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  • Articles  (612)
  • Binding Sites  (612)
  • American Association for the Advancement of Science (AAAS)  (498)
  • Nature Publishing Group (NPG)  (114)
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  • Natural Sciences in General  (612)
  • Chemistry and Pharmacology  (612)
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  • Articles  (612)
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  • American Association for the Advancement of Science (AAAS)  (498)
  • Nature Publishing Group (NPG)  (114)
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  • 1
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    Peptide antagonists of the human estrogen receptor (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-07-31
    Description: Estrogen receptor alpha transcriptional activity is regulated by distinct conformational states that are the result of ligand binding. Phage display was used to identify peptides that interact specifically with either estradiol- or tamoxifen-activated estrogen receptor alpha. When these peptides were coexpressed with estrogen receptor alpha in cells, they functioned as ligand-specific antagonists, indicating that estradiol-agonist and tamoxifen-partial agonist activities do not occur by the same mechanism. The ability to regulate estrogen receptor alpha transcriptional activity by targeting sites outside of the ligand-binding pocket has implications for the development of estrogen receptor alpha antagonists for the treatment of tamoxifen-refractory breast cancers.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Norris, J D -- Paige, L A -- Christensen, D J -- Chang, C Y -- Huacani, M R -- Fan, D -- Hamilton, P T -- Fowlkes, D M -- McDonnell, D P -- DK48807/DK/NIDDK NIH HHS/ -- New York, N.Y. -- Science. 1999 Jul 30;285(5428):744-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Duke University Medical Center, Department of Pharmacology and Cancer Biology, Durham, NC 27710, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10426998" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Binding Sites ; Estradiol/metabolism/*pharmacology ; Estrogen Antagonists/*pharmacology ; Estrogen Receptor alpha ; Humans ; Ligands ; Mifepristone/pharmacology ; Molecular Sequence Data ; Peptide Library ; Peptides/metabolism/*pharmacology ; Receptors, Cytoplasmic and Nuclear/metabolism ; Receptors, Estrogen/agonists/*antagonists & inhibitors/chemistry/*metabolism ; Recombinant Fusion Proteins/pharmacology ; Tamoxifen/metabolism/*pharmacology ; Transcription Factor AP-1/genetics/metabolism ; Transcription, Genetic/drug effects
    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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  • 2
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    Receptor for motilin identified in the human gastrointestinal system (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-06-26
    Description: Motilin is a 22-amino acid peptide hormone expressed throughout the gastrointestinal (GI) tract of humans and other species. It affects gastric motility by stimulating interdigestive antrum and duodenal contractions. A heterotrimeric guanosine triphosphate-binding protein (G protein)-coupled receptor for motilin was isolated from human stomach, and its amino acid sequence was found to be 52 percent identical to the human receptor for growth hormone secretagogues. The macrolide antibiotic erythromycin also interacted with the cloned motilin receptor, providing a molecular basis for its effects on the human GI tract. The motilin receptor is expressed in enteric neurons of the human duodenum and colon. Development of motilin receptor agonists and antagonists may be useful in the treatment of multiple disorders of GI motility.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Feighner, S D -- Tan, C P -- McKee, K K -- Palyha, O C -- Hreniuk, D L -- Pong, S S -- Austin, C P -- Figueroa, D -- MacNeil, D -- Cascieri, M A -- Nargund, R -- Bakshi, R -- Abramovitz, M -- Stocco, R -- Kargman, S -- O'Neill, G -- Van Der Ploeg, L H -- Evans, J -- Patchett, A A -- Smith, R G -- Howard, A D -- New York, N.Y. -- Science. 1999 Jun 25;284(5423):2184-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Metabolic Disorders, Department of Medicinal Chemistry, Merck Research Laboratories, Building RY-80Y-265, 126 East Lincoln Avenue, Rahway, NJ 07065, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10381885" target="_blank"〉PubMed〈/a〉
