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  • 1
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    Identification of functional elements and regulatory circuits by Drosophila modENCODE (2010)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2010-12-24
    Beschreibung: To gain insight into how genomic information is translated into cellular and developmental programs, the Drosophila model organism Encyclopedia of DNA Elements (modENCODE) project is comprehensively mapping transcripts, histone modifications, chromosomal proteins, transcription factors, replication proteins and intermediates, and nucleosome properties across a developmental time course and in multiple cell lines. We have generated more than 700 data sets and discovered protein-coding, noncoding, RNA regulatory, replication, and chromatin elements, more than tripling the annotated portion of the Drosophila genome. Correlated activity patterns of these elements reveal a functional regulatory network, which predicts putative new functions for genes, reveals stage- and tissue-specific regulators, and enables gene-expression prediction. Our results provide a foundation for directed experimental and computational studies in Drosophila and related species and also a model for systematic data integration toward comprehensive genomic and functional annotation.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3192495/" 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/PMC3192495/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉modENCODE Consortium -- Roy, Sushmita -- Ernst, Jason -- Kharchenko, Peter V -- Kheradpour, Pouya -- Negre, Nicolas -- Eaton, Matthew L -- Landolin, Jane M -- Bristow, Christopher A -- Ma, Lijia -- Lin, Michael F -- Washietl, Stefan -- Arshinoff, Bradley I -- Ay, Ferhat -- Meyer, Patrick E -- Robine, Nicolas -- Washington, Nicole L -- Di Stefano, Luisa -- Berezikov, Eugene -- Brown, Christopher D -- Candeias, Rogerio -- Carlson, Joseph W -- Carr, Adrian -- Jungreis, Irwin -- Marbach, Daniel -- Sealfon, Rachel -- Tolstorukov, Michael Y -- Will, Sebastian -- Alekseyenko, Artyom A -- Artieri, Carlo -- Booth, Benjamin W -- Brooks, Angela N -- Dai, Qi -- Davis, Carrie A -- Duff, Michael O -- Feng, Xin -- Gorchakov, Andrey A -- Gu, Tingting -- Henikoff, Jorja G -- Kapranov, Philipp -- Li, Renhua -- MacAlpine, Heather K -- Malone, John -- Minoda, Aki -- Nordman, Jared -- Okamura, Katsutomo -- Perry, Marc -- Powell, Sara K -- Riddle, Nicole C -- Sakai, Akiko -- Samsonova, Anastasia -- Sandler, Jeremy E -- Schwartz, Yuri B -- Sher, Noa -- Spokony, Rebecca -- Sturgill, David -- van Baren, Marijke -- Wan, Kenneth H -- Yang, Li -- Yu, Charles -- Feingold, Elise -- Good, Peter -- Guyer, Mark -- Lowdon, Rebecca -- Ahmad, Kami -- Andrews, Justen -- Berger, Bonnie -- Brenner, Steven E -- Brent, Michael R -- Cherbas, Lucy -- Elgin, Sarah C R -- Gingeras, Thomas R -- Grossman, Robert -- Hoskins, Roger A -- Kaufman, Thomas C -- Kent, William -- Kuroda, Mitzi I -- Orr-Weaver, Terry -- Perrimon, Norbert -- Pirrotta, Vincenzo -- Posakony, James W -- Ren, Bing -- Russell, Steven -- Cherbas, Peter -- Graveley, Brenton R -- Lewis, Suzanna -- Micklem, Gos -- Oliver, Brian -- Park, Peter J -- Celniker, Susan E -- Henikoff, Steven -- Karpen, Gary H -- Lai, Eric C -- MacAlpine, David M -- Stein, Lincoln D -- White, Kevin P -- Kellis, Manolis -- R01 HG004037/HG/NHGRI NIH HHS/ -- R01HG004037/HG/NHGRI NIH HHS/ -- RC2HG005639/HG/NHGRI NIH HHS/ -- U01 HG004258/HG/NHGRI NIH HHS/ -- U01 HG004271/HG/NHGRI NIH HHS/ -- U01 HG004279/HG/NHGRI NIH HHS/ -- U01HG004258/HG/NHGRI NIH HHS/ -- U01HG004261/HG/NHGRI NIH HHS/ -- U01HG004264/HG/NHGRI NIH HHS/ -- U01HG004271/HG/NHGRI NIH HHS/ -- U01HG004274/HG/NHGRI NIH HHS/ -- U01HG004279/HG/NHGRI NIH HHS/ -- U41HG004269/HG/NHGRI NIH HHS/ -- ZIA DK015600-14/Intramural NIH HHS/ -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2010 Dec 24;330(6012):1787-97. doi: 10.1126/science.1198374. Epub 2010 Dec 22.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Computer Science and Artificial Intelligence Laboratory, Massachusetts Institute of Technology (MIT), Cambridge, MA 02139, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21177974" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Binding Sites ; *Chromatin/genetics/metabolism ; Computational Biology/methods ; Drosophila Proteins/genetics/metabolism ; Drosophila melanogaster/*genetics/growth & development/metabolism ; Epigenesis, Genetic ; Gene Expression Regulation ; *Gene Regulatory Networks ; Genes, Insect ; *Genome, Insect ; Genomics/methods ; Histones/metabolism ; *Molecular Sequence Annotation ; Nucleosomes/genetics/metabolism ; Promoter Regions, Genetic ; RNA, Small Untranslated/genetics/metabolism ; Transcription Factors/metabolism ; Transcription, Genetic
