N.Y. -- Science. 2000 Mar 17;287(5460):2020-2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Section of Neurobiology, Yale University School of Medicine, 333 Cedar Street, New Haven, CT 06510, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10720329" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antipsychotic Agents/*pharmacology ; Cyclic AMP/metabolism ; Dopamine/metabolism ; Dopamine Agonists/*pharmacology ; Dopamine Antagonists/pharmacology ; Down-Regulation ; Female ; Haloperidol/*pharmacology ; Haplorhini ; Memory/*drug effects ; Prefrontal Cortex/drug effects/metabolism ; Psychomotor Performance/drug effects ; Pyridines/*pharmacology ; Receptors, Dopamine D1/agonists/*metabolism ; Signal Transduction ; Tetrahydronaphthalenes/*pharmacology ; Time Factors
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  • 25
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2000-02-26
    Description: Repetition priming has been characterized neurophysiologically as a decreased response following stimulus repetition. The present study used event-related functional magnetic resonance imaging to investigate whether this repetition-related response is sensitive to stimulus familiarity. A right fusiform region exhibited an attenuated response to the repetition of familiar stimuli, both faces and symbols, but exhibited an enhanced response to the repetition of unfamiliar stimuli. Moreover, both repetition effects were modulated by lag between successive presentations. Further experiments replicated the interactions between repetition, familiarity, and lag and demonstrated the persistence of these effects over multiple repetitions. Priming-related responses are therefore not unitary but depend on the presence or absence of preexisting stimulus representations.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Henson, R -- Shallice, T -- Dolan, R -- New York, N.Y. -- Science. 2000 Feb 18;287(5456):1269-72.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Wellcome Department of Cognitive Neurology, Institute of Neurology, Institute of Cognitive Neuroscience and Department of Psychology, University College London, London WC1E 6BT, UK. r.henson@ucl.ac.uk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10678834" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Brain Mapping ; Face ; Female ; Humans ; Magnetic Resonance Imaging ; Male ; Memory/*physiology ; *Pattern Recognition, Visual ; Regression Analysis ; Temporal Lobe/*physiology ; Time Factors
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  • 26
    Publication Date: 2000-12-16
    Description: The completion of the Arabidopsis thaliana genome sequence allows a comparative analysis of transcriptional regulators across the three eukaryotic kingdoms. Arabidopsis dedicates over 5% of its genome to code for more than 1500 transcription factors, about 45% of which are from families specific to plants. Arabidopsis transcription factors that belong to families common to all eukaryotes do not share significant similarity with those of the other kingdoms beyond the conserved DNA binding domains, many of which have been arranged in combinations specific to each lineage. The genome-wide comparison reveals the evolutionary generation of diversity in the regulation of transcription.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Riechmann, J L -- Heard, J -- Martin, G -- Reuber, L -- Jiang, C -- Keddie, J -- Adam, L -- Pineda, O -- Ratcliffe, O J -- Samaha, R R -- Creelman, R -- Pilgrim, M -- Broun, P -- Zhang, J Z -- Ghandehari, D -- Sherman, B K -- Yu, G -- New York, N.Y. -- Science. 2000 Dec 15;290(5499):2105-10.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Mendel Biotechnology, 21375 Cabot Boulevard, Hayward, CA 94545, USA. jriechmann@mendelbio.com〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11118137" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Motifs ; Animals ; Arabidopsis/chemistry/*genetics ; Caenorhabditis elegans/chemistry/*genetics ; DNA/metabolism ; Drosophila melanogaster/chemistry/*genetics ; Eukaryotic Cells ; Evolution, Molecular ; Gene Duplication ; *Genome ; Genome, Plant ; Protein Binding ; Protein Structure, Tertiary ; Saccharomyces cerevisiae/chemistry/*genetics ; Transcription Factors/chemistry/*genetics/metabolism
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  • 27
    Publication Date: 2000-07-06
    Description: A conserved domain in the extracellular region of the 60- and 80-kilodalton tumor necrosis factor receptors (TNFRs) was identified that mediates specific ligand-independent assembly of receptor trimers. This pre-ligand-binding assembly domain (PLAD) is physically distinct from the domain that forms the major contacts with ligand, but is necessary and sufficient for the assembly of TNFR complexes that bind TNF-alpha and mediate signaling. Other members of the TNFR superfamily, including TRAIL receptor 1 and CD40, show similar homotypic association. Thus, TNFRs and related receptors appear to function as preformed complexes rather than as individual receptor subunits that oligomerize after ligand binding.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chan, F K -- Chun, H J -- Zheng, L -- Siegel, R M -- Bui, K L -- Lenardo, M J -- New York, N.Y. -- Science. 2000 Jun 30;288(5475):2351-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Immunology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10875917" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Substitution ; Antigens, CD/chemistry/metabolism ; Apoptosis ; Binding Sites ; Cross-Linking Reagents ; Dimerization ; Energy Transfer ; Fluorescence ; Humans ; Ligands ; Macromolecular Substances ; Mutation ; Protein Conformation ; Protein Structure, Tertiary ; Receptors, Tumor Necrosis Factor/*chemistry/*metabolism ; Receptors, Tumor Necrosis Factor, Type I ; Receptors, Tumor Necrosis Factor, Type II ; Recombinant Fusion Proteins/chemistry/metabolism ; *Signal Transduction ; Succinimides ; Tumor Cells, Cultured ; Tumor Necrosis Factor-alpha/*metabolism
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  • 28
    Publication Date: 2000-08-19
    Description: In thioredoxin reductase (TrxR) from Escherichia coli, cycles of reduction and reoxidation of the flavin adenine dinucleotide (FAD) cofactor depend on rate-limiting rearrangements of the FAD and NADPH (reduced form of nicotinamide adenine dinucleotide phosphate) domains. We describe the structure of the flavin-reducing conformation of E. coli TrxR at a resolution of 3.0 angstroms. The orientation of the two domains permits reduction of FAD by NADPH and oxidation of the enzyme dithiol by the protein substrate, thioredoxin. The alternate conformation, described by Kuriyan and co-workers, permits internal transfer of reducing equivalents from reduced FAD to the active-site disulfide. Comparison of these structures demonstrates that switching between the two conformations involves a "ball-and-socket" motion in which the pyridine nucleotide-binding domain rotates by 67 degrees.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lennon, B W -- Williams, C H Jr -- Ludwig, M L -- GM16429/GM/NIGMS NIH HHS/ -- GM18723/GM/NIGMS NIH HHS/ -- GM21444/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2000 Aug 18;289(5482):1190-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Biophysics Research Division, Department of Biological Chemistry, University of Michigan, Ann Arbor, MI 48109, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10947986" target="_blank"〉PubMed〈/a〉
    Keywords: Binding Sites ; Catalysis ; Crystallography, X-Ray ; Escherichia coli/*enzymology ; Flavin-Adenine Dinucleotide/metabolism ; Hydrogen Bonding ; Models, Molecular ; NADP/metabolism ; Oxidation-Reduction ; Protein Conformation ; Protein Structure, Tertiary ; Thioredoxin-Disulfide Reductase/*chemistry/*metabolism ; Thioredoxins/metabolism
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  • 29
    Publication Date: 2000-11-25
    Description: We generated a mutant of the red fluorescent protein drFP583. The mutant (E5) changes its fluorescence from green to red over time. The rate of color conversion is independent of protein concentration and therefore can be used to trace time-dependent expression. We used in vivo labeling with E5 to measure expression from the heat shock-dependent promoter in Caenorhabditis elegans and from the Otx-2 promoter in developing Xenopus embryos. Thus, E5 is a "fluorescent timer" that can be used to monitor both activation and down-regulation of target promoters on the whole-organism scale.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Terskikh, A -- Fradkov, A -- Ermakova, G -- Zaraisky, A -- Tan, P -- Kajava, A V -- Zhao, X -- Lukyanov, S -- Matz, M -- Kim, S -- Weissman, I -- Siebert, P -- 1 RO3 TW01362-01/TW/FIC NIH HHS/ -- New York, N.Y. -- Science. 2000 Nov 24;290(5496):1585-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉School of Medicine, Stanford University, Stanford, CA 94305, USA. Alexey.Terskikh@Stanford.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11090358" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Brain/embryology/metabolism ; Caenorhabditis elegans/embryology/genetics ; Cell Line ; Color ; Fluorescence ; Gene Expression Profiling/*methods ; *Gene Expression Regulation ; Gene Expression Regulation, Developmental ; Heat-Shock Proteins/genetics ; *Homeodomain Proteins ; Humans ; Luminescent Proteins/*chemistry/*genetics/metabolism ; Mutation ; Nerve Tissue Proteins/genetics ; Otx Transcription Factors ; *Promoter Regions, Genetic ; Temperature ; Time Factors ; Trans-Activators/genetics ; Xenopus laevis/embryology
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  • 30
    Publication Date: 2000-02-05
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gibbons, R D -- Meltzer, D -- Duan, N -- New York, N.Y. -- Science. 2000 Jan 14;287(5451):237-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉University of Illinois at Chicago, Chicago, IL 60612, USA. rdgib@uic.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10660422" target="_blank"〉PubMed〈/a〉
    Keywords: *Government Regulation ; Health Policy ; Humans ; Institute of Medicine (U.S.) ; *Liver Transplantation/mortality ; *Organ Transplantation/mortality ; *Patient Selection ; *Resource Allocation ; Time Factors ; *Tissue and Organ Procurement/legislation & jurisprudence/standards ; United States
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  • 31
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2000-05-08
    Description: Human herpesviruses are large and structurally complex viruses that cause a variety of diseases. The three-dimensional structure of the herpesvirus capsid has been determined at 8.5 angstrom resolution by electron cryomicroscopy. More than 30 putative alpha helices were identified in the four proteins that make up the 0.2 billion-dalton shell. Some of these helices are located at domains that undergo conformational changes during capsid assembly and DNA packaging. The unique spatial arrangement of the heterotrimer at the local threefold positions accounts for the asymmetric interactions with adjacent capsid components and the unusual co-dependent folding of its subunits.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zhou, Z H -- Dougherty, M -- Jakana, J -- He, J -- Rixon, F J -- Chiu, W -- New York, N.Y. -- Science. 2000 May 5;288(5467):877-80.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pathology and Laboratory Medicine, University of Texas-Houston Medical School, Houston, TX 77030, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10797014" target="_blank"〉PubMed〈/a〉
    Keywords: Capsid/*chemistry/*ultrastructure ; Capsid Proteins ; Cryoelectron Microscopy ; Herpesvirus 1, Human/chemistry/*ultrastructure ; Image Processing, Computer-Assisted ; Models, Molecular ; Molecular Weight ; Protein Conformation ; Protein Folding ; Protein Structure, Quaternary ; Protein Structure, Secondary ; Protein Structure, Tertiary
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  • 32
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2001-02-24
    Description: RNA editing is a fascinating phenomenon that is found in both animal and plant cells. By converting an adenosine base to an inosine (which behaves like guanosine) in RNA that has already been transcribed, certain RNA sequences (and hence the amino acids they encode) are altered. In a Perspective, Keegan, Gallo and O'Connell explore new results showing that activity of the editing enzyme ADAR1 is crucial for normal development of red blood cells in mouse embryos.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Keegan, L P -- Gallo, A -- O'Connell, M A -- New York, N.Y. -- Science. 2000 Dec 1;290(5497):1707-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉MRC Human Genetics Unit, Western General Hospital, Edinburgh EH4 2XU, UK. liam.keegan@hgu.mrc.ac.uk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11186391" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine/metabolism ; Adenosine Deaminase/chemistry/*genetics/*metabolism ; Animals ; Base Pairing ; Central Nervous System/metabolism ; Chimera ; Drosophila/genetics/metabolism ; Embryo, Mammalian/cytology ; Embryo, Nonmammalian ; *Erythropoiesis ; Gene Dosage ; Hematopoietic Stem Cells/cytology/enzymology ; Inosine/metabolism ; Liver/metabolism ; Mice ; Mutation ; Phenotype ; Protein Structure, Tertiary ; *RNA Editing ; RNA Precursors/metabolism ; RNA, Double-Stranded/metabolism ; RNA-Binding Proteins ; Receptors, AMPA/genetics ; Stem Cells/cytology/enzymology ; Teratoma/genetics/pathology
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  • 33
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2000-03-31
