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  • Articles  (585)
  • Amino Acid Sequence  (331)
  • Models, Biological  (272)
  • 2005-2009  (585)
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  • Articles  (585)
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  • 1
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    Crystal structure of the eukaryotic strong inward-rectifier K+ channel Kir2.2 at 3.1 A resolution (2009)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2009-12-19
    Description: Inward-rectifier potassium (K+) channels conduct K+ ions most efficiently in one direction, into the cell. Kir2 channels control the resting membrane voltage in many electrically excitable cells, and heritable mutations cause periodic paralysis and cardiac arrhythmia. We present the crystal structure of Kir2.2 from chicken, which, excluding the unstructured amino and carboxyl termini, is 90% identical to human Kir2.2. Crystals containing rubidium (Rb+), strontium (Sr2+), and europium (Eu3+) reveal binding sites along the ion conduction pathway that are both conductive and inhibitory. The sites correlate with extensive electrophysiological data and provide a structural basis for understanding rectification. The channel's extracellular surface, with large structured turrets and an unusual selectivity filter entryway, might explain the relative insensitivity of eukaryotic inward rectifiers to toxins. These same surface features also suggest a possible approach to the development of inhibitory agents specific to each member of the inward-rectifier K+ channel family.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2819303/" 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/PMC2819303/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tao, Xiao -- Avalos, Jose L -- Chen, Jiayun -- MacKinnon, Roderick -- P30 EB009998/EB/NIBIB NIH HHS/ -- R01 GM043949/GM/NIGMS NIH HHS/ -- R01 GM043949-10/GM/NIGMS NIH HHS/ -- R01 GM043949-11/GM/NIGMS NIH HHS/ -- R01 GM043949-12/GM/NIGMS NIH HHS/ -- R01 GM043949-13/GM/NIGMS NIH HHS/ -- R01 GM043949-14/GM/NIGMS NIH HHS/ -- R01 GM043949-15/GM/NIGMS NIH HHS/ -- R01 GM043949-16/GM/NIGMS NIH HHS/ -- R01 GM043949-17/GM/NIGMS NIH HHS/ -- R01 GM043949-18/GM/NIGMS NIH HHS/ -- R01 GM043949-19/GM/NIGMS NIH HHS/ -- R01 GM043949-20/GM/NIGMS NIH HHS/ -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2009 Dec 18;326(5960):1668-74. doi: 10.1126/science.1180310.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Molecular Neurobiology and Biophysics, Rockefeller University, Howard Hughes Medical Institute, 1230 York Avenue, New York, NY 10065, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20019282" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Motifs ; Amino Acid Sequence ; Animals ; Binding Sites ; Chickens ; Cloning, Molecular ; Crystallography, X-Ray ; Europium/metabolism ; Hydrogen Bonding ; Hydrophobic and Hydrophilic Interactions ; Models, Molecular ; Molecular Sequence Data ; Oocytes ; Patch-Clamp Techniques ; Potassium/metabolism ; Potassium Channel Blockers/pharmacology ; Potassium Channels, Inwardly Rectifying/antagonists & ; inhibitors/*chemistry/metabolism ; Protein Structure, Secondary ; Protein Structure, Tertiary ; Protein Subunits/chemistry ; Rubidium/metabolism ; Sequence Alignment ; Strontium/metabolism ; Xenopus laevis
    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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    p53 controls radiation-induced gastrointestinal syndrome in mice independent of apoptosis (2009)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2009-12-19
    Description: Acute exposure to ionizing radiation can cause lethal damage to the gastrointestinal (GI) tract, a condition called the GI syndrome. Whether the target cells affected by radiation to cause the GI syndrome are derived from the epithelium or endothelium and whether the target cells die by apoptosis or other mechanisms are controversial issues. Studying mouse models, we found that selective deletion of the proapoptotic genes Bak1 and Bax from the GI epithelium or from endothelial cells did not protect mice from developing the GI syndrome after sub-total-body gamma irradiation. In contrast, selective deletion of p53 from the GI epithelium, but not from endothelial cells, sensitized irradiated mice to the GI syndrome. Transgenic mice overexpressing p53 in all tissues were protected from the GI syndrome after irradiation. These results suggest that the GI syndrome is caused by the death of GI epithelial cells and that these epithelial cells die by a mechanism that is regulated by p53 but independent of apoptosis.