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
    Standort Signatur Erwartet Verfügbarkeit
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  • 2
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    Frequent mutation of BAP1 in metastasizing uveal melanomas (2010)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2010-11-06
    Beschreibung: Metastasis is a defining feature of malignant tumors and is the most common cause of cancer-related death, yet the genetics of metastasis are poorly understood. We used exome capture coupled with massively parallel sequencing to search for metastasis-related mutations in highly metastatic uveal melanomas of the eye. Inactivating somatic mutations were identified in the gene encoding BRCA1-associated protein 1 (BAP1) on chromosome 3p21.1 in 26 of 31 (84%) metastasizing tumors, including 15 mutations causing premature protein termination and 5 affecting its ubiquitin carboxyl-terminal hydrolase domain. One tumor harbored a frameshift mutation that was germline in origin, thus representing a susceptibility allele. These findings implicate loss of BAP1 in uveal melanoma metastasis and suggest that the BAP1 pathway may be a valuable therapeutic target.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3087380/" 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/PMC3087380/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Harbour, J William -- Onken, Michael D -- Roberson, Elisha D O -- Duan, Shenghui -- Cao, Li -- Worley, Lori A -- Council, M Laurin -- Matatall, Katie A -- Helms, Cynthia -- Bowcock, Anne M -- AR007279-31A1/AR/NIAMS NIH HHS/ -- P30 EY02687C/EY/NEI NIH HHS/ -- R01 CA125970/CA/NCI NIH HHS/ -- R01 CA125970-06/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 2010 Dec 3;330(6009):1410-3. doi: 10.1126/science.1194472. Epub 2010 Nov 4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Ophthalmology and Visual Sciences, Washington University School of Medicine, St. Louis, MO 63110, USA. harbour@vision.wustl.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21051595" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Cell Line, Tumor ; Chromosome Deletion ; Chromosomes, Human, Pair 3/genetics ; Frameshift Mutation ; Germ-Line Mutation ; Humans ; Melanoma/*genetics/*secondary ; *Mutation ; Mutation, Missense ; *Neoplasm Metastasis ; Protein Structure, Tertiary ; RNA Interference ; RNA, Messenger/genetics/metabolism ; RNA, Neoplasm/genetics/metabolism ; Sequence Analysis, DNA ; Tumor Suppressor Proteins/chemistry/*genetics/metabolism ; Ubiquitin Thiolesterase/chemistry/*genetics/metabolism ; Uveal Neoplasms/*genetics
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
    Standort Signatur Erwartet Verfügbarkeit
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  • 3
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    Atomic structure of human adenovirus by cryo-EM reveals interactions among protein networks (2010)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2010-08-28
    Beschreibung: Construction of a complex virus may involve a hierarchy of assembly elements. Here, we report the structure of the whole human adenovirus virion at 3.6 angstroms resolution by cryo-electron microscopy (cryo-EM), revealing in situ atomic models of three minor capsid proteins (IIIa, VIII, and IX), extensions of the (penton base and hexon) major capsid proteins, and interactions within three protein-protein networks. One network is mediated by protein IIIa at the vertices, within group-of-six (GOS) tiles--a penton base and its five surrounding hexons. Another is mediated by ropes (protein IX) that lash hexons together to form group-of-nine (GON) tiles and bind GONs to GONs. The third, mediated by IIIa and VIII, binds each GOS to five surrounding GONs. Optimization of adenovirus for cancer and gene therapy could target these networks.