    Description: All cellular organisms use specialized RNA polymerases called "primases" to synthesize RNA primers for the initiation of DNA replication. The high-resolution crystal structure of a primase, comprising the catalytic core of the Escherichia coli DnaG protein, was determined. The core structure contains an active-site architecture that is unrelated to other DNA or RNA polymerase palm folds, but is instead related to the "toprim" fold. On the basis of the structure, it is likely that DnaG binds nucleic acid in a groove clustered with invariant residues and that DnaG is positioned within the replisome to accept single-stranded DNA directly from the replicative helicase.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Keck, J L -- Roche, D D -- Lynch, A S -- Berger, J M -- New York, N.Y. -- Science. 2000 Mar 31;287(5462):2482-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular and Cell Biology, University of California, Berkeley, 229 Stanley Hall, no. 3206, Berkeley, CA 94720, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10741967" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Motifs ; Amino Acid Sequence ; Binding Sites ; Catalytic Domain ; Crystallography, X-Ray ; DNA Helicases/chemistry/metabolism ; DNA Primase/*chemistry/*metabolism ; DNA Replication ; DNA, Bacterial/metabolism ; DNA, Single-Stranded/*metabolism ; DNA-Directed RNA Polymerases/*chemistry/metabolism ; Escherichia coli/*enzymology/metabolism ; Metals/metabolism ; Models, Molecular ; Molecular Sequence Data ; Nucleic Acid Hybridization ; Protein Conformation ; Protein Folding ; Protein Structure, Secondary ; Protein Structure, Tertiary ; RNA/biosynthesis ; Recombinant Proteins/chemistry/metabolism ; Templates, Genetic
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  • 34
    Publication Date: 2000-08-26
    Description: Polyadenylate [poly(A)] polymerase (PAP) catalyzes the addition of a polyadenosine tail to almost all eukaryotic messenger RNAs (mRNAs). The crystal structure of the PAP from Saccharomyces cerevisiae (Pap1) has been solved to 2.6 angstroms, both alone and in complex with 3'-deoxyadenosine triphosphate (3'-dATP). Like other nucleic acid polymerases, Pap1 is composed of three domains that encircle the active site. The arrangement of these domains, however, is quite different from that seen in polymerases that use a template to select and position their incoming nucleotides. The first two domains are functionally analogous to polymerase palm and fingers domains. The third domain is attached to the fingers domain and is known to interact with the single-stranded RNA primer. In the nucleotide complex, two molecules of 3'-dATP are bound to Pap1. One occupies the position of the incoming base, prior to its addition to the mRNA chain. The other is believed to occupy the position of the 3' end of the mRNA primer.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bard, J -- Zhelkovsky, A M -- Helmling, S -- Earnest, T N -- Moore, C L -- Bohm, A -- R01 GM57218-01A2/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2000 Aug 25;289(5483):1346-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Boston Biomedical Research Institute, 64 Grove Street, Watertown, MA 02472, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10958780" target="_blank"〉PubMed〈/a〉
    Keywords: Binding Sites ; Catalytic Domain ; Crystallography, X-Ray ; Deoxyadenine Nucleotides/*chemistry/*metabolism ; Hydrogen Bonding ; Manganese/metabolism ; Models, Molecular ; Mutation ; Polynucleotide Adenylyltransferase/*chemistry/genetics/*metabolism ; Protein Conformation ; Protein Structure, Secondary ; Protein Structure, Tertiary ; RNA/metabolism ; RNA, Messenger/metabolism ; Ribosomal Protein S6 ; Ribosomal Proteins/chemistry/metabolism ; Saccharomyces cerevisiae/*enzymology
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  • 35
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2000-09-23
    Description: Nascent polypeptides emerging from the ribosome and not yet folded may at least transiently present degradation signals similar to those recognized by the ubiquitin system in misfolded proteins. The ubiquitin sandwich technique was used to detect and measure cotranslational protein degradation in living cells. More than 50 percent of nascent protein molecules bearing an amino-terminal degradation signal can be degraded cotranslationally, never reaching their mature size before their destruction by processive proteolysis. Thus, the folding of nascent proteins, including abnormal ones, may be in kinetic competition with pathways that target these proteins for degradation cotranslationally.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Turner, G C -- Varshavsky, A -- New York, N.Y. -- Science. 2000 Sep 22;289(5487):2117-20.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Biology, California Institute of Technology, Pasadena, CA 91125, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11000112" target="_blank"〉PubMed〈/a〉
    Keywords: Cysteine Endopeptidases/metabolism ; DNA-Directed RNA Polymerases/metabolism ; Endopeptidases/metabolism ; Fungal Proteins/metabolism ; *Ligases ; Multienzyme Complexes/metabolism ; Peptides/*metabolism ; Proteasome Endopeptidase Complex ; *Protein Biosynthesis ; Protein Folding ; Protein Structure, Tertiary ; Recombinant Fusion Proteins/metabolism ; Saccharomyces cerevisiae/metabolism ; *Saccharomyces cerevisiae Proteins ; Tetrahydrofolate Dehydrogenase/metabolism ; *Ubiquitin-Protein Ligases ; Ubiquitins/metabolism ; beta-Galactosidase/metabolism
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  • 36
    Publication Date: 2000-11-10
    Description: Reciprocal gene activation and restriction during cell type differentiation from a common lineage is a hallmark of mammalian organogenesis. A key question, then, is whether a critical transcriptional activator of cell type-specific gene targets can also restrict expression of the same genes in other cell types. Here, we show that whereas the pituitary-specific POU domain factor Pit-1 activates growth hormone gene expression in one cell type, the somatotrope, it restricts its expression from a second cell type, the lactotrope. This distinction depends on a two-base pair spacing in accommodation of the bipartite POU domains on a conserved growth hormone promoter site. The allosteric effect on Pit-1, in combination with other DNA binding factors, results in the recruitment of a corepressor complex, including nuclear receptor corepressor N-CoR, which, unexpectedly, is required for active long-term repression of the growth hormone gene in lactotropes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Scully, K M -- Jacobson, E M -- Jepsen, K -- Lunyak, V -- Viadiu, H -- Carriere, C -- Rose, D W -- Hooshmand, F -- Aggarwal, A K -- Rosenfeld, M G -- R01 DK18477/DK/NIDDK NIH HHS/ -- R01 DK54802/DK/NIDDK NIH HHS/ -- R01 GM49327/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2000 Nov 10;290(5494):1127-31.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, Department of Endocrinology and Metabolism, School of Medicine, University of California, San Diego, La Jolla, CA 92093, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11073444" target="_blank"〉PubMed〈/a〉
    Keywords: Allosteric Regulation ; Animals ; Base Sequence ; Binding Sites ; Cell Line ; Conserved Sequence ; Crystallization ; DNA/*metabolism ; DNA-Binding Proteins/chemistry/genetics/*metabolism ; Female ; *Gene Expression Regulation ; Genes, Reporter ; Growth Hormone/*genetics ; Male ; Mice ; Mice, Transgenic ; Models, Molecular ; Molecular Sequence Data ; Nuclear Proteins/genetics/metabolism ; Nuclear Receptor Co-Repressor 1 ; Pituitary Gland/cytology/*metabolism ; Prolactin/*genetics ; Promoter Regions, Genetic ; Protein Conformation ; Protein Structure, Tertiary ; Rats ; Repressor Proteins/chemistry/genetics/*metabolism ; Transcription Factor Pit-1 ; Transcription Factors/chemistry/genetics/*metabolism ; Transcriptional Activation
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  • 37
    Publication Date: 2000-02-26
    Description: The signal recognition particle (SRP), a protein-RNA complex conserved in all three kingdoms of life, recognizes and transports specific proteins to cellular membranes for insertion or secretion. We describe here the 1.8 angstrom crystal structure of the universal core of the SRP, revealing protein recognition of a distorted RNA minor groove. Nucleotide analog interference mapping demonstrates the biological importance of observed interactions, and genetic results show that this core is functional in vivo. The structure explains why the conserved residues in the protein and RNA are required for SRP assembly and defines a signal sequence recognition surface composed of both protein and RNA.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Batey, R T -- Rambo, R P -- Lucast, L -- Rha, B -- Doudna, J A -- New York, N.Y. -- Science. 2000 Feb 18;287(5456):1232-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Biophysics and Biochemistry, Howard Hughes Medical Institute, Yale University, New Haven, CT 06511, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10678824" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Bacterial Proteins/*chemistry/metabolism ; Base Pairing ; Binding Sites ; Cell Membrane/metabolism ; Crystallography, X-Ray ; Escherichia coli/chemistry/genetics/metabolism ; *Escherichia coli Proteins ; Guanosine Triphosphate/metabolism ; Hydrogen Bonding ; Magnesium/metabolism ; Models, Molecular ; Molecular Sequence Data ; Nucleic Acid Conformation ; Potassium/metabolism ; Protein Binding ; Protein Conformation ; Protein Structure, Secondary ; Protein Structure, Tertiary ; RNA, Bacterial/*chemistry/genetics/metabolism ; Signal Recognition Particle/*chemistry/metabolism ; Transformation, Bacterial ; Water/metabolism
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  • 38
    Publication Date: 2001-12-01
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Streets, D G -- Jiang, K -- Hu, X -- Sinton, J E -- Zhang, X Q -- Xu, D -- Jacobson, M Z -- Hansen, J E -- New York, N.Y. -- Science. 2001 Nov 30;294(5548):1835-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Decision and Information Sciences Division, Argonne National Laboratory, Argonne, IL 60439, USA. dstreets@anl.gov〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11729288" target="_blank"〉PubMed〈/a〉
    Keywords: Bioelectric Energy Sources/economics ; Carbon Dioxide/*metabolism ; China ; Coal/economics ; *Conservation of Energy Resources/economics ; Electricity ; *Energy-Generating Resources/economics ; *Greenhouse Effect ; Methane/metabolism ; Time Factors ; Wood
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  • 39
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2001-03-10
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gillooly, D J -- Stenmark, H -- New York, N.Y. -- Science. 2001 Feb 9;291(5506):993-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry, Norwegian Radium Hospital, Montebello, N-0310 Oslo, Norway.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11232585" target="_blank"〉PubMed〈/a〉
    Keywords: Adaptor Proteins, Vesicular Transport ; Binding Sites ; Carrier Proteins/chemistry/*metabolism ; Cell Membrane/metabolism ; Clathrin/metabolism ; Coated Pits, Cell-Membrane/metabolism ; *Endocytosis ; Models, Biological ; Nerve Tissue Proteins/chemistry/*metabolism ; Neuropeptides/chemistry/*metabolism ; Phosphatidylinositol 4,5-Diphosphate/*metabolism ; Phosphoproteins/chemistry/*metabolism ; Protein Folding ; Protein Structure, Secondary ; Protein Structure, Tertiary ; *Vesicular Transport Proteins
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  • 40
    Publication Date: 2001-04-21
    Description: Structures of a 10-subunit yeast RNA polymerase II have been derived from two crystal forms at 2.8 and 3.1 angstrom resolution. Comparison of the structures reveals a division of the polymerase into four mobile modules, including a clamp, shown previously to swing over the active center. In the 2.8 angstrom structure, the clamp is in an open state, allowing entry of straight promoter DNA for the initiation of transcription. Three loops extending from the clamp may play roles in RNA unwinding and DNA rewinding during transcription. A 2.8 angstrom difference Fourier map reveals two metal ions at the active site, one persistently bound and the other possibly exchangeable during RNA synthesis. The results also provide evidence for RNA exit in the vicinity of the carboxyl-terminal repeat domain, coupling synthesis to RNA processing by enzymes bound to this domain.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cramer, P -- Bushnell, D A -- Kornberg, R D -- GM49985/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2001 Jun 8;292(5523):1863-76. Epub 2001 Apr 19.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Structural Biology, Stanford University School of Medicine, Stanford, CA 94305-5126, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11313498" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Binding Sites ; Conserved Sequence ; Crystallography, X-Ray ; DNA, Fungal/chemistry/metabolism ; Fourier Analysis ; Hydrogen Bonding ; Magnesium/metabolism ; Metals/metabolism ; Models, Molecular ; Molecular Sequence Data ; Promoter Regions, Genetic ; Protein Conformation ; Protein Structure, Quaternary ; Protein Structure, Secondary ; Protein Structure, Tertiary ; Protein Subunits ; RNA Polymerase II/*chemistry/*metabolism ; RNA Processing, Post-Transcriptional ; RNA, Fungal/biosynthesis/chemistry/metabolism ; RNA, Messenger/biosynthesis/chemistry/metabolism ; Saccharomyces cerevisiae/*enzymology/genetics ; Transcription Factors/metabolism ; *Transcription, Genetic
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  • 41
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2001-08-11
