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  • 1
    Publikationsdatum: 2009-12-19
    Beschreibung: We report here crystallization at long range in networks of like-charge supramolecular peptide filaments mediated by repulsive forces. The crystallization is spontaneous beyond a given concentration of the molecules that form the filaments but can be triggered by x-rays at lower concentrations. The crystalline domains formed by x-ray irradiation, with interfilament separations of up to 320 angstroms, can be stable for hours after the beam is turned off, and ions that screen charges on the filaments suppress ordering. We hypothesize that the stability of crystalline domains emerges from a balance of repulsive tensions linked to native or x-ray-induced charges and the mechanical compressive entrapment of filaments within a network. Similar phenomena may occur naturally in the cytoskeleton of cells and, if induced externally in biological or artificial systems, lead to possible biomedical and lithographic functions.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3086396/" 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/PMC3086396/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cui, Honggang -- Pashuck, E Thomas -- Velichko, Yuri S -- Weigand, Steven J -- Cheetham, Andrew G -- Newcomb, Christina J -- Stupp, Samuel I -- 5R01 DE015920/DE/NIDCR NIH HHS/ -- R01 DE015920/DE/NIDCR NIH HHS/ -- R01 DE015920-05/DE/NIDCR NIH HHS/ -- New York, N.Y. -- Science. 2010 Jan 29;327(5965):555-9. doi: 10.1126/science.1182340. Epub 2009 Dec 17.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Materials Science and Engineering, Northwestern University, 2220 Campus Drive, Evanston, IL 60208, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20019248" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Cryoelectron Microscopy ; Crystallization ; *Nanostructures/ultrastructure ; Oxygen ; Peptides/*chemistry/*radiation effects ; Physicochemical Phenomena ; Protein Conformation ; Scattering, Small Angle ; Static Electricity ; Temperature ; X-Ray Diffraction ; X-Rays
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 2
    Publikationsdatum: 2009-12-17
    Beschreibung: Emerging evidence indicates that gene expression in higher organisms is regulated by RNA polymerase II stalling during early transcription elongation. To probe the mechanisms responsible for this regulation, we developed methods to isolate and characterize short RNAs derived from stalled RNA polymerase II in Drosophila cells. Significant levels of these short RNAs were generated from more than one-third of all genes, indicating that promoter-proximal stalling is a general feature of early polymerase elongation. Nucleotide composition of the initially transcribed sequence played an important role in promoting transcriptional stalling by rendering polymerase elongation complexes highly susceptible to backtracking and arrest. These results indicate that the intrinsic efficiency of early elongation can greatly affect gene expression.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3435875/" 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/PMC3435875/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Nechaev, Sergei -- Fargo, David C -- dos Santos, Gilberto -- Liu, Liwen -- Gao, Yuan -- Adelman, Karen -- ZIA ES101987-05/Intramural NIH HHS/ -- New York, N.Y. -- Science. 2010 Jan 15;327(5963):335-8. doi: 10.1126/science.1181421. Epub 2009 Dec 10.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Molecular Carcinogenesis, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, NC 27709, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20007866" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Base Composition ; Cell Line ; Drosophila melanogaster ; *Gene Expression Regulation ; *Genes, Insect ; Genome, Insect ; Oligonucleotide Array Sequence Analysis ; *Promoter Regions, Genetic ; RNA/genetics/*metabolism ; RNA Caps/genetics/metabolism ; RNA Polymerase II/*metabolism ; RNA, Messenger/genetics/metabolism ; Transcription Initiation Site ; *Transcription, Genetic
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 3
    Publikationsdatum: 2009-12-17