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3412078/" 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/PMC3412078/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Liu, Hongrong -- Jin, Lei -- Koh, Sok Boon S -- Atanasov, Ivo -- Schein, Stan -- Wu, Lily -- Zhou, Z Hong -- 1S10RR23057/RR/NCRR NIH HHS/ -- AI069015/AI/NIAID NIH HHS/ -- CA101904/CA/NCI NIH HHS/ -- GM071940/GM/NIGMS NIH HHS/ -- R01 AI069015/AI/NIAID NIH HHS/ -- R01 CA101904/CA/NCI NIH HHS/ -- R01 GM071940/GM/NIGMS NIH HHS/ -- S10 RR023057/RR/NCRR NIH HHS/ -- New York, N.Y. -- Science. 2010 Aug 27;329(5995):1038-43. doi: 10.1126/science.1187433.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Microbiology, Immunology, and Molecular Genetics, University of California, Los Angeles (UCLA), Los Angeles, CA 90095-7364, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20798312" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Adenoviruses, Human/*chemistry/genetics/metabolism/*ultrastructure ; Capsid/chemistry/ultrastructure ; Capsid Proteins/*chemistry/metabolism/ultrastructure ; Cryoelectron Microscopy ; Genome, Viral ; Image Processing, Computer-Assisted ; Models, Molecular ; Protein Binding ; Protein Conformation ; Protein Interaction Domains and Motifs ; Protein Multimerization ; Protein Structure, Secondary ; Protein Structure, Tertiary ; Virion/chemistry/ultrastructure
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
    Standort Signatur Erwartet Verfügbarkeit
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  • 4
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    Structural basis for broad and potent neutralization of HIV-1 by antibody VRC01 (2010)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2010-07-10
    Beschreibung: During HIV-1 infection, antibodies are generated against the region of the viral gp120 envelope glycoprotein that binds CD4, the primary receptor for HIV-1. Among these antibodies, VRC01 achieves broad neutralization of diverse viral strains. We determined the crystal structure of VRC01 in complex with a human immunodeficiency virus HIV-1 gp120 core. VRC01 partially mimics CD4 interaction with gp120. A shift from the CD4-defined orientation, however, focuses VRC01 onto the vulnerable site of initial CD4 attachment, allowing it to overcome the glycan and conformational masking that diminishes the neutralization potency of most CD4-binding-site antibodies. To achieve this recognition, VRC01 contacts gp120 mainly through immunoglobulin V-gene regions substantially altered from their genomic precursors. Partial receptor mimicry and extensive affinity maturation thus facilitate neutralization of HIV-1 by natural human antibodies.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2981354/" 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/PMC2981354/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zhou, Tongqing -- Georgiev, Ivelin -- Wu, Xueling -- Yang, Zhi-Yong -- Dai, Kaifan -- Finzi, Andres -- Kwon, Young Do -- Scheid, Johannes F -- Shi, Wei -- Xu, Ling -- Yang, Yongping -- Zhu, Jiang -- Nussenzweig, Michel C -- Sodroski, Joseph -- Shapiro, Lawrence -- Nabel, Gary J -- Mascola, John R -- Kwong, Peter D -- P30 AI060354/AI/NIAID NIH HHS/ -- Z99 AI999999/Intramural NIH HHS/ -- New York, N.Y. -- Science. 2010 Aug 13;329(5993):811-7. doi: 10.1126/science.1192819. Epub 2010 Jul 8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health (NIH), Bethesda, MD 20892, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20616231" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): AIDS Vaccines ; Amino Acid Sequence ; Antibodies, Neutralizing/*chemistry/*immunology ; Antibody Affinity ; Antigenic Variation ; Antigens, CD4/chemistry/immunology/metabolism ; Base Sequence ; Binding Sites, Antibody ; Crystallography, X-Ray ; Epitopes/immunology ; HIV Antibodies/*chemistry/*immunology ; HIV Envelope Protein gp120/chemistry/genetics/*immunology ; HIV-1/*immunology ; Humans ; Immunoglobulin Fab Fragments/chemistry/immunology/metabolism ; Models, Molecular ; Molecular Mimicry ; Molecular Sequence Data ; Neutralization Tests ; Protein Conformation ; Protein Structure, Tertiary