    Description: Chromatin, the physiological template of all eukaryotic genetic information, is subject to a diverse array of posttranslational modifications that largely impinge on histone amino termini, thereby regulating access to the underlying DNA. Distinct histone amino-terminal modifications can generate synergistic or antagonistic interaction affinities for chromatin-associated proteins, which in turn dictate dynamic transitions between transcriptionally active or transcriptionally silent chromatin states. The combinatorial nature of histone amino-terminal modifications thus reveals a "histone code" that considerably extends the information potential of the genetic code. We propose that this epigenetic marking system represents a fundamental regulatory mechanism that has an impact on most, if not all, chromatin-templated processes, with far-reaching consequences for cell fate decisions and both normal and pathological development.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Jenuwein, T -- Allis, C D -- GM53512/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2001 Aug 10;293(5532):1074-80.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Research Institute of Molecular Pathology (IMP) at the Vienna Biocenter, Dr. Bohrgasse 7, A-1030 Vienna, Austria. jenuwein@nt.imp.univie.ac.at〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11498575" target="_blank"〉PubMed〈/a〉
    Keywords: Acetylation ; Amino Acid Sequence ; Animals ; Chromatin/chemistry/metabolism/ultrastructure ; *Gene Expression Regulation ; *Gene Silencing ; Genomic Imprinting ; Histones/chemistry/genetics/*metabolism ; Methylation ; Molecular Sequence Data ; Phosphorylation ; Protein Structure, Tertiary ; Transcription, Genetic ; Transcriptional Activation
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  • 42
    Publication Date: 2001-11-10
    Description: We describe a molecular switch based on the controlled methylation of nucleosome and the transcriptional cofactors, the CREB-binding proteins (CBP)/p300. The CBP/p300 methylation site is localized to an arginine residue that is essential for stabilizing the structure of the KIX domain, which mediates CREB recruitment. Methylation of KIX by coactivator-associated arginine methyltransferase 1 (CARM1) blocks CREB activation by disabling the interaction between KIX and the kinase inducible domain (KID) of CREB. Thus, CARM1 functions as a corepressor in cyclic adenosine monophosphate signaling pathway via its methyltransferase activity while acting as a coactivator for nuclear hormones. These results provide strong in vivo and in vitro evidence that histone methylation plays a key role in hormone-induced gene activation and define cofactor methylation as a new regulatory mechanism in hormone signaling.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Xu, W -- Chen, H -- Du, K -- Asahara, H -- Tini, M -- Emerson, B M -- Montminy, M -- Evans, R M -- 9R01DK57978/DK/NIDDK NIH HHS/ -- New York, N.Y. -- Science. 2001 Dec 21;294(5551):2507-11. Epub 2001 Nov 8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Gene Expression Laboratory, Department of Biological Chemistry, University of California Davis Cancer Center/Basic Science, Sacramento, CA 95817, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11701890" target="_blank"〉PubMed〈/a〉
    Keywords: Acetyltransferases/metabolism ; Amino Acid Sequence ; Animals ; Apoptosis ; Cell Line ; Cyclic AMP Response Element-Binding Protein/metabolism ; Dimerization ; E1A-Associated p300 Protein ; *Gene Expression Regulation ; Genes, Reporter ; Histone Acetyltransferases ; Histones/metabolism ; Methylation ; Molecular Sequence Data ; Nerve Growth Factor/pharmacology ; Nuclear Proteins/chemistry/*metabolism ; PC12 Cells ; Protein Structure, Tertiary ; Protein-Arginine N-Methyltransferases/*metabolism ; Rats ; Receptors, Retinoic Acid/*metabolism ; Recombinant Fusion Proteins/metabolism ; Retinoid X Receptors ; *Saccharomyces cerevisiae Proteins ; Signal Transduction ; Somatostatin/genetics ; Trans-Activators/chemistry/*metabolism ; Transcription Factors/metabolism ; *Transcription, Genetic ; Transcriptional Activation ; Transfection ; Tretinoin/metabolism/pharmacology
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  • 43
    Publication Date: 2001-11-27
    Description: Adhesions between fibroblastic cells and extracellular matrix have been studied extensively in vitro, but little is known about their in vivo counterparts. Here, we characterized the composition and function of adhesions in three-dimensional (3D) matrices derived from tissues or cell culture. "3D-matrix adhesions" differ from focal and fibrillar adhesions characterized on 2D substrates in their content of alpha5beta1 and alphavbeta3 integrins, paxillin, other cytoskeletal components, and tyrosine phosphorylation of focal adhesion kinase (FAK). Relative to 2D substrates, 3D-matrix interactions also display enhanced cell biological activities and narrowed integrin usage. These distinctive in vivo 3D-matrix adhesions differ in structure, localization, and function from classically described in vitro adhesions, and as such they may be more biologically relevant to living organisms.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cukierman, E -- Pankov, R -- Stevens, D R -- Yamada, K M -- New York, N.Y. -- Science. 2001 Nov 23;294(5547):1708-12.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Craniofacial Developmental Biology and Regeneration Branch, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD 20892, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11721053" target="_blank"〉PubMed〈/a〉
    Keywords: 3T3 Cells ; Animals ; *Cell Adhesion/drug effects ; Cell Culture Techniques/methods ; Cell Division ; Cell Movement ; Cell Size ; Cells, Cultured ; Culture Techniques/methods ; Cycloheximide/pharmacology ; Cytoskeletal Proteins/metabolism ; Extracellular Matrix/chemistry/metabolism ; Fibroblasts/chemistry/*cytology/*metabolism ; Fibronectins/metabolism ; Fluorescent Antibody Technique, Indirect ; Focal Adhesion Kinase 1 ; Focal Adhesion Protein-Tyrosine Kinases ; Focal Adhesions/chemistry/metabolism ; Glutaral/metabolism ; Humans ; Imaging, Three-Dimensional/*methods ; Integrins/metabolism ; Mice ; Mitogen-Activated Protein Kinases/metabolism ; Molecular Conformation ; Phosphorylation ; Protein-Tyrosine Kinases/metabolism ; Time Factors
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  • 44
    Publication Date: 2001-04-17
    Description: In mammals, the central circadian pacemaker resides in the hypothalamic suprachiasmatic nucleus (SCN), but circadian oscillators also exist in peripheral tissues. Here, using wild-type and cryptochrome (mCry)-deficient cell lines derived from mCry mutant mice, we show that the peripheral oscillator in cultured fibroblasts is identical to the oscillator in the SCN in (i) temporal expression profiles of all known clock genes, (ii) the phase of the various mRNA rhythms (i.e., antiphase oscillation of Bmal1 and mPer genes), (iii) the delay between maximum mRNA levels and appearance of nuclear mPER1 and mPER2 protein, (iv) the inability to produce oscillations in the absence of functional mCry genes, and (v) the control of period length by mCRY proteins.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Yagita, K -- Tamanini, F -- van Der Horst, G T -- Okamura, H -- New York, N.Y. -- Science. 2001 Apr 13;292(5515):278-81.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Molecular Brain Science, Department of Brain Sciences, Kobe University Graduate School of Medicine, Chuo-ku, Kobe 650-0017, Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11303101" target="_blank"〉PubMed〈/a〉
    Keywords: ARNTL Transcription Factors ; Animals ; Basic Helix-Loop-Helix Transcription Factors ; Biological Clocks/*genetics ; CLOCK Proteins ; Cell Cycle Proteins ; Cell Line ; Cell Nucleus/metabolism ; Circadian Rhythm/*genetics ; Cryptochromes ; *DNA-Binding Proteins ; *Drosophila Proteins ; Endothelin-1/pharmacology ; *Eye Proteins ; Fibroblasts/*physiology ; Flavoproteins/genetics/metabolism ; Gene Expression Profiling ; *Gene Expression Regulation ; Nuclear Proteins/genetics/metabolism ; Period Circadian Proteins ; *Photoreceptor Cells, Invertebrate ; RNA, Messenger/genetics/metabolism ; Rats ; Receptors, G-Protein-Coupled ; Suprachiasmatic Nucleus/metabolism ; Time Factors ; Trans-Activators/genetics/metabolism ; Transcription Factors/genetics/metabolism
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  • 45
    Publication Date: 2001-03-17
    Description: Chloroplasts relocate their positions in a cell in response to the intensity of incident light, moving to the side wall of the cell to avoid strong light, but gathering at the front face under weak light to maximize light interception. Here, Arabidopsis thaliana mutants defective in the avoidance response were isolated, and the mutated gene was identified as NPL1 (NPH-like 1), a homolog of NPH1 (nonphototropic hypocotyl 1), a blue light receptor used in phototropism. Hence, NPL1 is likely a blue light receptor regulating the avoidance response under strong light.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kagawa, T -- Sakai, T -- Suetsugu, N -- Oikawa, K -- Ishiguro, S -- Kato, T -- Tabata, S -- Okada, K -- Wada, M -- New York, N.Y. -- Science. 2001 Mar 16;291(5511):2138-41.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉"Unit Process and Combined Circuit," PRESTO, Japan Science and Technology Corporation, 1-8, Honcho 4-chome, Kawaguchi-city, Saitama 332-0012, Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11251116" target="_blank"〉PubMed〈/a〉
    Keywords: Alleles ; Arabidopsis/genetics/*physiology/ultrastructure ; *Arabidopsis Proteins ; Cell Membrane/metabolism ; Chloroplasts/*physiology ; Genes, Plant ; *Light ; Movement ; Mutation ; Phosphoproteins/chemistry/physiology ; Phototropism ; Plant Leaves/metabolism ; Plant Proteins/chemistry/*genetics/*physiology ; Plant Structures/metabolism ; Protein Structure, Tertiary ; RNA, Messenger/genetics/metabolism ; RNA, Plant/genetics/metabolism
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  • 46
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2001-10-03
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Daniels, S R -- New York, N.Y. -- Science. 2001 Sep 28;293(5539):2392-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11579936" target="_blank"〉PubMed〈/a〉
    Keywords: Antihypertensive Agents/*therapeutic use ; *Controlled Clinical Trials as Topic ; Follow-Up Studies ; Humans ; Hypertension/*drug therapy ; Meta-Analysis as Topic ; *Placebos/adverse effects ; Time Factors
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  • 47
    Publication Date: 2001-06-26
    Description: Clinical studies with the Abl tyrosine kinase inhibitor STI-571 in chronic myeloid leukemia demonstrate that many patients with advanced stage disease respond initially but then relapse. Through biochemical and molecular analysis of clinical material, we find that drug resistance is associated with the reactivation of BCR-ABL signal transduction in all cases examined. In six of nine patients, resistance was associated with a single amino acid substitution in a threonine residue of the Abl kinase domain known to form a critical hydrogen bond with the drug. This substitution of threonine with isoleucine was sufficient to confer STI-571 resistance in a reconstitution experiment. In three patients, resistance was associated with progressive BCR-ABL gene amplification. These studies provide evidence that genetically complex cancers retain dependence on an initial oncogenic event and suggest a strategy for identifying inhibitors of STI-571 resistance.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gorre, M E -- Mohammed, M -- Ellwood, K -- Hsu, N -- Paquette, R -- Rao, P N -- Sawyers, C L -- GM07185/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2001 Aug 3;293(5531):876-80. Epub 2001 Jun 21.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Medicine, Molecular Biology Institute, University of California, Los Angeles, CA 90095, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11423618" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Amino Acid Substitution ; Antineoplastic Agents/metabolism/pharmacology/therapeutic use ; Base Sequence ; Benzamides ; Blast Crisis/genetics ; Cell Line ; Drug Resistance, Neoplasm/genetics ; Fusion Proteins, bcr-abl/*metabolism ; Gene Amplification ; *Genes, abl ; Humans ; Hydrogen Bonding ; Imatinib Mesylate ; Leukemia, Myelogenous, Chronic, BCR-ABL Positive/*drug therapy/*genetics ; Molecular Sequence Data ; Philadelphia Chromosome ; Phosphorylation ; Piperazines/metabolism/*pharmacology/therapeutic use ; Point Mutation ; Protein Structure, Tertiary ; Proto-Oncogene Proteins/metabolism ; Proto-Oncogene Proteins c-abl/antagonists & ; inhibitors/chemistry/*genetics/metabolism ; Proto-Oncogene Proteins c-crk ; Pyrimidines/metabolism/*pharmacology/therapeutic use ; Recurrence ; Signal Transduction
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  • 48
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2001-03-03
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bell, A C -- West, A G -- Felsenfeld, G -- New York, N.Y. -- Science. 2001 Jan 19;291(5503):447-50.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉National Institute of Diabetes and Digestive and Kidney Diseases, Bethesda, MD 20892-0540, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11228144" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Chromatin/chemistry/*genetics ; Drosophila/genetics ; Enhancer Elements, Genetic ; *Gene Expression Regulation ; Gene Silencing ; *Genome ; Genomic Imprinting ; Humans ; Models, Genetic ; Promoter Regions, Genetic ; Protein Structure, Tertiary ; *Regulatory Sequences, Nucleic Acid ; Saccharomyces cerevisiae/genetics ; Vertebrates/genetics
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  • 49
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2001-12-01