    Beschreibung: Metabotropic glutamate receptor 5 (mGluR5) is highly expressed in the mammalian central nervous system (CNS). It is involved in multiple physiological functions and is a target for treatment of various CNS disorders, including schizophrenia. We report that Norbin, a neuron-specific protein, physically interacts with mGluR5 in vivo, increases the cell surface localization of the receptor, and positively regulates mGluR5 signaling. Genetic deletion of Norbin attenuates mGluR5-dependent stable changes in synaptic function measured as long-term depression or long-term potentiation of synaptic transmission in the hippocampus. As with mGluR5 knockout mice or mice treated with mGluR5-selective antagonists, Norbin knockout mice showed a behavioral phenotype associated with a rodent model of schizophrenia, as indexed by alterations both in sensorimotor gating and psychotomimetic-induced locomotor activity.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2796550/" 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/PMC2796550/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wang, Hong -- Westin, Linda -- Nong, Yi -- Birnbaum, Shari -- Bendor, Jacob -- Brismar, Hjalmar -- Nestler, Eric -- Aperia, Anita -- Flajolet, Marc -- Greengard, Paul -- DA 10044/DA/NIDA NIH HHS/ -- MH074866/MH/NIMH NIH HHS/ -- MH66172/MH/NIMH NIH HHS/ -- P01 DA010044/DA/NIDA NIH HHS/ -- P01 DA010044-020002/DA/NIDA NIH HHS/ -- P01 DA010044-030002/DA/NIDA NIH HHS/ -- P01 DA010044-04/DA/NIDA NIH HHS/ -- P01 DA010044-040002/DA/NIDA NIH HHS/ -- P01 DA010044-05/DA/NIDA NIH HHS/ -- P01 DA010044-050002/DA/NIDA NIH HHS/ -- P01 DA010044-06/DA/NIDA NIH HHS/ -- P01 DA010044-060002/DA/NIDA NIH HHS/ -- P01 DA010044-07/DA/NIDA NIH HHS/ -- P01 DA010044-070002/DA/NIDA NIH HHS/ -- P01 DA010044-08/DA/NIDA NIH HHS/ -- P01 DA010044-080002/DA/NIDA NIH HHS/ -- P01 DA010044-09/DA/NIDA NIH HHS/ -- P01 DA010044-090002/DA/NIDA NIH HHS/ -- P01 DA010044-10/DA/NIDA NIH HHS/ -- P01 DA010044-100002/DA/NIDA NIH HHS/ -- P01 DA010044-11/DA/NIDA NIH HHS/ -- P01 DA010044-110005/DA/NIDA NIH HHS/ -- P01 DA010044-12/DA/NIDA NIH HHS/ -- P01 DA010044-120005/DA/NIDA NIH HHS/ -- P01 DA010044-129002/DA/NIDA NIH HHS/ -- P01 DA010044-13/DA/NIDA NIH HHS/ -- P01 DA010044-130005/DA/NIDA NIH HHS/ -- P01 DA010044-139002/DA/NIDA NIH HHS/ -- P01 DA010044-14/DA/NIDA NIH HHS/ -- P01 DA010044-140005/DA/NIDA NIH HHS/ -- P01 DA010044-149002/DA/NIDA NIH HHS/ -- P01 DA010044-14S1/DA/NIDA NIH HHS/ -- P01 DA010044-14S10005/DA/NIDA NIH HHS/ -- P01 DA010044-14S19002/DA/NIDA NIH HHS/ -- P50 MH074866/MH/NIMH NIH HHS/ -- P50 MH074866-010001/MH/NIMH NIH HHS/ -- P50 MH074866-020001/MH/NIMH NIH HHS/ -- P50 MH074866-030001/MH/NIMH NIH HHS/ -- P50 MH074866-039001/MH/NIMH NIH HHS/ -- P50 MH074866-040001/MH/NIMH NIH HHS/ -- P50 MH074866-050001/MH/NIMH NIH HHS/ -- New York, N.Y. -- Science. 2009 Dec 11;326(5959):1554-7. doi: 10.1126/science.1178496.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Molecular and Cellular Neuroscience, Rockefeller University, New York, NY 10065, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20007903" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Brain/*metabolism ; Calcium/metabolism ; Calcium Signaling ; Cell Line ; Cell Membrane/metabolism ; Humans ; Mice ; Mice, Knockout ; Motor Activity ; Nerve Tissue Proteins/genetics/*metabolism ; Neuronal Plasticity ; Protein Binding ; Rats ; Receptor, Metabotropic Glutamate 5 ; Receptors, Metabotropic Glutamate/genetics/*metabolism ; Reflex, Startle ; Schizophrenia/physiopathology ; *Signal Transduction ; Synaptic Transmission ; Transfection
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 4
    Publikationsdatum: 2009-12-17
    Beschreibung: 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〉
    Schlagwort(e): 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
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 5
    Publikationsdatum: 2009-12-08
    Beschreibung: 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〉
    Schlagwort(e): 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
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 6
    Publikationsdatum: 2009-12-08
    Beschreibung: Previous x-ray crystal structures have given insight into the mechanism of transcription and the role of general transcription factors in the initiation of the process. A structure of an RNA polymerase II-general transcription factor TFIIB complex at 4.5 angstrom resolution revealed the amino-terminal region of TFIIB, including a loop termed the "B finger," reaching into the active center of the polymerase where it may interact with both DNA and RNA, but this structure showed little of the carboxyl-terminal region. A new crystal structure of the same complex at 3.8 angstrom resolution obtained under different solution conditions is complementary with the previous one, revealing the carboxyl-terminal region of TFIIB, located above the polymerase active center cleft, but showing none of the B finger. In the new structure, the linker between the amino- and carboxyl-terminal regions can also be seen, snaking down from above the cleft toward the active center. The two structures, taken together with others previously obtained, dispel long-standing mysteries of the transcription initiation process.