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
    Standort Signatur Erwartet Verfügbarkeit
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  • 5
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    Plectasin, a fungal defensin, targets the bacterial cell wall precursor Lipid II (2010)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2010-05-29
    Beschreibung: Host defense peptides such as defensins are components of innate immunity and have retained antibiotic activity throughout evolution. Their activity is thought to be due to amphipathic structures, which enable binding and disruption of microbial cytoplasmic membranes. Contrary to this, we show that plectasin, a fungal defensin, acts by directly binding the bacterial cell-wall precursor Lipid II. A wide range of genetic and biochemical approaches identify cell-wall biosynthesis as the pathway targeted by plectasin. In vitro assays for cell-wall synthesis identified Lipid II as the specific cellular target. Consistently, binding studies confirmed the formation of an equimolar stoichiometric complex between Lipid II and plectasin. Furthermore, key residues in plectasin involved in complex formation were identified using nuclear magnetic resonance spectroscopy and computational modeling.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Schneider, Tanja -- Kruse, Thomas -- Wimmer, Reinhard -- Wiedemann, Imke -- Sass, Vera -- Pag, Ulrike -- Jansen, Andrea -- Nielsen, Allan K -- Mygind, Per H -- Raventos, Dorotea S -- Neve, Soren -- Ravn, Birthe -- Bonvin, Alexandre M J J -- De Maria, Leonardo -- Andersen, Anders S -- Gammelgaard, Lora K -- Sahl, Hans-Georg -- Kristensen, Hans-Henrik -- New York, N.Y. -- Science. 2010 May 28;328(5982):1168-72. doi: 10.1126/science.1185723.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Pharmaceutical Microbiology Section, Institute for Medical Microbiology, Immunology, and Parasitology, University of Bonn, D-53115 Bonn, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20508130" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Anti-Bacterial Agents/pharmacology ; Ascomycota/chemistry ; Bacillus subtilis/drug effects/growth & development/*metabolism/ultrastructure ; Binding Sites ; Cell Membrane/metabolism ; Cell Wall/*metabolism ; Computer Simulation ; Defensins/*metabolism/pharmacology ; Fungal Proteins/*metabolism/pharmacology ; Models, Molecular ; Nuclear Magnetic Resonance, Biomolecular ; Oligonucleotide Array Sequence Analysis ; Peptides/*metabolism/pharmacology ; Protein Conformation ; Staphylococcus/drug effects/growth & development/*metabolism/ultrastructure ; Uridine Diphosphate N-Acetylmuramic Acid/*analogs & derivatives/metabolism ; Vancomycin/pharmacology
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
    Standort Signatur Erwartet Verfügbarkeit
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  • 6
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    Doc2b is a high-affinity Ca2+ sensor for spontaneous neurotransmitter release (2010)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2010-02-13
    Beschreibung: Synaptic vesicle fusion in brain synapses occurs in phases that are either tightly coupled to action potentials (synchronous), immediately following action potentials (asynchronous), or as stochastic events in the absence of action potentials (spontaneous). Synaptotagmin-1, -2, and -9 are vesicle-associated Ca2+ sensors for synchronous release. Here we found that double C2 domain (Doc2) proteins act as Ca2+ sensors to trigger spontaneous release. Although Doc2 proteins are cytosolic, they function analogously to synaptotagmin-1 but with a higher Ca2+ sensitivity. Doc2 proteins bound to N-ethylmaleimide-sensitive factor attachment receptor (SNARE) complexes in competition with synaptotagmin-1. Thus, different classes of multiple C2 domain-containing molecules trigger synchronous versus spontaneous fusion, which suggests a general mechanism for synaptic vesicle fusion triggered by the combined actions of SNAREs and multiple C2 domain-containing proteins.