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Beckman, M -- New York, N.Y. -- Science. 2001 Nov 30;294(5548):1803.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11729272" target="_blank"〉PubMed〈/a〉
    Keywords: Cell Nucleus/*virology ; Cytoplasm/*virology ; Dependovirus/*physiology ; Fluorescence ; Genetic Vectors/physiology ; Host-Parasite Interactions/physiology ; Humans ; Microscopy, Fluorescence/methods ; Spectrometry, Fluorescence/*methods ; Time Factors
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  • 50
    Publication Date: 2001-06-09
    Description: The p53 protein is present in low amounts in normally growing cells and is activated in response to physiological insults. MDM2 regulates p53 either through inhibiting p53's transactivating function in the nucleus or by targeting p53 degradation in the cytoplasm. We identified a previously unknown nuclear export signal (NES) in the amino terminus of p53, spanning residues 11 to 27 and containing two serine residues phosphorylated after DNA damage, which was required for p53 nuclear export in colloboration with the carboxyl-terminal NES. Serine-15-phosphorylated p53 induced by ultraviolet irradiation was not exported. Thus, DNA damage-induced phosphorylation may achieve optimal p53 activation by inhibiting both MDM2 binding to, and the nuclear export of, p53.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zhang, Y -- Xiong, Y -- CA65572/CA/NCI NIH HHS/ -- K01 CA087580/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 2001 Jun 8;292(5523):1910-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Lineberger Comprehensive Cancer Center, Department of Biochemistry and Biophysics, and Program in Molecular Biology and Biotechnology, University of North Carolina at Chapel Hill, NC 27599-7295, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11397945" target="_blank"〉PubMed〈/a〉
    Keywords: Active Transport, Cell Nucleus ; Amino Acid Sequence ; Animals ; Cell Fusion ; Cell Line ; Cell Nucleus/*metabolism ; Cells, Cultured ; Cytoplasm/metabolism ; *DNA Damage ; Mice ; Molecular Sequence Data ; Mutation ; *Nuclear Proteins ; Phosphorylation ; Phosphoserine/metabolism ; *Protein Sorting Signals ; Protein Structure, Tertiary ; Proteins/genetics/metabolism ; Proto-Oncogene Proteins/metabolism ; Proto-Oncogene Proteins c-mdm2 ; Recombinant Fusion Proteins/metabolism ; Transfection ; Tumor Suppressor Protein p14ARF ; Tumor Suppressor Protein p53/*chemistry/genetics/*metabolism ; Ubiquitins/metabolism ; Ultraviolet Rays
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  • 51
    Publication Date: 2001-12-01
    Description: Heterotrimeric GTP-binding proteins (G proteins) control cellular functions by transducing signals from the outside to the inside of cells. Regulator of G protein signaling (RGS) proteins are key modulators of the amplitude and duration of G protein-mediated signaling through their ability to serve as guanosine triphosphatase-activating proteins (GAPs). We have identified RGS-PX1, a Galpha(s)-specific GAP. The RGS domain of RGS-PX1 specifically interacted with Galpha(s), accelerated its GTP hydrolysis, and attenuated Galpha(s)-mediated signaling. RGS-PX1 also contains a Phox (PX) domain that resembles those in sorting nexin (SNX) proteins. Expression of RGS-PX1 delayed lysosomal degradation of the EGF receptor. Because of its bifunctional role as both a GAP and a SNX, RGS-PX1 may link heterotrimeric G protein signaling and vesicular trafficking.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zheng, B -- Ma, Y C -- Ostrom, R S -- Lavoie, C -- Gill, G N -- Insel, P A -- Huang, X Y -- Farquhar, M G -- AG14563/AG/NIA NIH HHS/ -- CA58689/CA/NCI NIH HHS/ -- DK17780/DK/NIDDK NIH HHS/ -- GM56904/GM/NIGMS NIH HHS/ -- HL53773/HL/NHLBI NIH HHS/ -- HL63885/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 2001 Nov 30;294(5548):1939-42.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cellular and Molecular Medicine, University of California San Diego, La Jolla, CA 92093-0651, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11729322" target="_blank"〉PubMed〈/a〉
    Keywords: Adrenergic beta-2 Receptor Agonists ; Amino Acid Sequence ; Animals ; COS Cells ; Carrier Proteins/chemistry/*metabolism ; Cattle ; Cell Line ; Cyclic AMP/metabolism ; Endosomes/chemistry/metabolism ; GTP-Binding Protein alpha Subunits, Gs/antagonists & inhibitors/*metabolism ; GTPase-Activating Proteins/chemistry/*metabolism ; Guanosine Triphosphate/metabolism ; Humans ; Mitogen-Activated Protein Kinases/metabolism ; Molecular Sequence Data ; Protein Binding ; Protein Interaction Mapping ; Protein Structure, Tertiary ; Protein Transport ; RGS Proteins/chemistry/*metabolism ; Receptor, Epidermal Growth Factor/metabolism ; Receptors, Adrenergic, beta-2/genetics/metabolism ; Sequence Alignment ; Signal Transduction ; Sorting Nexins ; Substrate Specificity ; *Vesicular Transport Proteins
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  • 52
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2001-07-28
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kaiser, J -- New York, N.Y. -- Science. 2001 Jul 27;293(5530):624-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11474094" target="_blank"〉PubMed〈/a〉
    Keywords: Agriculture ; Animals ; Databases, Factual ; *Ecology ; *Ecosystem ; Government Agencies ; International Cooperation ; Internet ; Plants ; Research Support as Topic ; Software ; Time Factors ; Trees ; Weather
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  • 53
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2001-07-28
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉De La Cruz, E M -- Pollard, T D -- New York, N.Y. -- Science. 2001 Jul 27;293(5530):616-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Biophysics and Biochemistry, Yale University, New Haven, CT 06520, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11474090" target="_blank"〉PubMed〈/a〉
    Keywords: Actin Depolymerizing Factors ; Actins/*chemistry/*metabolism ; Adenosine Diphosphate/chemistry/*metabolism ; Adenosine Triphosphate/chemistry/metabolism ; Biopolymers/chemistry/metabolism ; *Contractile Proteins ; Crystallography, X-Ray ; Hydrolysis ; Microfilament Proteins/metabolism ; Phosphates/metabolism ; Profilins ; Protein Binding ; Protein Conformation ; Protein Structure, Secondary ; Protein Structure, Tertiary ; Protein Subunits ; Rhodamines/metabolism ; Thymosin/metabolism
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  • 54
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2001-12-18
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Berendsen, H J -- New York, N.Y. -- Science. 2001 Dec 14;294(5550):2304-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Groningen Biomolecular Sciences and Biotechnology Institute (GBB), University of Groningen, Nijenborgh 4, 9747 AG Groningen, Netherlands. berendsen@chem.rug.nl〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11743188" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Motifs ; Aquaporin 1 ; Aquaporins/chemistry/*metabolism ; Bacterial Outer Membrane Proteins/chemistry/*metabolism ; Cell Membrane Permeability ; *Computational Biology ; *Computer Simulation ; *Escherichia coli Proteins ; Hydrogen Bonding ; Kinetics ; Lipid Bilayers ; *Models, Biological ; Permeability ; Static Electricity ; Time Factors ; Water/*metabolism
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  • 55
    Publication Date: 2001-06-02
    Description: The GGAs are a multidomain protein family implicated in protein trafficking between the Golgi and endosomes. Here, the VHS domain of GGA2 was shown to bind to the acidic cluster-dileucine motif in the cytoplasmic tail of the cation-independent mannose 6-phosphate receptor (CI-MPR). Receptors with mutations in this motif were defective in lysosomal enzyme sorting. The hinge domain of GGA2 bound clathrin, suggesting that GGA2 could be a link between cargo molecules and clathrin-coated vesicle assembly. Thus, GGA2 binding to the CI-MPR is important for lysosomal enzyme targeting.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zhu, Y -- Doray, B -- Poussu, A -- Lehto, V P -- Kornfeld, S -- R01 CA-08759/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 2001 Jun 1;292(5522):1716-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Internal Medicine, Washington University School of Medicine, 660 South Euclid Avenue, St. Louis, MO 63110, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11387476" target="_blank"〉PubMed〈/a〉
    Keywords: Adaptor Proteins, Vesicular Transport ; Amino Acid Motifs ; Amino Acid Sequence ; Animals ; *Carrier Proteins ; Cations ; Clathrin/metabolism ; Dipeptides/chemistry/metabolism ; L Cells (Cell Line) ; Lysosomes/*enzymology ; Mice ; Molecular Sequence Data ; Mutation ; Protein Sorting Signals ; Protein Structure, Tertiary ; *Protein Transport ; Proteins/chemistry/genetics/*metabolism ; Rats ; Receptor, IGF Type 2/*chemistry/genetics/*metabolism ; Recombinant Fusion Proteins/chemistry/metabolism ; Solubility ; Transcription Factor AP-1/metabolism ; Transport Vesicles/metabolism ; Two-Hybrid System Techniques ; trans-Golgi Network/metabolism
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  • 56
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2001-06-16
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Thornton, J M -- New York, N.Y. -- Science. 2001 Jun 15;292(5524):2095-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉University College Department of Biochemistry and Molecular Biology, London WC1E 6BT, UK. thornton@biochem.ucl.ac.uk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11408660" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; *Computational Biology ; Computer Simulation ; Databases, Factual ; Evolution, Molecular ; Genome ; *Models, Molecular ; Peptide Library ; *Protein Conformation ; Protein Structure, Tertiary ; Proteins/*chemistry/*physiology ; Proteome ; Sequence Homology, Amino Acid
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  • 57
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2001-07-28
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kaiser, J -- New York, N.Y. -- Science. 2001 Jul 27;293(5530):626.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11474096" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Carbon Dioxide ; Disasters ; Ecology ; *Ecosystem ; Financing, Government ; Government Agencies ; Massachusetts ; Research Support as Topic ; Time Factors ; *Trees
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  • 58
    Publication Date: 2001-12-01
    Description: We describe a method, based on single-molecule imaging, that allows the real-time visualization of the infection pathway of single viruses in living cells, each labeled with only one fluorescent dye molecule. The tracking of single viruses removes ensemble averaging. Diffusion trajectories with high spatial and time resolution show various modes of motion of adeno-associated viruses (AAV) during their infection pathway into living HeLa cells: (i) consecutive virus touching at the cell surface and fast endocytosis; (ii) free and anomalous diffusion of the endosome and the virus in the cytoplasm and the nucleus; and (iii) directed motion by motor proteins in the cytoplasm and in nuclear tubular structures. The real-time visualization of the infection pathway of single AAVs shows a much faster infection than was generally observed so far.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Seisenberger, G -- Ried, M U -- Endress, T -- Buning, H -- Hallek, M -- Brauchle, C -- New York, N.Y. -- Science. 2001 Nov 30;294(5548):1929-32.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department Chemie, Ludwig-Maximilians-Universitat Munchen, Butenandtstrasse 11, D-81377 Munchen, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11729319" target="_blank"〉PubMed〈/a〉
    Keywords: Adsorption ; Biological Transport ; Cell Nucleus/*virology ; Cell Survival ; Cytoplasm/*virology ; Dependovirus/*physiology ; Diffusion ; Endocytosis ; Endosomes/virology ; Fluorescence ; Fluorescent Dyes/metabolism ; Genetic Vectors/physiology ; HeLa Cells ; Host-Parasite Interactions/physiology ; Humans ; Microscopy, Fluorescence/*methods ; Molecular Motor Proteins/metabolism ; Movement ; Nocodazole/pharmacology ; Spectrometry, Fluorescence/*methods ; Time Factors
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  • 59
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2001-05-16
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lawler, A -- New York, N.Y. -- Science. 2001 May 11;292(5519):1044-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11352044" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Computer Graphics ; *Computer Simulation ; Computers ; Fractals ; Image Processing, Computer-Assisted/*methods ; Internet ; Microscopy, Video ; Motion Pictures as Topic ; Publishing ; Reproducibility of Results ; Software ; Time Factors
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  • 60
    Publication Date: 2001-06-30
    Description: The pollen extracellular matrix contains proteins mediating species specificity and components needed for efficient pollination. We identified all proteins 〉10 kilodaltons in the Arabidopsis pollen coating and showed that most of the corresponding genes reside in two genomic clusters. One cluster encodes six lipases, whereas the other contains six lipid-binding oleosin genes, including GRP17, a gene that promotes efficient pollination. Individual oleosins exhibit extensive divergence between ecotypes, but the entire cluster remains intact. Analysis of the syntenic region in Brassica oleracea revealed even greater divergence, but a similar clustering of the genes. Such allelic flexibility may promote speciation in plants.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mayfield, J A -- Fiebig, A -- Johnstone, S E -- Preuss, D -- New York, N.Y. -- Science. 2001 Jun 29;292(5526):2482-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Genetics and Cell Biology, Howard Hughes Medical Institute, The University of Chicago, Chicago, IL 60637, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11431566" target="_blank"〉PubMed〈/a〉