    Keywords: Alternative Splicing ; Amino Acid Sequence ; Base Sequence ; Binding Sites ; Calcium/metabolism ; Cell Line ; Chromosome Mapping ; Chromosomes, Human, Pair 13 ; Cloning, Molecular ; Colon/*metabolism ; Erythromycin/metabolism ; GTP-Binding Proteins/metabolism ; Humans ; In Situ Hybridization ; Intestine, Small/*metabolism ; Ligands ; Molecular Sequence Data ; Motilin/analogs & derivatives/*metabolism ; Receptors, Gastrointestinal Hormone/*chemistry/*genetics/metabolism ; Receptors, Neuropeptide/*chemistry/*genetics/metabolism ; Stomach/*metabolism ; Thyroid Gland/metabolism ; Transfection
    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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    Cardiac myosin activation: a potential therapeutic approach for systolic heart failure (2011)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2011-03-19
    Description: Decreased cardiac contractility is a central feature of systolic heart failure. Existing drugs increase cardiac contractility indirectly through signaling cascades but are limited by their mechanism-related adverse effects. To avoid these limitations, we previously developed omecamtiv mecarbil, a small-molecule, direct activator of cardiac myosin. Here, we show that it binds to the myosin catalytic domain and operates by an allosteric mechanism to increase the transition rate of myosin into the strongly actin-bound force-generating state. Paradoxically, it inhibits adenosine 5'-triphosphate turnover in the absence of actin, which suggests that it stabilizes an actin-bound conformation of myosin. In animal models, omecamtiv mecarbil increases cardiac function by increasing the duration of ejection without changing the rates of contraction. Cardiac myosin activation may provide a new therapeutic approach for systolic heart failure.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4090309/" 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/PMC4090309/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Malik, Fady I -- Hartman, James J -- Elias, Kathleen A -- Morgan, Bradley P -- Rodriguez, Hector -- Brejc, Katjusa -- Anderson, Robert L -- Sueoka, Sandra H -- Lee, Kenneth H -- Finer, Jeffrey T -- Sakowicz, Roman -- Baliga, Ramesh -- Cox, David R -- Garard, Marc -- Godinez, Guillermo -- Kawas, Raja -- Kraynack, Erica -- Lenzi, David -- Lu, Pu Ping -- Muci, Alexander -- Niu, Congrong -- Qian, Xiangping -- Pierce, Daniel W -- Pokrovskii, Maria -- Suehiro, Ion -- Sylvester, Sheila -- Tochimoto, Todd -- Valdez, Corey -- Wang, Wenyue -- Katori, Tatsuo -- Kass, David A -- Shen, You-Tang -- Vatner, Stephen F -- Morgans, David J -- 1-R43-HL-66647-1/HL/NHLBI NIH HHS/ -- R01 HL106511/HL/NHLBI NIH HHS/ -- R43 HL066647/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 2011 Mar 18;331(6023):1439-43. doi: 10.1126/science.1200113.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Preclinical Research and Development, Cytokinetics, Inc., South San Francisco, CA 94080, USA. fmalik@cytokinetics.com〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21415352" target="_blank"〉PubMed〈/a〉
    Keywords: Actin Cytoskeleton/metabolism ; Actins/metabolism ; Adenosine Triphosphatases/metabolism ; Adenosine Triphosphate/metabolism ; Adrenergic beta-Agonists/pharmacology ; Allosteric Regulation ; Animals ; Binding Sites ; Calcium/metabolism ; Cardiac Myosins/chemistry/*metabolism ; Cardiac Output/drug effects ; Dogs ; Female ; Heart Failure, Systolic/*drug therapy/physiopathology ; Isoproterenol/pharmacology ; Male ; Myocardial Contraction/*drug effects ; Myocytes, Cardiac/*drug effects/physiology ; Phosphates/metabolism ; Protein Binding ; Protein Conformation ; Protein Isoforms/chemistry/metabolism ; Rats ; Rats, Sprague-Dawley ; Urea/*analogs & derivatives/chemistry/metabolism/pharmacology ; Ventricular Function, Left/drug effects
    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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  • 4
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    Sequence and structural convergence of broad and potent HIV antibodies that mimic CD4 binding (2011)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2011-07-19