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2846320/" 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/PMC2846320/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Groffen, Alexander J -- Martens, Sascha -- Diez Arazola, Rocio -- Cornelisse, L Niels -- Lozovaya, Natalia -- de Jong, Arthur P H -- Goriounova, Natalia A -- Habets, Ron L P -- Takai, Yoshimi -- Borst, J Gerard -- Brose, Nils -- McMahon, Harvey T -- Verhage, Matthijs -- MC_U105178795/Medical Research Council/United Kingdom -- U.1051.02.007(78795)/Medical Research Council/United Kingdom -- Medical Research Council/United Kingdom -- New York, N.Y. -- Science. 2010 Mar 26;327(5973):1614-8. doi: 10.1126/science.1183765. Epub 2010 Feb 11.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Functional Genomics, CNCR, Neuroscience Campus Amsterdam, VU University and VU Medical Center, Amsterdam, 1081 HV, Netherlands. sander.groffen@cncr.vu.nl〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20150444" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Action Potentials ; Animals ; Binding Sites ; Calcium/*metabolism ; Calcium-Binding Proteins/chemistry/genetics/*metabolism ; Cells, Cultured ; Excitatory Postsynaptic Potentials ; Hippocampus/cytology ; Inhibitory Postsynaptic Potentials ; Membrane Fusion ; Mice ; Mice, Knockout ; Mutant Proteins/genetics/metabolism ; Nerve Tissue Proteins/chemistry/genetics/*metabolism ; Neurons/physiology ; Neurotransmitter Agents/*metabolism ; Patch-Clamp Techniques ; Protein Structure, Tertiary ; Purkinje Cells/physiology ; Rats ; SNARE Proteins/metabolism ; *Synaptic Transmission ; Synaptic Vesicles/*physiology ; Synaptotagmin I/metabolism
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
    Standort Signatur Erwartet Verfügbarkeit
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  • 7
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    Heritable individual-specific and allele-specific chromatin signatures in humans (2010)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2010-03-20
    Beschreibung: The extent to which variation in chromatin structure and transcription factor binding may influence gene expression, and thus underlie or contribute to variation in phenotype, is unknown. To address this question, we cataloged both individual-to-individual variation and differences between homologous chromosomes within the same individual (allele-specific variation) in chromatin structure and transcription factor binding in lymphoblastoid cells derived from individuals of geographically diverse ancestry. Ten percent of active chromatin sites were individual-specific; a similar proportion were allele-specific. Both individual-specific and allele-specific sites were commonly transmitted from parent to child, which suggests that they are heritable features of the human genome. Our study shows that heritable chromatin status and transcription factor binding differ as a result of genetic variation and may underlie phenotypic variation in humans.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2929018/" 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/PMC2929018/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉McDaniell, Ryan -- Lee, Bum-Kyu -- Song, Lingyun -- Liu, Zheng -- Boyle, Alan P -- Erdos, Michael R -- Scott, Laura J -- Morken, Mario A -- Kucera, Katerina S -- Battenhouse, Anna -- Keefe, Damian -- Collins, Francis S -- Willard, Huntington F -- Lieb, Jason D -- Furey, Terrence S -- Crawford, Gregory E -- Iyer, Vishwanath R -- Birney, Ewan -- U54 HG004563/HG/NHGRI NIH HHS/ -- U54 HG004563-03/HG/NHGRI NIH HHS/ -- Z01 HG000024/HG/NHGRI NIH HHS/ -- Z01 HG000024-13/Intramural NIH HHS/ -- New York, N.Y. -- Science. 2010 Apr 9;328(5975):235-9. doi: 10.1126/science.1184655. Epub 2010 Mar 18.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Center for Systems and Synthetic Biology, Institute for Cellular and Molecular Biology, Section of Molecular Genetics and Microbiology, University of Texas, Austin, TX 78712, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20299549" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): African Continental Ancestry Group ; *Alleles ; Binding Sites ; Cell Line ; Chromatin/chemistry/*genetics/*metabolism ; Chromatin Immunoprecipitation ; Chromosomes, Human/genetics/metabolism ; Chromosomes, Human, X/genetics/metabolism ; Deoxyribonuclease I/metabolism ; European Continental Ancestry Group ; Female ; *Gene Expression Regulation ; *Genetic Variation ; Humans ; Male ; Nuclear Family ; Polymorphism, Single Nucleotide ; Protein Binding ; Regulatory Elements, Transcriptional ; Repressor Proteins/*metabolism ; Sequence Analysis, DNA ; Transcription Factors/*metabolism ; X Chromosome Inactivation