    Keywords: Alleles ; Amino Acid Motifs ; Amino Acid Sequence ; Arabidopsis/chemistry/*genetics ; *Arabidopsis Proteins ; Brassica/chemistry/genetics ; Expressed Sequence Tags ; Genes, Plant ; Genetic Variation ; Genome, Plant ; Lipase/*chemistry/genetics ; Molecular Sequence Data ; *Multigene Family ; Phosphotransferases/chemistry/genetics ; Plant Proteins/*chemistry/genetics ; Pollen/*chemistry ; Protein Structure, Tertiary ; *Proteome ; Reverse Transcriptase Polymerase Chain Reaction ; Sequence Alignment
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 61
    Publication Date: 2001-12-01
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tynan, C T -- DeMaster, D P -- Peterson, W T -- New York, N.Y. -- Science. 2001 Nov 30;294(5548):1894.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Northwest Fisheries Science Center (NWFSC), National Oceanic and Atmospheric Administration (NOAA), Seattle, WA 98112, USA. Cynthia.Tynan@noaa.gov〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11729308" target="_blank"〉PubMed〈/a〉
    Keywords: Animal Migration ; Animals ; *Ecosystem ; *Environment ; Food Chain ; *Geography ; Pacific Ocean ; Seawater ; Survival Rate ; Temperature ; Time Factors ; Whales/*physiology
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  • 62
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2001-07-28
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pickrell, J -- New York, N.Y. -- Science. 2001 Jul 27;293(5530):625.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11474095" target="_blank"〉PubMed〈/a〉
    Keywords: Ecology ; *Ecosystem ; England ; *Fertilizers ; Poaceae/*growth & development ; Time Factors
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  • 63
    Publication Date: 2001-09-08
    Description: Bcl-2 family members bearing only the BH3 domain are essential inducers of apoptosis. We identified a BH3-only protein, Bmf, and show that its BH3 domain is required both for binding to prosurvival Bcl-2 proteins and for triggering apoptosis. In healthy cells, Bmf is sequestered to myosin V motors by association with dynein light chain 2. Certain damage signals, such as loss of cell attachment (anoikis), unleash Bmf, allowing it to translocate and bind prosurvival Bcl-2 proteins. Thus, at least two mammalian BH3-only proteins, Bmf and Bim, function to sense intracellular damage by their localization to distinct cytoskeletal structures.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Puthalakath, H -- Villunger, A -- O'Reilly, L A -- Beaumont, J G -- Coultas, L -- Cheney, R E -- Huang, D C -- Strasser, A -- CA 80188/CA/NCI NIH HHS/ -- R29 DC003299/DC/NIDCD NIH HHS/ -- New York, N.Y. -- Science. 2001 Sep 7;293(5536):1829-32.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉The Walter and Eliza Hall Institute of Medical Research, Melbourne, P.O. Royal Melbourne Hospital, 3050 VIC, Australia.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11546872" target="_blank"〉PubMed〈/a〉
    Keywords: *Adaptor Proteins, Signal Transducing ; Amino Acid Sequence ; Animals ; *Anoikis ; Apoptosis Regulatory Proteins ; Calmodulin-Binding Proteins/*metabolism ; Carrier Proteins/*chemistry/genetics/*metabolism ; Cell Line ; Cytoskeleton/metabolism ; *Drosophila Proteins ; Dyneins ; Gene Expression Profiling ; Humans ; *Membrane Proteins ; Mice ; Molecular Motor Proteins/*metabolism ; Molecular Sequence Data ; Mutation ; Myeloid Cell Leukemia Sequence 1 Protein ; *Myosin Type V ; Neoplasm Proteins/genetics/metabolism ; Nerve Tissue Proteins/*metabolism ; Protein Binding ; Protein Structure, Tertiary ; Protein Transport ; *Proto-Oncogene Proteins ; Proto-Oncogene Proteins c-bcl-2/chemistry/genetics/metabolism ; RNA, Messenger/analysis/genetics ; Transfection ; Two-Hybrid System Techniques
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  • 64
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2001-03-14
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Brown, K -- New York, N.Y. -- Science. 2001 Mar 9;291(5510):1884-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11245184" target="_blank"〉PubMed〈/a〉
    Keywords: Angiosperms/growth & development/*physiology ; Ecosystem ; Seasons ; Seeds/growth & development/*physiology ; Time Factors
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  • 65
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2001-03-17
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Simkin, T -- Siebert, L -- Blong, R -- New York, N.Y. -- Science. 2001 Jan 12;291(5502):255.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉National Museum of Natural History, Smithsonian Institution, Washington, DC 20560-0119, USA. simkin@nmnh.si.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11253213" target="_blank"〉PubMed〈/a〉
    Keywords: Humans ; *Mortality ; Time Factors ; Volcanic Eruptions/*statistics & numerical data
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  • 66
    Publication Date: 2001-05-12
    Description: Epigenetic silenced alleles of the Arabidopsis SUPERMAN locus (the clark kent alleles) are associated with dense hypermethylation at noncanonical cytosines (CpXpG and asymmetric sites, where X = A, T, C, or G). A genetic screen for suppressors of a hypermethylated clark kent mutant identified nine loss-of-function alleles of CHROMOMETHYLASE3 (CMT3), a novel cytosine methyltransferase homolog. These cmt3 mutants display a wild-type morphology but exhibit decreased CpXpG methylation of the SUP gene and of other sequences throughout the genome. They also show reactivated expression of endogenous retrotransposon sequences. These results show that a non-CpG DNA methyltransferase is responsible for maintaining epigenetic gene silencing.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lindroth, A M -- Cao, X -- Jackson, J P -- Zilberman, D -- McCallum, C M -- Henikoff, S -- Jacobsen, S E -- GM07104/GM/NIGMS NIH HHS/ -- GM07185/GM/NIGMS NIH HHS/ -- GM29009/GM/NIGMS NIH HHS/ -- GM60398/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2001 Jun 15;292(5524):2077-80. Epub 2001 May 10.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular, Cell and Developmental Biology, University of California, Los Angeles, CA 90095, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11349138" target="_blank"〉PubMed〈/a〉
    Keywords: Alleles ; Amino Acid Sequence ; Arabidopsis/*genetics/metabolism ; *Arabidopsis Proteins ; Base Sequence ; Chromosome Mapping ; Cloning, Molecular ; CpG Islands ; Crosses, Genetic ; Cytosine/metabolism ; *DNA Methylation ; DNA-Cytosine Methylases/chemistry/*genetics/*metabolism ; Dinucleoside Phosphates/metabolism ; Gene Expression Regulation, Plant ; *Gene Silencing ; Genes, Plant ; Molecular Sequence Data ; Mutagenesis ; Oligonucleotides/*metabolism ; Phenotype ; Protein Structure, Tertiary ; Retroelements ; Transcription Factors/*genetics
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  • 67
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2001-12-01
    Description: There seem to be numerous pathways for exporting mRNAs from the nucleus to the cytoplasm. But working out which set of export adaptors and receptors transport individual mRNAs has been very difficult. In a Perspective, Moore and Rosbash discuss a new strategy using cell-penetrating peptide inhibitors for unraveling the routes of mRNA export in living cells (Gallouzi and Steitz).〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Moore, M J -- Rosbash, M -- New York, N.Y. -- Science. 2001 Nov 30;294(5548):1841-2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry, Howard Hughes Medical Institute, Brandeis University, Waltham, MA 02454, USA. mmoore@brandeis.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11729289" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antennapedia Homeodomain Protein ; *Antigens, Surface ; Biological Transport/drug effects ; Cell Membrane Permeability ; Cell Nucleus/drug effects/*metabolism ; Cytoplasm/drug effects/*metabolism ; ELAV Proteins ; ELAV-Like Protein 1 ; Fatty Acids, Unsaturated/metabolism/pharmacology ; Gene Products, rev/chemistry/metabolism ; HIV/genetics ; Homeodomain Proteins/chemistry/metabolism ; Humans ; Karyopherins/*metabolism ; Neuropeptides/metabolism ; Nuclear Proteins/metabolism ; *Nucleocytoplasmic Transport Proteins ; Peptide Fragments/chemistry/metabolism/pharmacology ; Protein Binding/drug effects ; Protein Structure, Tertiary ; RNA, Messenger/genetics/*metabolism ; RNA-Binding Proteins/antagonists & inhibitors/chemistry/*metabolism ; *Receptors, Cytoplasmic and Nuclear ; Saccharomyces cerevisiae Proteins/metabolism ; *Transcription Factors ; rev Gene Products, Human Immunodeficiency Virus
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  • 68
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2001-09-08
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Higgins, C F -- Linton, K J -- New York, N.Y. -- Science. 2001 Sep 7;293(5536):1782-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉MRC Clinical Sciences Centre, Imperial College School of Medicine, Hammersmith Hospital Campus, DuCane Road, London W12 0NN, UK. christopher.higgins@csc.mrc.ac.uk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11546861" target="_blank"〉PubMed〈/a〉
    Keywords: ATP-Binding Cassette Transporters/*chemistry/metabolism ; Adenosine Triphosphate/metabolism ; Bacterial Proteins/*chemistry/metabolism ; Cell Membrane/metabolism ; Crystallization ; Crystallography, X-Ray/methods ; Dimerization ; Escherichia coli/*chemistry ; Membrane Proteins/*chemistry/metabolism ; Models, Biological ; P-Glycoprotein/chemistry/metabolism ; Protein Structure, Secondary ; Protein Structure, Tertiary
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  • 69
    Publication Date: 2001-06-26
    Description: The location and mechanisms responsible for the carbon sink in northern mid-latitude lands are uncertain. Here, we used an improved estimation method of forest biomass and a 50-year national forest resource inventory in China to estimate changes in the storage of living biomass between 1949 and 1998. Our results suggest that Chinese forests released about 0.68 petagram of carbon between 1949 and 1980, for an annual emission rate of 0.022 petagram of carbon. Carbon storage increased significantly after the late 1970s from 4.38 to 4.75 petagram of carbon by 1998, for a mean accumulation rate of 0.021 petagram of carbon per year, mainly due to forest expansion and regrowth. Since the mid-1970s, planted forests (afforestation and reforestation) have sequestered 0.45 petagram of carbon, and their average carbon density increased from 15.3 to 31.1 megagrams per hectare, while natural forests have lost an additional 0.14 petagram of carbon, suggesting that carbon sequestration through forest management practices addressed in the Kyoto Protocol could help offset industrial carbon dioxide emissions.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fang, J -- Chen, A -- Peng, C -- Zhao, S -- Ci, L -- New York, N.Y. -- Science. 2001 Jun 22;292(5525):2320-2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Urban and Environmental Science, and Key Laboratory for Earth Surface Processes of the Ministry of Education, Peking University, Beijing 100871, China. jyfang@urban.pku.edu.cn〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11423660" target="_blank"〉PubMed〈/a〉
    Keywords: *Biomass ; *Carbon ; Carbon Dioxide ; China ; Conservation of Natural Resources ; Forestry ; Time Factors ; *Trees
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  • 70
    Publication Date: 2001-03-27
    Description: Protein actions are usually discussed in terms of static structures, but function requires motion. We find a strong correlation between phosphorylation-driven activation of the signaling protein NtrC and microsecond time-scale backbone dynamics. Using nuclear magnetic resonance relaxation, we characterized the motions of NtrC in three functional states: unphosphorylated (inactive), phosphorylated (active), and a partially active mutant. These dynamics are indicative of exchange between inactive and active conformations. Both states are populated in unphosphorylated NtrC, and phosphorylation shifts the equilibrium toward the active species. These results support a dynamic population shift between two preexisting conformations as the underlying mechanism of activation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Volkman, B F -- Lipson, D -- Wemmer, D E -- Kern, D -- GM62117/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2001 Mar 23;291(5512):2429-33.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉National Magnetic Resonance Facility at Madison (NMRFAM), Department of Biochemistry, University of Wisconsin-Madison, Madison, WI 53706, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11264542" target="_blank"〉PubMed〈/a〉
    Keywords: Allosteric Regulation ; *Bacterial Proteins ; Binding Sites ; DNA-Binding Proteins/*chemistry/genetics/*metabolism ; Models, Molecular ; Motion ; Mutation ; Nuclear Magnetic Resonance, Biomolecular ; PII Nitrogen Regulatory Proteins ; Phosphorylation ; *Protein Conformation ; Protein Structure, Secondary ; Protein Structure, Tertiary ; Signal Transduction ; Time ; *Trans-Activators ; *Transcription Factors
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  • 71
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2001-12-01