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2897160/" 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/PMC2897160/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kirsch, David G -- Santiago, Philip M -- di Tomaso, Emmanuelle -- Sullivan, Julie M -- Hou, Wu-Shiun -- Dayton, Talya -- Jeffords, Laura B -- Sodha, Pooja -- Mercer, Kim L -- Cohen, Rhianna -- Takeuchi, Osamu -- Korsmeyer, Stanley J -- Bronson, Roderick T -- Kim, Carla F -- Haigis, Kevin M -- Jain, Rakesh K -- Jacks, Tyler -- K08 CA 114176/CA/NCI NIH HHS/ -- K08 CA114176/CA/NCI NIH HHS/ -- K08 CA114176-05/CA/NCI NIH HHS/ -- P01 CA080124/CA/NCI NIH HHS/ -- P01 CA080124-01A1/CA/NCI NIH HHS/ -- P01 CA80124/CA/NCI NIH HHS/ -- P30 CA014051/CA/NCI NIH HHS/ -- P30 CA014051-38/CA/NCI NIH HHS/ -- P30 DK043351/DK/NIDDK NIH HHS/ -- P30-CA14051/CA/NCI NIH HHS/ -- RC1 AI078521/AI/NIAID NIH HHS/ -- RC1 AI078521-01/AI/NIAID NIH HHS/ -- RC1-AI078521/AI/NIAID NIH HHS/ -- U19-AI06775/AI/NIAID NIH HHS/ -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2010 Jan 29;327(5965):593-6. doi: 10.1126/science.1166202. Epub 2009 Dec 17.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20019247" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Apoptosis ; Cell Death ; Epithelial Cells/cytology/physiology/radiation effects ; Gamma Rays/*adverse effects ; Gene Deletion ; Genes, p53 ; Intestinal Diseases/etiology/pathology/*physiopathology ; Intestinal Mucosa/pathology/physiopathology/*radiation effects ; Intestine, Small/pathology/physiopathology/*radiation effects ; Mesoderm/cytology ; Mice ; Mice, Transgenic ; Models, Biological ; Radiation Dosage ; Radiation Injuries/etiology/pathology/*physiopathology ; Tumor Suppressor Protein p53/*physiology ; bcl-2 Homologous Antagonist-Killer Protein/genetics/metabolism ; bcl-2-Associated X Protein/genetics/metabolism
    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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  • 3
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    Cell-specific information processing in segregating populations of Eph receptor ephrin-expressing cells (2009)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2009-12-17
    Description: Cells have self-organizing properties that control their behavior in complex tissues. Contact between cells expressing either B-type Eph receptors or their transmembrane ephrin ligands initiates bidirectional signals that regulate cell positioning. However, simultaneously investigating how information is processed in two interacting cell types remains a challenge. We implemented a proteomic strategy to systematically determine cell-specific signaling networks underlying EphB2- and ephrin-B1-controlled cell sorting. Quantitative mass spectrometric analysis of mixed populations of EphB2- and ephrin-B1-expressing cells that were labeled with different isotopes revealed cell-specific tyrosine phosphorylation events. Functional associations between these phosphotyrosine signaling networks and cell sorting were established with small interfering RNA screening. Data-driven network modeling revealed that signaling between mixed EphB2- and ephrin-B1-expressing cells is asymmetric and that the distinct cell types use different tyrosine kinases and targets to process signals induced by cell-cell contact. We provide systems- and cell-specific network models of contact-initiated signaling between two distinct cell types.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Jorgensen, Claus -- Sherman, Andrew -- Chen, Ginny I -- Pasculescu, Adrian -- Poliakov, Alexei -- Hsiung, Marilyn -- Larsen, Brett -- Wilkinson, David G -- Linding, Rune -- Pawson, Tony -- MC_U117532048/Medical Research Council/United Kingdom -- MOP-6849/Canadian Institutes of Health Research/Canada -- New York, N.Y. -- Science. 2009 Dec 11;326(5959):1502-9. doi: 10.1126/science.1176615.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Samuel Lunenfeld Research Institute (SLRI), Mount Sinai Hospital, Toronto M5G 1X5, Canada.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20007894" target="_blank"〉PubMed〈/a〉
    Keywords: Adaptor Proteins, Signal Transducing/metabolism ; Algorithms ; Cell Line ; Ephrin-B1/genetics/*metabolism ; Humans ; Ligands ; Mass Spectrometry ; Models, Biological ; PDZ Domains ; Phosphorylation ; Protein Binding ; Protein Interaction Domains and Motifs ; Protein-Tyrosine Kinases/metabolism ; Proteomics ; RNA, Small Interfering ; Receptor, EphB2/genetics/*metabolism ; *Signal Transduction ; Tyrosine/metabolism ; src Homology Domains
    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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  • 4
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    Haploid genetic screens in human cells identify host factors used by pathogens (2009)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2009-12-08