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2813267/" 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/PMC2813267/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Liu, Xin -- Bushnell, David A -- Wang, Dong -- Calero, Guillermo -- Kornberg, Roger D -- AI21144/AI/NIAID NIH HHS/ -- GM049985/GM/NIGMS NIH HHS/ -- K99 GM085136/GM/NIGMS NIH HHS/ -- K99 GM085136-02/GM/NIGMS NIH HHS/ -- R00 GM085136/GM/NIGMS NIH HHS/ -- R01 AI021144/AI/NIAID NIH HHS/ -- R01 AI021144-25/AI/NIAID NIH HHS/ -- R01 GM036659/GM/NIGMS NIH HHS/ -- R01 GM049985/GM/NIGMS NIH HHS/ -- R01 GM049985-16/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2010 Jan 8;327(5962):206-9. doi: 10.1126/science.1182015. Epub 2009 Nov 12.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Structural Biology, 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/19965383" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Amino Acid Sequence ; Catalytic Domain ; Crystallography, X-Ray ; Models, Molecular ; Molecular Sequence Data ; Protein Conformation ; Protein Interaction Domains and Motifs ; Protein Structure, Secondary ; Protein Structure, Tertiary ; RNA Polymerase II/*chemistry/*metabolism ; Repetitive Sequences, Amino Acid ; Saccharomyces cerevisiae/chemistry/genetics/metabolism ; Saccharomyces cerevisiae Proteins/*chemistry/*metabolism ; Transcription Factor TFIIB/*chemistry/*metabolism ; *Transcription, Genetic
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 7
    Publikationsdatum: 2009-12-08
    Beschreibung: Tetrathiomolybdate (TM) is an orally active agent for treatment of disorders of copper metabolism. Here we describe how TM inhibits proteins that regulate copper physiology. Crystallographic results reveal that the surprising stability of the drug complex with the metallochaperone Atx1 arises from formation of a sulfur-bridged copper-molybdenum cluster reminiscent of those found in molybdenum and iron sulfur proteins. Spectroscopic studies indicate that this cluster is stable in solution and corresponds to physiological clusters isolated from TM-treated Wilson's disease animal models. Finally, mechanistic studies show that the drug-metallochaperone inhibits metal transfer functions between copper-trafficking proteins. The results are consistent with a model wherein TM can directly and reversibly down-regulate copper delivery to secreted metalloenzymes and suggest that proteins involved in metal regulation might be fruitful drug targets.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3658115/" 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/PMC3658115/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Alvarez, Hamsell M -- Xue, Yi -- Robinson, Chandler D -- Canalizo-Hernandez, Monica A -- Marvin, Rebecca G -- Kelly, Rebekah A -- Mondragon, Alfonso -- Penner-Hahn, James E -- O'Halloran, Thomas V -- GM38047/GM/NIGMS NIH HHS/ -- GM38784/GM/NIGMS NIH HHS/ -- GM54222/GM/NIGMS NIH HHS/ -- R01 GM038047/GM/NIGMS NIH HHS/ -- R01 GM038784/GM/NIGMS NIH HHS/ -- R01 GM054111/GM/NIGMS NIH HHS/ -- R37 GM038784/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2010 Jan 15;327(5963):331-4. doi: 10.1126/science.1179907. Epub 2009 Nov 26.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉The Chemistry of Life Processes Institute, Northwestern University, Evanston, IL 60208, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19965379" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Carrier Proteins/*antagonists & inhibitors/chemistry/*metabolism ; Cation Transport Proteins/metabolism ; Copper/chemistry/*metabolism ; Crystallography, X-Ray ; Ligands ; Metallochaperones/*antagonists & inhibitors/chemistry/*metabolism ; Models, Chemical ; Models, Molecular ; Molecular Structure ; Molybdenum/chemistry/*metabolism/*pharmacology ; Oxidation-Reduction ; Physicochemical Processes ; Protein Conformation ; Saccharomyces cerevisiae Proteins/*antagonists & inhibitors/chemistry/*metabolism
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    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 8
    facet.materialart.