    Description: Understanding how biochemical pathways are connected in the cell is one of the big challenges facing cell biologists. In a Perspective, von Zastrow and Mostov describe new work that identifies a protein called RGS-PX1 as the linchpin that connects signal transduction activated by G protein-coupled receptors with membrane trafficking events.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉von Zastrow, M -- Mostov, K -- New York, N.Y. -- Science. 2001 Nov 30;294(5548):1845-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Departments of Psychiatry, University of California, San Francisco, CA 94143, USA. zastrow@itsa.ucsf.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11729293" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Arrestins/metabolism ; Carrier Proteins/chemistry/*metabolism ; Databases, Genetic ; GTPase-Activating Proteins/chemistry/*metabolism ; Heterotrimeric GTP-Binding Proteins/chemistry/*metabolism ; Humans ; Protein Binding ; Protein Structure, Tertiary ; Protein Transport ; RGS Proteins/chemistry/*metabolism ; Receptor, Epidermal Growth Factor/metabolism ; Signal Transduction ; Sorting Nexins
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  • 72
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2001-11-10
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Smith, O -- New York, N.Y. -- Science. 2001 Nov 9;294(5545):1298.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11701920" target="_blank"〉PubMed〈/a〉
    Keywords: *Antigens, Bacterial ; *Bacillus anthracis ; Bacterial Toxins/chemistry/*metabolism ; Crystallography, X-Ray ; Endocytosis ; Hydrogen-Ion Concentration ; Macrophages/metabolism/microbiology ; Mitogen-Activated Protein Kinase Kinases/metabolism ; Phagocytosis ; Protein Conformation ; Protein Structure, Tertiary ; Receptors, Cell Surface/chemistry/*metabolism ; Receptors, Peptide/chemistry/*metabolism
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  • 73
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2001-11-27
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ferber, D -- New York, N.Y. -- Science. 2001 Nov 23;294(5547):1638-42.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11721029" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Biolistics ; Blood Pressure ; Clinical Trials as Topic ; Coronary Artery Disease/genetics/therapy ; DNA/administration & dosage/genetics ; Electroporation ; Gene Expression ; Gene Transfer Techniques/*trends ; Genetic Therapy/*methods/trends ; Genetic Vectors/*administration & dosage/*adverse effects/genetics ; Hemophilia A/genetics/therapy ; Humans ; Injections, Intra-Arterial ; Melanoma/genetics/therapy ; Microinjections ; Muscular Dystrophies/genetics/therapy ; Organ Specificity ; Plasmids/administration & dosage/genetics ; RNA/administration & dosage/genetics ; Time Factors ; Transfection ; Transgenes/genetics ; Viruses/genetics/pathogenicity
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  • 74
    Publication Date: 2001-05-19
    Description: Mannose 6-phosphate receptors (MPRs) deliver lysosomal hydrolases from the Golgi to endosomes and then return to the Golgi complex. TIP47 recognizes the cytoplasmic domains of MPRs and is required for endosome-to-Golgi transport. Here we show that TIP47 also bound directly to the Rab9 guanosine triphosphatase (GTPase) in its active, GTP-bound conformation. Moreover, Rab9 increased the affinity of TIP47 for its cargo. A functional Rab9 binding site was required for TIP47 stimulation of MPR transport in vivo. Thus, a cytosolic cargo selection device may be selectively recruited onto a specific organelle, and vesicle budding might be coupled to the presence of an active Rab GTPase.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Carroll, K S -- Hanna, J -- Simon, I -- Krise, J -- Barbero, P -- Pfeffer, S R -- DK37332/DK/NIDDK NIH HHS/ -- New York, N.Y. -- Science. 2001 May 18;292(5520):1373-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry, Stanford University School of Medicine, Stanford, CA 94305-5307, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11359012" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Substitution/genetics ; Animals ; Binding Sites ; Cattle ; Cytoplasm/metabolism ; DNA-Binding Proteins/*metabolism ; Endosomes/metabolism ; Golgi Apparatus/metabolism ; Guanosine 5'-O-(3-Thiotriphosphate)/metabolism ; *Intracellular Signaling Peptides and Proteins ; *Pregnancy Proteins ; Protein Binding ; Protein Structure, Tertiary ; Protein Transport ; Receptor, IGF Type 2/chemistry/*metabolism ; Recombinant Fusion Proteins/metabolism ; Substrate Specificity ; Vesicular Transport Proteins ; rab GTP-Binding Proteins/genetics/*metabolism
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  • 75
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2001-12-01
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Adkins, J -- New York, N.Y. -- Science. 2001 Nov 30;294(5548):1844-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉California Institute of Technology, Pasadena, CA 91125, USA. jess@gps.caltech.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11729292" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Atlantic Ocean ; *Atmosphere ; Calibration ; Carbon/metabolism ; Carbon Dioxide/metabolism ; Carbon Radioisotopes/metabolism ; Cold Climate ; Cosmic Radiation ; Geologic Sediments/*analysis/chemistry/parasitology ; Greenland ; Half-Life ; Ice ; Plankton/metabolism ; *Seawater ; Temperature ; Time Factors ; Volcanic Eruptions
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  • 76
    Publication Date: 2001-10-27
    Description: ErbB-4 is a transmembrane receptor tyrosine kinase that regulates cell proliferation and differentiation. After binding of its ligand heregulin (HRG) or activation of protein kinase C (PKC) by 12-O-tetradecanoylphorbol-13-acetate (TPA), the ErbB-4 ectodomain is cleaved by a metalloprotease. We now report a subsequent cleavage by gamma-secretase that releases the ErbB-4 intracellular domain from the membrane and facilitates its translocation to the nucleus. gamma-Secretase cleavage was prevented by chemical inhibitors or a dominant negative presenilin. Inhibition of gamma-secretase also prevented growth inhibition by HRG. gamma-Secretase cleavage of ErbB-4 may represent another mechanism for receptor tyrosine kinase-mediated signaling.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ni, C Y -- Murphy, M P -- Golde, T E -- Carpenter, G -- CA24071/CA/NCI NIH HHS/ -- CA68485/CA/NCI NIH HHS/ -- DK20593/DK/NIDDK NIH HHS/ -- NS39072/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 2001 Dec 7;294(5549):2179-81. Epub 2001 Oct 25.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry, Vanderbilt University School of Medicine, Nashville, TN 37232, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11679632" target="_blank"〉PubMed〈/a〉
    Keywords: Active Transport, Cell Nucleus ; Amino Acid Sequence ; Amyloid Precursor Protein Secretases ; Animals ; Aspartic Acid Endopeptidases ; COS Cells ; Carbamates/pharmacology ; Cell Division/drug effects ; Cell Line ; Cell Membrane/metabolism ; Cell Nucleus/*metabolism ; Cytoplasm/metabolism ; Dipeptides/pharmacology ; Endopeptidases/*metabolism ; Fatty Acids, Unsaturated/pharmacology ; Humans ; Membrane Proteins/genetics/metabolism ; Metalloendopeptidases/metabolism ; Mice ; Molecular Sequence Data ; Mutation ; Neuregulin-1/pharmacology ; Presenilin-1 ; Protease Inhibitors/pharmacology ; Protein Structure, Tertiary ; Receptor, Epidermal Growth Factor/chemistry/*metabolism ; Receptor, ErbB-4 ; Recombinant Fusion Proteins/metabolism ; Signal Transduction ; Tetradecanoylphorbol Acetate/pharmacology ; Transcriptional Activation ; Tumor Cells, Cultured
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  • 77
    Publication Date: 2001-02-27
    Description: Bag (Bcl2-associated athanogene) domains occur in a class of cofactors of the eukaryotic chaperone 70-kilodalton heat shock protein (Hsp70) family. Binding of the Bag domain to the Hsp70 adenosine triphosphatase (ATPase) domain promotes adenosine 5'-triphosphate-dependent release of substrate from Hsp70 in vitro. In a 1.9 angstrom crystal structure of a complex with the ATPase of the 70-kilodalton heat shock cognate protein (Hsc70), the Bag domain forms a three-helix bundle, inducing a conformational switch in the ATPase that is incompatible with nucleotide binding. The same switch is observed in the bacterial Hsp70 homolog DnaK upon binding of the structurally unrelated nucleotide exchange factor GrpE. Thus, functional convergence has allowed proteins with different architectures to trigger a conserved conformational shift in Hsp70 that leads to nucleotide exchange.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sondermann, H -- Scheufler, C -- Schneider, C -- Hohfeld, J -- Hartl, F U -- Moarefi, I -- New York, N.Y. -- Science. 2001 Feb 23;291(5508):1553-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cellular Biochemistry, Max-Planck-Institut fur Biochemie, D-82152 Martinsried, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11222862" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine Diphosphate/metabolism ; Adenosine Triphosphatases/*chemistry/*metabolism ; Adenosine Triphosphate/metabolism ; Amino Acid Sequence ; Animals ; Bacterial Proteins/chemistry/metabolism ; Carrier Proteins/*chemistry/*metabolism ; Cattle ; Crystallography, X-Ray ; DNA-Binding Proteins ; *Escherichia coli Proteins ; Evolution, Molecular ; HSC70 Heat-Shock Proteins ; HSP70 Heat-Shock Proteins/*chemistry/*metabolism ; Heat-Shock Proteins/chemistry/metabolism ; Humans ; Hydrolysis ; Models, Molecular ; Molecular Sequence Data ; Protein Conformation ; Protein Isoforms ; Protein Structure, Secondary ; Protein Structure, Tertiary ; Transcription Factors
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  • 78
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2001-06-09
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Klug, A -- New York, N.Y. -- Science. 2001 Jun 8;292(5523):1844-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉MRC Laboratory of Molecular Biology, Cambridge CB2 2QH, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11397933" target="_blank"〉PubMed〈/a〉
    Keywords: Binding Sites ; Crystallization ; Crystallography, X-Ray ; DNA, Fungal/chemistry/metabolism ; Gene Expression Regulation, Fungal ; Promoter Regions, Genetic ; Protein Conformation ; Protein Folding ; Protein Structure, Quaternary ; Protein Structure, Secondary ; Protein Structure, Tertiary ; Protein Subunits ; RNA Polymerase II/*chemistry/*metabolism ; RNA, Fungal/biosynthesis/chemistry/metabolism ; RNA, Messenger/biosynthesis/chemistry/metabolism ; Saccharomyces cerevisiae/*enzymology/genetics ; Transcription Factors/isolation & purification/metabolism ; *Transcription, Genetic
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  • 79
    Publication Date: 2001-12-01
    Description: Marine reserves have been widely promoted as conservation and fishery management tools. There are robust demonstrations of conservation benefits, but fishery benefits remain controversial. We show that marine reserves in Florida (United States) and St. Lucia have enhanced adjacent fisheries. Within 5 years of creation, a network of five small reserves in St. Lucia increased adjacent catches of artisanal fishers by between 46 and 90%, depending on the type of gear the fishers used. In Florida, reserve zones in the Merritt Island National Wildlife Refuge have supplied increasing numbers of world record-sized fish to adjacent recreational fisheries since the 1970s. Our study confirms theoretical predictions that marine reserves can play a key role in supporting fisheries.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Roberts, C M -- Bohnsack, J A -- Gell, F -- Hawkins, J P -- Goodridge, R -- New York, N.Y. -- Science. 2001 Nov 30;294(5548):1920-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Organismic and Evolutionary Biology, Harvard University, 16 Divinity Avenue, Cambridge, MA 02138, USA. cr10@york.ac.uk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11729316" target="_blank"〉PubMed〈/a〉
    Keywords: Adolescent ; Adult ; Aged ; Aged, 80 and over ; Animals ; Biomass ; Cnidaria/physiology ; Conservation of Natural Resources/*methods ; *Ecosystem ; Fisheries/*methods/statistics & numerical data ; *Fishes/physiology ; Florida ; Humans ; Middle Aged ; Saint Lucia ; Time Factors
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  • 80
    Publication Date: 2001-04-17
    Description: We present an analysis of the current foot-and-mouth disease epidemic in Great Britain over the first 2 months of the spread of the virus. The net transmission potential of the pathogen and the increasing impact of control measures are estimated over the course of the epidemic to date. These results are used to parameterize a mathematical model of disease transmission that captures the differing spatial contact patterns between farms before and after the imposition of movement restrictions. The model is used to make predictions of future incidence and to simulate the impact of additional control strategies. Hastening the slaughter of animals with suspected infection is predicted to slow the epidemic, but more drastic action, such as "ring" culling or vaccination around infection foci, is necessary for more rapid control. Culling is predicted to be more effective than vaccination.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ferguson, N M -- Donnelly, C A -- Anderson, R M -- New York, N.Y. -- Science. 2001 May 11;292(5519):1155-60. Epub 2001 Apr 12.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Infectious Disease Epidemiology, Imperial College School of Medicine, St. Mary's Campus, Norfolk Place, London W2 1PG, UK. Neil.Ferguson@ic.ac.uk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11303090" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Animals, Domestic/virology ; Aphthovirus/physiology ; Cattle ; Commerce ; Disease Reservoirs ; Foot-and-Mouth Disease/economics/epidemiology/*prevention & control/*transmission ; Great Britain/epidemiology ; Incidence ; Models, Biological ; Quarantine ; Sheep/virology ; Swine/virology ; Time Factors ; Vaccination/economics