    Description: Loss-of-function genetic screens in model organisms have elucidated numerous biological processes, but the diploid genome of mammalian cells has precluded large-scale gene disruption. We used insertional mutagenesis to develop a screening method to generate null alleles in a human cell line haploid for all chromosomes except chromosome 8. Using this approach, we identified host factors essential for infection with influenza and genes encoding important elements of the biosynthetic pathway of diphthamide, which are required for the cytotoxic effects of diphtheria toxin and exotoxin A. We also identified genes needed for the action of cytolethal distending toxin, including a cell-surface protein that interacts with the toxin. This approach has both conceptual and practical parallels with genetic approaches in haploid yeast.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Carette, Jan E -- Guimaraes, Carla P -- Varadarajan, Malini -- Park, Annie S -- Wuethrich, Irene -- Godarova, Alzbeta -- Kotecki, Maciej -- Cochran, Brent H -- Spooner, Eric -- Ploegh, Hidde L -- Brummelkamp, Thijn R -- New York, N.Y. -- Science. 2009 Nov 27;326(5957):1231-5. doi: 10.1126/science.1178955.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Whitehead Institute for Biomedical Research, 9 Cambridge Center, Cambridge, MA 02142, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19965467" target="_blank"〉PubMed〈/a〉
    Keywords: ADP Ribose Transferases/metabolism/toxicity ; Adenosine Diphosphate Ribose/metabolism ; Amino Acid Sequence ; Antigens, Bacterial/metabolism/toxicity ; Bacterial Toxins/*metabolism/toxicity ; Biosynthetic Pathways ; Cell Line, Tumor ; Diphtheria Toxin/metabolism/toxicity ; Exotoxins/metabolism/toxicity ; Genes ; *Genetic Testing ; *Haploidy ; Histidine/analogs & derivatives/biosynthesis ; *Host-Pathogen Interactions ; Humans ; Influenza A Virus, H1N1 Subtype/*pathogenicity ; Molecular Sequence Data ; Monosaccharide Transport Proteins/genetics/metabolism ; Mutagenesis, Insertional ; N-Acylneuraminate Cytidylyltransferase/genetics/metabolism ; Peptide Elongation Factor 2/metabolism ; Proteins/chemistry/genetics/metabolism ; Virulence Factors/metabolism/toxicity
    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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  • 5
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    A crystal structure of the bifunctional antibiotic simocyclinone D8, bound to DNA gyrase (2009)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2009-12-08
    Description: Simocyclinones are bifunctional antibiotics that inhibit bacterial DNA gyrase by preventing DNA binding to the enzyme. We report the crystal structure of the complex formed between the N-terminal domain of the Escherichia coli gyrase A subunit and simocyclinone D8, revealing two binding pockets that separately accommodate the aminocoumarin and polyketide moieties of the antibiotic. These are close to, but distinct from, the quinolone-binding site, consistent with our observations that several mutations in this region confer resistance to both agents. Biochemical studies show that the individual moieties of simocyclinone D8 are comparatively weak inhibitors of gyrase relative to the parent compound, but their combination generates a more potent inhibitor. Our results should facilitate the design of drug molecules that target these unexploited binding pockets.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Edwards, Marcus J -- Flatman, Ruth H -- Mitchenall, Lesley A -- Stevenson, Clare E M -- Le, Tung B K -- Clarke, Thomas A -- McKay, Adam R -- Fiedler, Hans-Peter -- Buttner, Mark J -- Lawson, David M -- Maxwell, Anthony -- Biotechnology and Biological Sciences Research Council/United Kingdom -- New York, N.Y. -- Science. 2009 Dec 4;326(5958):1415-8. doi: 10.1126/science.1179123.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biological Chemistry, John Innes Centre, Colney, Norwich NR4 7UH, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19965760" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Anti-Bacterial Agents/chemistry/metabolism/pharmacology ; Binding Sites ; Coumarins/chemistry/metabolism/pharmacology ; Crystallography, X-Ray ; DNA Gyrase/*chemistry/genetics/*metabolism ; DNA, Bacterial/metabolism ; Drug Resistance, Bacterial ; Escherichia coli/drug effects/*enzymology/genetics ; Glycosides/chemistry/metabolism/pharmacology ; Ligands ; Models, Molecular ; Molecular Sequence Data ; Molecular Weight ; Mutagenesis, Site-Directed ; Mutation ; Protein Multimerization ; Protein Structure, Tertiary ; Topoisomerase II Inhibitors
    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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  • 6
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    Proteome organization in a genome-reduced bacterium (2009)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 2009-12-08