    Unbekannt
    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 2009-12-08
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Miller, Greg -- New York, N.Y. -- Science. 2009 Dec 4;326(5958):1337-9. doi: 10.1126/science.326.5958.1337.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19965731" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Amyloid beta-Peptides/chemistry/metabolism ; Animals ; Humans ; Nerve Tissue Proteins/chemistry/metabolism ; Neurodegenerative Diseases/*etiology/metabolism/therapy ; Neurons/chemistry/metabolism ; Nuclear Proteins/chemistry/metabolism ; *Prion Diseases ; Prions/*chemistry/metabolism ; Protein Conformation ; Protein Folding ; Proteins/*chemistry/metabolism ; alpha-Synuclein/chemistry/metabolism ; tau Proteins/chemistry
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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  • 9
    Publikationsdatum: 2009-12-08
    Beschreibung: The site on HIV-1 gp120 that binds to the CD4 receptor is vulnerable to antibodies. However, most antibodies that interact with this site cannot neutralize HIV-1. To understand the basis of this resistance, we determined co-crystal structures for two poorly neutralizing, CD4-binding site (CD4BS) antibodies, F105 and b13, in complexes with gp120. Both antibodies exhibited approach angles to gp120 similar to those of CD4 and a rare, broadly neutralizing CD4BS antibody, b12. Slight differences in recognition, however, resulted in substantial differences in F105- and b13-bound conformations relative to b12-bound gp120. Modeling and binding experiments revealed these conformations to be poorly compatible with the viral spike. This incompatibility, the consequence of slight differences in CD4BS recognition, renders HIV-1 resistant to all but the most accurately targeted antibodies.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2862588/" 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/PMC2862588/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chen, Lei -- Kwon, Young Do -- Zhou, Tongqing -- Wu, Xueling -- O'Dell, Sijy -- Cavacini, Lisa -- Hessell, Ann J -- Pancera, Marie -- Tang, Min -- Xu, Ling -- Yang, Zhi-Yong -- Zhang, Mei-Yun -- Arthos, James -- Burton, Dennis R -- Dimitrov, Dimiter S -- Nabel, Gary J -- Posner, Marshall R -- Sodroski, Joseph -- Wyatt, Richard -- Mascola, John R -- Kwong, Peter D -- Z99 AI999999/Intramural NIH HHS/ -- New York, N.Y. -- Science. 2009 Nov 20;326(5956):1123-7. doi: 10.1126/science.1175868.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Vaccine Research Center, 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/19965434" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Amino Acid Sequence ; Antibodies, Neutralizing/chemistry/*immunology/metabolism ; Antigens, CD4/chemistry/*metabolism ; Binding Sites ; Binding Sites, Antibody ; Crystallography, X-Ray ; Epitopes ; HIV Antibodies/*chemistry/*immunology/metabolism ; HIV Envelope Protein gp120/*chemistry/*immunology/metabolism ; Hiv-1 ; Humans ; Hydrophobic and Hydrophilic Interactions ; *Immune Evasion ; Models, Molecular ; Molecular Sequence Data ; Peptide Fragments/chemistry/immunology/metabolism ; Protein Conformation
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
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    American Association for the Advancement of Science (AAAS)
    Publikationsdatum: 2009-12-08
    Beschreibung: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Miller, Greg -- New York, N.Y. -- Science. 2009 Dec 4;326(5958):1338. doi: 10.1126/science.326.5958.1338.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19965732" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Cell Adhesion ; Endocrine Cells/chemistry/metabolism ; Humans ; Melanins/biosynthesis ; Nervous System Physiological Phenomena ; Prions/*chemistry ; Protein Conformation ; *Protein Folding ; Proteins/*chemistry/physiology ; Secretory Vesicles/chemistry/metabolism
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
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