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  • 81
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2001-12-18
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Catterall, W A -- New York, N.Y. -- Science. 2001 Dec 14;294(5550):2306-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pharmacology, University of Washington, Seattle, WA 98195, USA. wcatt@u.washington.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11743190" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Motifs ; Amino Acid Sequence ; Bacillus/*chemistry/metabolism ; Bacterial Proteins/antagonists & inhibitors/chemistry/*metabolism ; Calcium Channels/chemistry/metabolism ; Ion Channel Gating ; Ion Transport ; Membrane Potentials ; Potassium Channel Blockers ; Potassium Channels/chemistry/metabolism ; Protein Conformation ; Protein Structure, Secondary ; Protein Structure, Tertiary ; Sodium/*metabolism ; Sodium Channel Blockers ; Sodium Channels/*chemistry/*metabolism ; Static Electricity
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  • 82
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2001-11-17
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fesik, S W -- Shi, Y -- New York, N.Y. -- Science. 2001 Nov 16;294(5546):1477-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Cancer Research, Global Pharmaceutical Research & Development, Abbott Laboratories, Abbott Park, IL 60064, USA. stephen.fesik@abbott.com〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11711663" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Motifs ; Animals ; *Apoptosis ; Binding Sites ; Carrier Proteins/*chemistry/*metabolism ; *Caspase Inhibitors ; Caspases/chemistry/*metabolism ; Crystallography, X-Ray ; Cysteine Proteinase Inhibitors/chemistry/metabolism ; Dimerization ; Humans ; Hydrogen Bonding ; Intracellular Signaling Peptides and Proteins ; Mitochondria/metabolism ; Mitochondrial Proteins/*chemistry/*metabolism ; Protein Structure, Secondary ; Protein Structure, Tertiary ; Proteins/*chemistry/*metabolism ; X-Linked Inhibitor of Apoptosis Protein
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  • 83
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2001-12-26
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Nishioka, K -- Reinberg, D -- New York, N.Y. -- Science. 2001 Dec 21;294(5551):2497-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, Department of Biochemistry, Robert Wood Johnson Medical School, Piscataway, NJ 08854, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11752565" target="_blank"〉PubMed〈/a〉
    Keywords: Acetyltransferases/metabolism ; *Gene Expression Regulation ; Histone Acetyltransferases ; Methylation ; Nuclear Proteins/*metabolism ; Phosphorylation ; Promoter Regions, Genetic ; Protein Structure, Tertiary ; Protein-Arginine N-Methyltransferases/*metabolism ; Receptors, Cytoplasmic and Nuclear/metabolism ; *Saccharomyces cerevisiae Proteins ; Signal Transduction ; Trans-Activators/*metabolism ; Transcription Factors/metabolism ; *Transcription, Genetic
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  • 84
    Publication Date: 2001-08-04
    Description: One of the most dominant influences in the patterning of multicellular embryos is exerted by the Hedgehog (Hh) family of secreted signaling proteins. Here, we identify a segment polarity gene in Drosophila melanogaster, skinny hedgehog (ski), and show that its product is required in Hh-expressing cells for production of appropriate signaling activity in embryos and in the imaginal precursors of adult tissues. The ski gene encodes an apparent acyltransferase, and we provide genetic and biochemical evidence that Hh proteins from ski mutant cells retain carboxyl-terminal cholesterol modification but lack amino-terminal palmitate modification. Our results suggest that ski encodes an enzyme that acts within the secretory pathway to catalyze amino-terminal palmitoylation of Hh, and further demonstrate that this lipid modification is required for the embryonic and larval patterning activities of the Hh signal.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chamoun, Z -- Mann, R K -- Nellen, D -- von Kessler, D P -- Bellotto, M -- Beachy, P A -- Basler, K -- New York, N.Y. -- Science. 2001 Sep 14;293(5537):2080-4. Epub 2001 Aug 2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institut fur Molekularbiologie and Zoologisches Institut, Universitat Zurich, Winterthurerstrasse 190, 8057 Zurich, Switzerland.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11486055" target="_blank"〉PubMed〈/a〉
    Keywords: Acylation ; Acyltransferases/chemistry/*genetics/*metabolism ; Amino Acid Sequence ; Amino Acid Substitution ; Animals ; Body Patterning ; Cholesterol/metabolism ; *Drosophila Proteins ; Drosophila melanogaster/embryology/*genetics/growth & development/metabolism ; Gene Expression ; Genes, Insect ; Hedgehog Proteins ; Insect Proteins/chemistry/genetics/*metabolism ; Molecular Sequence Data ; Mutation ; Palmitic Acid/*metabolism ; Protein Structure, Tertiary ; *Signal Transduction ; Transgenes
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  • 85
    Publication Date: 2001-06-16
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Al-Khatib, S M -- Califf, R M -- Hasselblad, V -- Alexander, J H -- McCrory, D C -- Sugarman, J -- New York, N.Y. -- Science. 2001 Jun 15;292(5524):2013-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Medicine, Duke Clinical Research Institute, Durham, NC 27710, USA. alkha001@mc.duke.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11408643" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Antihypertensive Agents/*therapeutic use ; Bayes Theorem ; *Control Groups ; Ethics, Medical ; Humans ; Hypertension/*drug therapy ; Patient Selection ; *Placebos/adverse effects ; *Randomized Controlled Trials as Topic ; Risk Factors ; Time Factors
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  • 86
    Publication Date: 2001-11-27
    Description: We determined a crystal structure of bovine Arp2/3 complex, an assembly of seven proteins that initiates actin polymerization in eukaryotic cells, at 2.0 angstrom resolution. Actin-related protein 2 (Arp2) and Arp3 are folded like actin, with distinctive surface features. Subunits ARPC2 p34 and ARPC4 p20 in the core of the complex associate through long carboxyl-terminal alpha helices and have similarly folded amino-terminal alpha/beta domains. ARPC1 p40 is a seven-blade beta propeller with an insertion that may associate with the side of an actin filament. ARPC3 p21 and ARPC5 p16 are globular alpha-helical subunits. We predict that WASp/Scar proteins activate Arp2/3 complex by bringing Arp2 into proximity with Arp3 for nucleation of a branch on the side of a preexisting actin filament.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Robinson, R C -- Turbedsky, K -- Kaiser, D A -- Marchand, J B -- Higgs, H N -- Choe, S -- Pollard, T D -- GM-26132/GM/NIGMS NIH HHS/ -- GM-26338/GM/NIGMS NIH HHS/ -- GM-56653/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2001 Nov 23;294(5547):1679-84.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Structural Biology Laboratory, Salk Institute for Biological Studies, 10010 North Torrey Pines Road, La Jolla, CA 92037, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11721045" target="_blank"〉PubMed〈/a〉
    Keywords: Actin Cytoskeleton/*chemistry/*metabolism ; Actin-Related Protein 2 ; Actin-Related Protein 3 ; Actins/*chemistry/*metabolism ; Adenosine Triphosphate/metabolism ; Animals ; Cattle ; Crystallography, X-Ray ; *Cytoskeletal Proteins ; Macromolecular Substances ; Models, Biological ; Models, Molecular ; Muscle, Skeletal ; Protein Structure, Quaternary ; Protein Structure, Secondary ; Protein Structure, Tertiary ; Protein Subunits ; Static Electricity ; Thymus Gland
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  • 87
    Publication Date: 2001-08-18
    Description: Arabidopsis seedling photomorphogenesis involves two antagonistically acting components, COP1 and HY5. COP1 specifically targets HY5 for degradation via the 26S proteasome in the dark through their direct physical interaction. Little is known regarding how light signals perceived by photoreceptors are transduced to regulate COP1. Arabidopsis has two related cryptochromes (cry1 and cry2) mediating various blue/ultraviolet-A light responses. Here we show that both photoactivated cryptochromes repress COP1 activity through a direct protein-protein contact and that this direct regulation is primarily responsible for the cryptochrome-mediated blue light regulation of seedling photomorphogenic development and genome expression profile.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wang, H -- Ma, L G -- Li, J M -- Zhao, H Y -- Deng, X W -- GM-47850/GM/NIGMS NIH HHS/ -- GM59507/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2001 Oct 5;294(5540):154-8. Epub 2001 Aug 16.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular, Cellular, and Developmental Biology, Yale University, New Haven, CT 06520, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11509693" target="_blank"〉PubMed〈/a〉
    Keywords: Arabidopsis/genetics/*growth & development/*metabolism ; *Arabidopsis Proteins ; Basic-Leucine Zipper Transcription Factors ; Carrier Proteins/chemistry/genetics/*metabolism ; Cell Nucleus/metabolism ; Crosses, Genetic ; Cryptochromes ; Darkness ; *Drosophila Proteins ; Expressed Sequence Tags ; *Eye Proteins ; Flavoproteins/genetics/*metabolism ; Gene Expression Profiling ; Gene Expression Regulation, Plant ; Genes, Plant ; *Light ; Morphogenesis ; Mutation ; Nuclear Proteins/metabolism ; Oxidation-Reduction ; Phenotype ; *Photoreceptor Cells, Invertebrate ; Plant Proteins/chemistry/genetics/*metabolism ; Plants, Genetically Modified ; Precipitin Tests ; Protein Binding ; Protein Structure, Tertiary ; Receptors, G-Protein-Coupled ; Recombinant Fusion Proteins/metabolism ; Signal Transduction ; *Ubiquitin-Protein Ligases
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  • 88
    Publication Date: 2001-09-08
    Description: Multidrug resistance (MDR) is a serious medical problem and presents a major challenge to the treatment of disease and the development of novel therapeutics. ABC transporters that are associated with multidrug resistance (MDR-ABC transporters) translocate hydrophobic drugs and lipids from the inner to the outer leaflet of the cell membrane. To better elucidate the structural basis for the "flip-flop" mechanism of substrate movement across the lipid bilayer, we have determined the structure of the lipid flippase MsbA from Escherichia coli by x-ray crystallography to a resolution of 4.5 angstroms. MsbA is organized as a homodimer with each subunit containing six transmembrane alpha-helices and a nucleotide-binding domain. The asymmetric distribution of charged residues lining a central chamber suggests a general mechanism for the translocation of substrate by MsbA and other MDR-ABC transporters. The structure of MsbA can serve as a model for the MDR-ABC transporters that confer multidrug resistance to cancer cells and infectious microorganisms.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chang, G -- Roth, C B -- GM61905-01/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2001 Sep 7;293(5536):1793-800.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Biology, MB-9, The Scripps Research Institute, La Jolla, CA 92037, USA. gchang@scripps.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11546864" target="_blank"〉PubMed〈/a〉
    Keywords: *ATP-Binding Cassette Transporters ; Adenosine Triphosphate/metabolism ; Amino Acid Sequence ; Bacterial Proteins/*chemistry/genetics/metabolism ; Binding Sites ; Biological Transport ; Crystallography, X-Ray ; Dimerization ; *Drug Resistance, Microbial ; *Drug Resistance, Multiple ; Escherichia coli/*enzymology ; Lipid A/metabolism ; Membrane Proteins/*chemistry/genetics/metabolism ; Models, Molecular ; Molecular Sequence Data ; Protein Structure, Secondary ; Protein Structure, Tertiary ; Sequence Alignment ; Static Electricity ; Structure-Activity Relationship
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  • 89
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2001-11-27
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Normile, D -- New York, N.Y. -- Science. 2001 Nov 23;294(5547):1634.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11721025" target="_blank"〉PubMed〈/a〉
    Keywords: Age Determination by Skeleton ; Archaeology/*methods/*standards ; *Fossils ; Humans ; Japan ; Publishing/legislation & jurisprudence ; Reproducibility of Results ; Research Personnel/psychology/standards ; Suicide ; Time Factors
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  • 90
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2001-12-06
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rollin, B E -- Loew, F M -- New York, N.Y. -- Science. 2001 Nov 30;294(5548):1831-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11732546" target="_blank"〉PubMed〈/a〉
    Keywords: *Animal Care Committees ; Animal Experimentation ; Animal Rights ; Animal Welfare/*standards ; Animals ; Decision Making ; Ethical Review/*standards ; *Models, Animal ; Peer Review, Research/methods/*standards ; Reproducibility of Results ; Research Design/*standards ; Time Factors
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  • 91
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2001-05-16
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉States, D J -- New York, N.Y. -- Science. 2001 May 11;292(5519):1066-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11352052" target="_blank"〉PubMed〈/a〉
    Keywords: Authorship ; Base Sequence ; Databases as Topic ; *Human Genome Project/economics ; Humans ; National Institutes of Health (U.S.) ; *Public Sector/economics ; *Publishing ; Time Factors ; United States