    Description: Passive transfer of broadly neutralizing HIV antibodies can prevent infection, which suggests that vaccines that elicit such antibodies would be protective. Thus far, however, few broadly neutralizing HIV antibodies that occur naturally have been characterized. To determine whether these antibodies are part of a larger group of related molecules, we cloned 576 new HIV antibodies from four unrelated individuals. All four individuals produced expanded clones of potent broadly neutralizing CD4-binding-site antibodies that mimic binding to CD4. Despite extensive hypermutation, the new antibodies shared a consensus sequence of 68 immunoglobulin H (IgH) chain amino acids and arise independently from two related IgH genes. Comparison of the crystal structure of one of the antibodies to the broadly neutralizing antibody VRC01 revealed conservation of the contacts to the HIV spike.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3351836/" 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/PMC3351836/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Scheid, Johannes F -- Mouquet, Hugo -- Ueberheide, Beatrix -- Diskin, Ron -- Klein, Florian -- Oliveira, Thiago Y K -- Pietzsch, John -- Fenyo, David -- Abadir, Alexander -- Velinzon, Klara -- Hurley, Arlene -- Myung, Sunnie -- Boulad, Farid -- Poignard, Pascal -- Burton, Dennis R -- Pereyra, Florencia -- Ho, David D -- Walker, Bruce D -- Seaman, Michael S -- Bjorkman, Pamela J -- Chait, Brian T -- Nussenzweig, Michel C -- P01 AI081677/AI/NIAID NIH HHS/ -- P30 AI060354/AI/NIAID NIH HHS/ -- R01 AI033292/AI/NIAID NIH HHS/ -- RR00862/RR/NCRR NIH HHS/ -- RR022220/RR/NCRR NIH HHS/ -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2011 Sep 16;333(6049):1633-7. doi: 10.1126/science.1207227. Epub 2011 Jul 14.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Molecular Immunology, The Rockefeller University, New York, NY 10065, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21764753" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Antibodies, Neutralizing/*chemistry/*immunology/metabolism ; Antibody Affinity ; Antibody Specificity ; Antigens, CD4/immunology/*metabolism ; Binding Sites ; Binding Sites, Antibody ; Cloning, Molecular ; Consensus Sequence ; Crystallography, X-Ray ; Genes, Immunoglobulin Heavy Chain ; HIV Antibodies/*chemistry/*immunology/metabolism ; HIV Envelope Protein gp120/chemistry/*immunology/metabolism ; HIV Infections/immunology ; Humans ; Immunoglobulin Fab Fragments/chemistry ; Immunoglobulin Heavy Chains/chemistry ; Immunoglobulin Light Chains/chemistry ; Molecular Mimicry ; Molecular Sequence Data ; Mutation ; Protein Conformation
    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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  • 5
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    The Mycobacterium tuberculosis regulatory network and hypoxia (2013)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2013-07-05
    Description: We have taken the first steps towards a complete reconstruction of the Mycobacterium tuberculosis regulatory network based on ChIP-Seq and combined this reconstruction with system-wide profiling of messenger RNAs, proteins, metabolites and lipids during hypoxia and re-aeration. Adaptations to hypoxia are thought to have a prominent role in M. tuberculosis pathogenesis. Using ChIP-Seq combined with expression data from the induction of the same factors, we have reconstructed a draft regulatory network based on 50 transcription factors. This network model revealed a direct interconnection between the hypoxic response, lipid catabolism, lipid anabolism and the production of cell wall lipids. As a validation of this model, in response to oxygen availability we observe substantial alterations in lipid content and changes in gene expression and metabolites in corresponding metabolic pathways. The regulatory network reveals transcription factors underlying these changes, allows us to computationally predict expression changes, and indicates that Rv0081 is a regulatory hub.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4087036/" 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/PMC4087036/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Galagan, James E -- Minch, Kyle -- Peterson, Matthew -- Lyubetskaya, Anna -- Azizi, Elham -- Sweet, Linsday -- Gomes, Antonio -- Rustad, Tige -- Dolganov, Gregory -- Glotova, Irina -- Abeel, Thomas -- Mahwinney, Chris -- Kennedy, Adam D -- Allard, Rene -- Brabant, William -- Krueger, Andrew -- Jaini, Suma -- Honda, Brent -- Yu, Wen-Han -- Hickey, Mark J -- Zucker, Jeremy -- Garay, Christopher -- Weiner, Brian -- Sisk, Peter -- Stolte, Christian -- Winkler, Jessica K -- Van de Peer, Yves -- Iazzetti, Paul -- Camacho, Diogo -- Dreyfuss, Jonathan -- Liu, Yang -- Dorhoi, Anca -- Mollenkopf, Hans-Joachim -- Drogaris, Paul -- Lamontagne, Julie -- Zhou, Yiyong -- Piquenot, Julie -- Park, Sang Tae -- Raman, Sahadevan -- Kaufmann, Stefan H E -- Mohney, Robert P -- Chelsky, Daniel -- Moody, D Branch -- Sherman, David R -- Schoolnik, Gary K -- HHSN272200800059C/AI/NIAID NIH HHS/ -- HHSN272200800059C/PHS HHS/ -- R01 AI 071155/AI/NIAID NIH HHS/ -- R01 AI071155/AI/NIAID NIH HHS/ -- U19 AI 076217/AI/NIAID NIH HHS/ -- U19 AI076217/AI/NIAID NIH HHS/ -- England -- Nature. 2013 Jul 11;499(7457):178-83. doi: 10.1038/nature12337. Epub 2013 Jul 3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biomedical Engineering, Boston University, Boston, Massachusetts 02215, USA. jgalag@bu.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/23823726" target="_blank"〉PubMed〈/a〉