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
    Standort Signatur Erwartet Verfügbarkeit
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    Kinetic scaffolding mediated by a phospholipase C-beta and Gq signaling complex (2010)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2010-10-23
    Beschreibung: Transmembrane signals initiated by a broad range of extracellular stimuli converge on nodes that regulate phospholipase C (PLC)-dependent inositol lipid hydrolysis for signal propagation. We describe how heterotrimeric guanine nucleotide-binding proteins (G proteins) activate PLC-betas and in turn are deactivated by these downstream effectors. The 2.7-angstrom structure of PLC-beta3 bound to activated Galpha(q) reveals a conserved module found within PLC-betas and other effectors optimized for rapid engagement of activated G proteins. The active site of PLC-beta3 in the complex is occluded by an intramolecular plug that is likely removed upon G protein-dependent anchoring and orientation of the lipase at membrane surfaces. A second domain of PLC-beta3 subsequently accelerates guanosine triphosphate hydrolysis by Galpha(q), causing the complex to dissociate and terminate signal propagation. Mutations within this domain dramatically delay signal termination in vitro and in vivo. Consequently, this work suggests a dynamic catch-and-release mechanism used to sharpen spatiotemporal signals mediated by diverse sensory inputs.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3046049/" 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/PMC3046049/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Waldo, Gary L -- Ricks, Tiffany K -- Hicks, Stephanie N -- Cheever, Matthew L -- Kawano, Takeharu -- Tsuboi, Kazuhito -- Wang, Xiaoyue -- Montell, Craig -- Kozasa, Tohru -- Sondek, John -- Harden, T Kendall -- EY010852/EY/NEI NIH HHS/ -- GM074001/GM/NIGMS NIH HHS/ -- GM38213/GM/NIGMS NIH HHS/ -- GM57391/GM/NIGMS NIH HHS/ -- GM61454/GM/NIGMS NIH HHS/ -- R01 GM057391/GM/NIGMS NIH HHS/ -- R01 GM057391-13/GM/NIGMS NIH HHS/ -- R01 GM062299/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2010 Nov 12;330(6006):974-80. doi: 10.1126/science.1193438. Epub 2010 Oct 21.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pharmacology, University of North Carolina School of Medicine, Chapel Hill, NC 27599, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20966218" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Amino Acid Sequence ; Animals ; Catalytic Domain ; Crystallography, X-Ray ; Enzyme Activation ; GTP-Binding Protein alpha Subunits, Gq-G11/*chemistry/*metabolism ; Guanosine Triphosphate/metabolism ; Humans ; Hydrogen Bonding ; Hydrolysis ; Isoenzymes/chemistry/metabolism ; Kinetics ; Mice ; Models, Molecular ; Molecular Sequence Data ; Mutagenesis ; Phospholipase C beta/*chemistry/metabolism ; Protein Binding ; Protein Structure, Tertiary ; Recombinant Fusion Proteins/chemistry/metabolism ; Signal Transduction
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
    Standort Signatur Erwartet Verfügbarkeit
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    Peptidomimetic antibiotics target outer-membrane biogenesis in Pseudomonas aeruginosa (2010)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2010-02-20