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  • 92
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2001-07-07
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Koenig, R -- New York, N.Y. -- Science. 2001 Jul 6;293(5527):31.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11441159" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Climate ; Cnidaria/physiology ; Conservation of Natural Resources ; Greenhouse Effect ; Humans ; Ice ; International Cooperation ; Oceans and Seas ; Specimen Handling/*methods ; Temperature ; Time Factors ; Trees/growth & development/physiology
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  • 93
    Publication Date: 2001-07-11
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Alverson, K -- Bradley, R -- Briffa, K -- Cole, J -- Hughes, M -- Larocque, I -- Pedersen, T -- Thompson, L -- Tudhope, S -- New York, N.Y. -- Science. 2001 Jul 6;293(5527):47-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11444288" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Carbon Dioxide/metabolism ; *Climate ; Cnidaria/physiology ; Conservation of Natural Resources ; Greenhouse Effect ; Humans ; Ice ; Oceans and Seas ; Rain ; Seawater/analysis/chemistry ; Specimen Handling/*methods ; Temperature ; Time Factors ; Trees/growth & development/physiology
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  • 94
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2001-08-18
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cheney, R E -- Rodriguez, O C -- R29 DC003299/DC/NIDCD NIH HHS/ -- New York, N.Y. -- Science. 2001 Aug 17;293(5533):1263-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cell and Molecular Physiology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA. cheneyr@med.unc.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11509712" target="_blank"〉PubMed〈/a〉
    Keywords: Actin Cytoskeleton/metabolism ; Animals ; Biological Transport ; Calcium-Calmodulin-Dependent Protein Kinase Type 2 ; Calcium-Calmodulin-Dependent Protein Kinases/*metabolism ; Calmodulin-Binding Proteins/chemistry/*metabolism ; Cell Cycle ; Humans ; Intermediate Filament Proteins/metabolism ; Melanosomes/*metabolism ; Molecular Motor Proteins/*metabolism ; *Myosin Heavy Chains ; *Myosin Type V ; Nerve Tissue Proteins/chemistry/*metabolism ; Organelles/metabolism ; Phosphorylation ; Protein Structure, Tertiary ; Xenopus ; rab GTP-Binding Proteins/metabolism
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    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 95
    Publication Date: 2001-09-15
    Description: Infections with Plasmodium falciparum during pregnancy lead to the accumulation of parasitized red blood cells (infected erythrocytes, IEs) in the placenta. IEs of P. falciparum isolates that infect the human placenta were found to bind immunoglobulin G (IgG). A strain of P. falciparum cloned for IgG binding adhered massively to placental syncytiotrophoblasts in a pattern similar to that of natural infections. Adherence was inhibited by IgG-binding proteins, but not by glycosaminoglycans or enzymatic digestion of chondroitin sulfate A or hyaluronic acid. Normal, nonimmune IgG that is bound to a duffy binding-like domain beta of the P. falciparum erythrocyte membrane protein 1 (PfEMP1) might at the IE surface act as a bridge to neonatal Fc receptors of the placenta.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Flick, K -- Scholander, C -- Chen, Q -- Fernandez, V -- Pouvelle, B -- Gysin, J -- Wahlgren, M -- New York, N.Y. -- Science. 2001 Sep 14;293(5537):2098-100.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Microbiology and Tumor Biology Center (MTC), Karolinska Institutet and Swedish Institute for Infectious Disease Control, Box 280, S-171 77 Stockholm, Sweden.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11557894" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Adhesion ; Chondroitin ABC Lyase/metabolism ; Chondroitin Sulfates/metabolism/pharmacology ; Cloning, Molecular ; Erythrocytes/metabolism/*parasitology ; Female ; Humans ; Hyaluronic Acid/pharmacology ; Hyaluronoglucosaminidase/metabolism ; Immunoglobulin G/immunology/*metabolism ; Malaria, Falciparum/immunology/*parasitology ; Placenta/blood supply/immunology/*parasitology ; Placenta Diseases/immunology/parasitology ; Plasmodium falciparum/genetics/immunology/metabolism ; Pregnancy ; Pregnancy Complications, Parasitic/immunology/*parasitology ; Protein Structure, Tertiary ; Protozoan Proteins/chemistry/immunology/*metabolism ; Receptors, Fc/*metabolism ; Recombinant Fusion Proteins ; Staphylococcal Protein A/metabolism/pharmacology ; Trophoblasts/immunology/parasitology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 96
    Publication Date: 2002-02-02
    Description: In bacteria, promoter recognition depends on the RNA polymerase sigma subunit, which combines with the catalytically proficient RNA polymerase core to form the holoenzyme. The major class of bacterial promoters is defined by two conserved elements (the -10 and -35 elements, which are 10 and 35 nucleotides upstream of the initiation point, respectively) that are contacted by sigma in the holoenzyme. We show that recognition of promoters of this class depends on the "flexible flap" domain of the RNA polymerase beta subunit. The flap interacts with conserved region 4 of sigma and triggers a conformational change that moves region 4 into the correct position for interaction with the -35 element. Because the flexible flap is evolutionarily conserved, this domain may facilitate promoter recognition by specificity factors in eukaryotes as well.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kuznedelov, Konstantin -- Minakhin, Leonid -- Niedziela-Majka, Anita -- Dove, Simon L -- Rogulja, Dragana -- Nickels, Bryce E -- Hochschild, Ann -- Heyduk, Tomasz -- Severinov, Konstantin -- GM44025/GM/NIGMS NIH HHS/ -- GM50514/GM/NIGMS NIH HHS/ -- R01 GM044025/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2002 Feb 1;295(5556):855-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Waksman Institute, Department of Genetics, Rutgers University, Piscataway, NJ 08854, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11823642" target="_blank"〉PubMed〈/a〉
    Keywords: Allosteric Regulation ; Amino Acid Sequence ; Bacterial Proteins/chemistry/genetics/*metabolism ; DNA, Bacterial/genetics/metabolism ; DNA-Directed RNA Polymerases/chemistry/genetics/*metabolism ; Energy Transfer ; Escherichia coli/*enzymology/genetics ; Holoenzymes/chemistry/metabolism ; Models, Molecular ; Molecular Sequence Data ; *Promoter Regions, Genetic ; Protein Conformation ; Protein Structure, Tertiary ; Recombinant Fusion Proteins/chemistry/metabolism ; Sigma Factor/chemistry/genetics/*metabolism ; *Transcription, Genetic ; Two-Hybrid System Techniques
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 97
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 2001-10-13
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Humphries, M J -- Mould, A P -- New York, N.Y. -- Science. 2001 Oct 12;294(5541):316-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Wellcome Trust Centre for Cell-Matrix Research, School of Biological Sciences, University of Manchester, M13 9PT, UK. martin.humphries@man.ac.uk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11598288" target="_blank"〉PubMed〈/a〉
    Keywords: Binding Sites ; Calcium/metabolism ; Crystallization ; Crystallography, X-Ray ; Dimerization ; Drug Design ; Humans ; Ligands ; Metals/metabolism ; Models, Molecular ; Protein Binding ; Protein Conformation ; Protein Folding ; Protein Structure, Quaternary ; Protein Structure, Secondary ; Protein Structure, Tertiary ; Protein Subunits ; Receptors, Vitronectin/*chemistry/metabolism
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 98
    Publication Date: 2001-02-07
    Description: Mitral cells (MCs) in the olfactory bulb (OB) respond to odors with slow temporal firing patterns. The representation of each odor by activity patterns across the MC population thus changes continuously throughout a stimulus, in an odor-specific manner. In the zebrafish OB, we found that this distributed temporal patterning progressively reduced the similarity between ensemble representations of related odors, thereby making each odor's representation more specific over time. The tuning of individual MCs was not sharpened during this process. Hence, the individual responses of MCs did not become more specific, but the odor-coding MC assemblies changed such that their overlap decreased. This optimization of ensemble representations did not occur among olfactory afferents but resulted from OB circuit dynamics. Time can therefore gradually optimize stimulus representations in a sensory network.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Friedrich, R W -- Laurent, G -- New York, N.Y. -- Science. 2001 Feb 2;291(5505):889-94.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉California Institute of Technology, Division of Biology, MC 139-74, Pasadena, CA 91125, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11157170" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acids ; Animals ; Dendrites/physiology ; In Vitro Techniques ; Interneurons/physiology ; Membrane Potentials ; Neural Conduction ; Neural Inhibition ; Neurons/physiology ; *Odors ; Olfactory Bulb/*cytology/*physiology ; Olfactory Pathways/physiology ; Olfactory Receptor Neurons/physiology ; Patch-Clamp Techniques ; Receptors, Odorant/physiology ; Smell/*physiology ; Time Factors ; Zebrafish
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 99
    Publication Date: 2001-03-17
    Description: The activation of gp130, a shared signal-transducing receptor for a family of cytokines, is initiated by recognition of ligand followed by oligomerization into a higher order signaling complex. Kaposi's sarcoma-associated herpesvirus encodes a functional homolog of human interleukin-6 (IL-6) that activates human gp130. In the 2.4 angstrom crystal structure of the extracellular signaling assembly between viral IL-6 and human gp130, two complexes are cross-linked into a tetramer through direct interactions between the immunoglobulin domain of gp130 and site III of viral IL-6, which is necessary for receptor activation. Unlike human IL-6 (which uses many hydrophilic residues), the viral cytokine largely uses hydrophobic amino acids to contact gp130, which enhances the complementarity of the viral IL-6-gp130 binding interfaces. The cross-reactivity of gp130 is apparently due to a chemical plasticity evident in the amphipathic gp130 cytokine-binding sites.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chow , D -- He , X -- Snow, A L -- Rose-John, S -- Garcia, K C -- R01-AI-48540-01/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 2001 Mar 16;291(5511):2150-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Microbiology and Immunology, Stanford University School of Medicine, Fairchild D319, 299 Campus Drive, Stanford, CA 94305, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11251120" target="_blank"〉PubMed〈/a〉
    Keywords: Antigens, CD/*chemistry/*metabolism ; Binding Sites ; Crystallization ; Crystallography, X-Ray ; Cytokine Receptor gp130 ; Epitopes ; Humans ; Hydrogen Bonding ; Interleukin-6/*chemistry/immunology/*metabolism ; Membrane Glycoproteins/*chemistry/*metabolism ; Models, Molecular ; Molecular Mimicry ; Protein Conformation ; Protein Structure, Quaternary ; Protein Structure, Secondary ; Protein Structure, Tertiary ; Signal Transduction ; Viral Proteins/*chemistry/immunology/*metabolism
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 100
    Publication Date: 2002-09-14
    Description: Mutations in the BRCA2 (breast cancer susceptibility gene 2) tumor suppressor lead to chromosomal instability due to defects in the repair of double-strand DNA breaks (DSBs) by homologous recombination, but BRCA2's role in this process has been unclear. Here, we present the 3.1 angstrom crystal structure of a approximately 90-kilodalton BRCA2 domain bound to DSS1, which reveals three oligonucleotide-binding (OB) folds and a helix-turn-helix (HTH) motif. We also (i) demonstrate that this BRCA2 domain binds single-stranded DNA, (ii) present its 3.5 angstrom structure bound to oligo(dT)9, (iii) provide data that implicate the HTH motif in dsDNA binding, and (iv) show that BRCA2 stimulates RAD51-mediated recombination in vitro. These findings establish that BRCA2 functions directly in homologous recombination and provide a structural and biochemical basis for understanding the loss of recombination-mediated DSB repair in BRCA2-associated cancers.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Yang, Haijuan -- Jeffrey, Philip D -- Miller, Julie -- Kinnucan, Elspeth -- Sun, Yutong -- Thoma, Nicolas H -- Zheng, Ning -- Chen, Phang-Lang -- Lee, Wen-Hwa -- Pavletich, Nikola P -- New York, N.Y. -- Science. 2002 Sep 13;297(5588):1837-48.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pharmacology, Sloan-Kettering Division, Joan and Sanford I. Weill Graduate School of Medical Sciences, Cornell University, New York, NY 10021, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12228710" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; BRCA2 Protein/*chemistry/genetics/*metabolism ; Binding Sites ; Crystallography, X-Ray ; DNA/metabolism ; *DNA Repair ; DNA, Single-Stranded/*metabolism ; DNA-Binding Proteins/metabolism ; Genes, BRCA2 ; Helix-Turn-Helix Motifs ; Humans ; Hydrogen Bonding ; Hydrophobic and Hydrophilic Interactions ; Mice ; Molecular Sequence Data ; Mutation ; Proteasome Endopeptidase Complex ; Protein Conformation ; Protein Folding ; Protein Structure, Secondary ; Protein Structure, Tertiary ; Proteins/chemistry/*metabolism ; Rad51 Recombinase ; Rats ; *Recombination, Genetic
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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