    Description: The genome of Mycoplasma pneumoniae is among the smallest found in self-replicating organisms. To study the basic principles of bacterial proteome organization, we used tandem affinity purification-mass spectrometry (TAP-MS) in a proteome-wide screen. The analysis revealed 62 homomultimeric and 116 heteromultimeric soluble protein complexes, of which the majority are novel. About a third of the heteromultimeric complexes show higher levels of proteome organization, including assembly into larger, multiprotein complex entities, suggesting sequential steps in biological processes, and extensive sharing of components, implying protein multifunctionality. Incorporation of structural models for 484 proteins, single-particle electron microscopy, and cellular electron tomograms provided supporting structural details for this proteome organization. The data set provides a blueprint of the minimal cellular machinery required for life.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kuhner, Sebastian -- van Noort, Vera -- Betts, Matthew J -- Leo-Macias, Alejandra -- Batisse, Claire -- Rode, Michaela -- Yamada, Takuji -- Maier, Tobias -- Bader, Samuel -- Beltran-Alvarez, Pedro -- Castano-Diez, Daniel -- Chen, Wei-Hua -- Devos, Damien -- Guell, Marc -- Norambuena, Tomas -- Racke, Ines -- Rybin, Vladimir -- Schmidt, Alexander -- Yus, Eva -- Aebersold, Ruedi -- Herrmann, Richard -- Bottcher, Bettina -- Frangakis, Achilleas S -- Russell, Robert B -- Serrano, Luis -- Bork, Peer -- Gavin, Anne-Claude -- New York, N.Y. -- Science. 2009 Nov 27;326(5957):1235-40. doi: 10.1126/science.1176343.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉European Molecular Biology Laboratory, Meyerhofstrasse 1, D-69117 Heidelberg, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19965468" target="_blank"〉PubMed〈/a〉
    Keywords: Bacterial Proteins/*analysis/isolation & purification/metabolism ; Computational Biology ; *Genome, Bacterial ; Mass Spectrometry/methods ; Metabolic Networks and Pathways ; Microscopy, Electron ; Models, Biological ; Models, Molecular ; Multiprotein Complexes/*analysis/metabolism ; Mycoplasma pneumoniae/*chemistry/*genetics/metabolism/ultrastructure ; Pattern Recognition, Automated ; Protein Interaction Mapping ; *Proteome ; Systems Biology
    Print ISSN: 0036-8075
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  • 7
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    Mutations in two independent pathways are sufficient to create hermaphroditic nematodes (2009)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 2009-12-08
    Description: Although the nematode Caenorhabditis elegans produces self-fertile hermaphrodites, it descended from a male/female species, so hermaphroditism provides a model for the origin of novel traits. In the related species C. remanei, which has only male and female sexes, lowering the activity of tra-2 by RNA interference created XX animals that made spermatids as well as oocytes, but their spermatids could not activate without the addition of male seminal fluid. However, by lowering the expression of both tra-2 and swm-1, a gene that regulates sperm activation in C. elegans, we produced XX animals with active sperm that were self-fertile. Thus, the evolution of hermaphroditism in Caenorhabditis probably required two steps: a mutation in the sex-determination pathway that caused XX spermatogenesis and a mutation that allowed these spermatids to self-activate.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Baldi, Chris -- Cho, Soochin -- Ellis, Ronald E -- New York, N.Y. -- Science. 2009 Nov 13;326(5955):1002-5. doi: 10.1126/science.1176013.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Graduate School of Biomedical Sciences, University of Medicine and Dentistry of New Jersey, Stratford, NJ 08084, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19965511" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Base Sequence ; *Biological Evolution ; Caenorhabditis/anatomy & histology/classification/*genetics/*physiology ; Caenorhabditis elegans/anatomy & histology/classification/*genetics/*physiology ; Caenorhabditis elegans Proteins/genetics/physiology ; Crosses, Genetic ; Disorders of Sex Development/genetics ; Female ; Genes, Helminth ; Germ Cells/physiology ; Male ; Membrane Proteins/genetics/physiology ; Molecular Sequence Data ; *Mutation ; Oogenesis ; Ovulation ; Phylogeny ; Reproduction ; Selection, Genetic ; Sex Determination Processes ; Spermatids/physiology ; Spermatogenesis
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  • 8
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    Cell biology. Nuclear export of small RNAs (2009)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 2009-12-08
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Stewart, Murray -- Wellcome Trust/United Kingdom -- New York, N.Y. -- Science. 2009 Nov 27;326(5957):1195-6. doi: 10.1126/science.1183273.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉MRC Laboratory of Molecular Biology, Hills Road, Cambridge CB2 0QH, UK. ms@mrc-lmb.cam.ac.uk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19965455" target="_blank"〉PubMed〈/a〉