    Beschreibung: Antibiotics with new mechanisms of action are urgently required to combat the growing health threat posed by resistant pathogenic microorganisms. We synthesized a family of peptidomimetic antibiotics based on the antimicrobial peptide protegrin I. Several rounds of optimization gave a lead compound that was active in the nanomolar range against Gram-negative Pseudomonas spp., but was largely inactive against other Gram-negative and Gram-positive bacteria. Biochemical and genetic studies showed that the peptidomimetics had a non-membrane-lytic mechanism of action and identified a homolog of the beta-barrel protein LptD (Imp/OstA), which functions in outer-membrane biogenesis, as a cellular target. The peptidomimetic showed potent antimicrobial activity in a mouse septicemia infection model. Drug-resistant strains of Pseudomonas are a serious health problem, so this family of antibiotics may have important therapeutic applications.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Srinivas, Nityakalyani -- Jetter, Peter -- Ueberbacher, Bernhard J -- Werneburg, Martina -- Zerbe, Katja -- Steinmann, Jessica -- Van der Meijden, Benjamin -- Bernardini, Francesca -- Lederer, Alexander -- Dias, Ricardo L A -- Misson, Pauline E -- Henze, Heiko -- Zumbrunn, Jurg -- Gombert, Frank O -- Obrecht, Daniel -- Hunziker, Peter -- Schauer, Stefan -- Ziegler, Urs -- Kach, Andres -- Eberl, Leo -- Riedel, Kathrin -- DeMarco, Steven J -- Robinson, John A -- New York, N.Y. -- Science. 2010 Feb 19;327(5968):1010-3. doi: 10.1126/science.1182749.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Chemistry Department, University of Zurich, Winterthurerstrasse 190, 8057 Zurich, Switzerland.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20167788" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Anti-Bacterial Agents/chemical synthesis/metabolism/*pharmacology ; Antimicrobial Cationic Peptides/chemistry ; Bacterial Outer Membrane Proteins/chemistry/genetics/*metabolism ; Cell Membrane/*metabolism ; Drug Design ; Drug Resistance, Bacterial/genetics ; Genes, Bacterial ; Lipopolysaccharides/metabolism ; Mice ; Microbial Sensitivity Tests ; Molecular Mimicry ; Mutation ; Peptide Library ; Peptides/chemical synthesis/chemistry/metabolism/*pharmacology ; Protein Structure, Tertiary ; Pseudomonas Infections/drug therapy/microbiology ; Pseudomonas aeruginosa/*drug effects/growth & ; development/*metabolism/ultrastructure ; Sepsis/drug therapy/microbiology
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
    Standort Signatur Erwartet Verfügbarkeit
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    Noise can induce bimodality in positive transcriptional feedback loops without bistability (2010)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2010-02-27
    Beschreibung: Transcriptional positive-feedback loops are widely associated with bistability, characterized by two stable expression states that allow cells to respond to analog signals in a digital manner. Using a synthetic system in budding yeast, we show that positive feedback involving a promoter with multiple transcription factor (TF) binding sites can induce a steady-state bimodal response without cooperative binding of the TF. Deterministic models of this system do not predict bistability. Rather, the bimodal response requires a short-lived TF and stochastic fluctuations in the TF's expression. Multiple binding sites provide these fluctuations. Because many promoters possess multiple binding sites and many TFs are unstable, positive-feedback loops in gene regulatory networks may exhibit bimodal responses, but not necessarily because of deterministic bistability, as is commonly thought.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉To, Tsz-Leung -- Maheshri, Narendra -- New York, N.Y. -- Science. 2010 Feb 26;327(5969):1142-5. doi: 10.1126/science.1178962.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Chemical Engineering, 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/20185727" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Active Transport, Cell Nucleus ; Binding Sites ; Cell Nucleus/metabolism ; Doxycycline/metabolism ; Feedback, Physiological ; *Gene Expression Regulation, Fungal ; *Gene Regulatory Networks ; Models, Genetic ; Models, Statistical ; Promoter Regions, Genetic ; Protein Stability ; Recombinant Fusion Proteins/metabolism ; Saccharomyces cerevisiae/*genetics/metabolism ; Saccharomyces cerevisiae Proteins/chemistry/genetics/metabolism ; Stochastic Processes ; Transcription Factors/chemistry/genetics/*metabolism ; *Transcription, Genetic
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
    Standort Signatur Erwartet Verfügbarkeit
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