    Keywords: Active Transport, Cell Nucleus ; Cell Nucleus/*metabolism ; Cytoplasm/metabolism ; Karyopherins/chemistry/metabolism ; MicroRNAs/chemistry/*metabolism ; Models, Biological ; Nuclear Pore/metabolism ; Nucleic Acid Conformation ; RNA Processing, Post-Transcriptional ; RNA, Small Nuclear/chemistry/*metabolism ; RNA, Transfer/chemistry/*metabolism ; Receptors, Cytoplasmic and Nuclear/chemistry/metabolism ; ran GTP-Binding Protein/metabolism
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  • 9
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    The extracellular matrix: not just pretty fibrils (2009)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 2009-12-08
    Description: The extracellular matrix (ECM) and ECM proteins are important in phenomena as diverse as developmental patterning, stem cell niches, cancer, and genetic diseases. The ECM has many effects beyond providing structural support. ECM proteins typically include multiple, independently folded domains whose sequences and arrangement are highly conserved. Some of these domains bind adhesion receptors such as integrins that mediate cell-matrix adhesion and also transduce signals into cells. However, ECM proteins also bind soluble growth factors and regulate their distribution, activation, and presentation to cells. As organized, solid-phase ligands, ECM proteins can integrate complex, multivalent signals to cells in a spatially patterned and regulated fashion. These properties need to be incorporated into considerations of the functions of the ECM.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3536535/" 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/PMC3536535/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hynes, Richard O -- P01 HL066105/HL/NHLBI NIH HHS/ -- R01 CA017007/CA/NCI NIH HHS/ -- U54 CA126515/CA/NCI NIH HHS/ -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2009 Nov 27;326(5957):1216-9. doi: 10.1126/science.1176009.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA. rohynes@mit.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19965464" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Adhesion ; *Cell Physiological Processes ; Extracellular Matrix/*physiology ; Extracellular Matrix Proteins/chemistry/*metabolism ; Humans ; Intercellular Signaling Peptides and Proteins/metabolism ; Models, Biological ; Protein Binding ; Protein Interaction Domains and Motifs ; Protein Structure, Tertiary ; Signal Transduction ; Transforming Growth Factor beta/metabolism
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  • 10
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    The insect neuropeptide PTTH activates receptor tyrosine kinase torso to initiate metamorphosis (2009)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 2009-12-08
    Description: Holometabolous insects undergo complete metamorphosis to become sexually mature adults. Metamorphosis is initiated by brain-derived prothoracicotropic hormone (PTTH), which stimulates the production of the molting hormone ecdysone via an incompletely defined signaling pathway. Here we demonstrate that Torso, a receptor tyrosine kinase that regulates embryonic terminal cell fate in Drosophila, is the PTTH receptor. Trunk, the embryonic Torso ligand, is related to PTTH, and ectopic expression of PTTH in the embryo partially rescues trunk mutants. In larvae, torso is expressed specifically in the prothoracic gland (PG), and its loss phenocopies the removal of PTTH. The activation of Torso by PTTH stimulates extracellular signal-regulated kinase (ERK) phosphorylation, and the loss of ERK in the PG phenocopies the loss of PTTH and Torso. We conclude that PTTH initiates metamorphosis by activation of the Torso/ERK pathway.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rewitz, Kim F -- Yamanaka, Naoki -- Gilbert, Lawrence I -- O'Connor, Michael B -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2009 Dec 4;326(5958):1403-5. doi: 10.1126/science.1176450.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Genetics, Cell Biology, and Development, University of Minnesota, Minneapolis, MN 55455, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19965758" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Bombyx/*genetics/metabolism ; Cell Line ; Drosophila Proteins/chemistry/genetics/*metabolism ; Drosophila melanogaster/embryology/genetics/*growth & development/metabolism ; Embryo, Nonmammalian/metabolism ; Extracellular Signal-Regulated MAP Kinases/metabolism ; Insect Hormones/chemistry/*metabolism ; Larva/growth & development ; Ligands ; *Metamorphosis, Biological ; Molecular Sequence Data ; Neurons/metabolism ; Phosphorylation ; Pupa/growth & development ; RNA Interference ; Receptor Protein-Tyrosine Kinases/genetics/*metabolism ; Signal Transduction
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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