    Keywords: Adaptation, Physiological ; Anoxia/*genetics/metabolism ; Bacterial Proteins/genetics/metabolism ; Binding Sites ; Chromatin Immunoprecipitation ; Gene Expression Profiling ; *Gene Regulatory Networks/genetics ; Genomics ; Lipid Metabolism/genetics ; Metabolic Networks and Pathways/*genetics ; Models, Biological ; Mycobacterium tuberculosis/drug effects/*genetics/*metabolism/physiology ; Oxygen/pharmacology ; Proteolysis ; RNA, Messenger/genetics/metabolism ; Reproducibility of Results ; Sequence Analysis, DNA ; Transcription Factors/genetics/metabolism ; Tuberculosis/metabolism/microbiology
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Published by Nature Publishing Group (NPG)
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  • 6
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    Identification of functional elements and regulatory circuits by Drosophila modENCODE (2010)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2010-12-24
    Description: 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〉
    Keywords: 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
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 7
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    Transcribed enhancers lead waves of coordinated transcription in transitioning mammalian cells (2015)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2015-02-14
    Description: Although it is generally accepted that cellular differentiation requires changes to transcriptional networks, dynamic regulation of promoters and enhancers at specific sets of genes has not been previously studied en masse. Exploiting the fact that active promoters and enhancers are transcribed, we simultaneously measured their activity in 19 human and 14 mouse time courses covering a wide range of cell types and biological stimuli. Enhancer RNAs, then messenger RNAs encoding transcription factors, dominated the earliest responses. Binding sites for key lineage transcription factors were simultaneously overrepresented in enhancers and promoters active in each cellular system. Our data support a highly generalizable model in which enhancer transcription is the earliest event in successive waves of transcriptional change during cellular differentiation or activation.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4681433/" 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/PMC4681433/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Arner, Erik -- Daub, Carsten O -- Vitting-Seerup, Kristoffer -- Andersson, Robin -- Lilje, Berit -- Drablos, Finn -- Lennartsson, Andreas -- Ronnerblad, Michelle -- Hrydziuszko, Olga -- Vitezic, Morana -- Freeman, Tom C -- Alhendi, Ahmad M N -- Arner, Peter -- Axton, Richard -- Baillie, J Kenneth -- Beckhouse, Anthony -- Bodega, Beatrice -- Briggs, James -- Brombacher, Frank -- Davis, Margaret -- Detmar, Michael -- Ehrlund, Anna -- Endoh, Mitsuhiro -- Eslami, Afsaneh -- Fagiolini, Michela -- Fairbairn, Lynsey -- Faulkner, Geoffrey J -- Ferrai, Carmelo -- Fisher, Malcolm E -- Forrester, Lesley -- Goldowitz, Daniel -- Guler, Reto -- Ha, Thomas -- Hara, Mitsuko -- Herlyn, Meenhard -- Ikawa, Tomokatsu -- Kai, Chieko -- Kawamoto, Hiroshi -- Khachigian, Levon M -- Klinken, S Peter -- Kojima, Soichi -- Koseki, Haruhiko -- Klein, Sarah -- Mejhert, Niklas -- Miyaguchi, Ken -- Mizuno, Yosuke -- Morimoto, Mitsuru -- Morris, Kelly J -- Mummery, Christine -- Nakachi, Yutaka -- Ogishima, Soichi -- Okada-Hatakeyama, Mariko -- Okazaki, Yasushi -- Orlando, Valerio -- Ovchinnikov, Dmitry -- Passier, Robert -- Patrikakis, Margaret -- Pombo, Ana -- Qin, Xian-Yang -- Roy, Sugata -- Sato, Hiroki -- Savvi, Suzana -- Saxena, Alka -- Schwegmann, Anita -- Sugiyama, Daisuke -- Swoboda, Rolf -- Tanaka, Hiroshi -- Tomoiu, Andru -- Winteringham, Louise N -- Wolvetang, Ernst -- Yanagi-Mizuochi, Chiyo -- Yoneda, Misako -- Zabierowski, Susan -- Zhang, Peter -- Abugessaisa, Imad -- Bertin, Nicolas -- Diehl, Alexander D -- Fukuda, Shiro -- Furuno, Masaaki -- Harshbarger, Jayson -- Hasegawa, Akira -- Hori, Fumi -- Ishikawa-Kato, Sachi -- Ishizu, Yuri -- Itoh, Masayoshi -- Kawashima, Tsugumi -- Kojima, Miki -- Kondo, Naoto -- Lizio, Marina -- Meehan, Terrence F -- Mungall, Christopher J -- Murata, Mitsuyoshi -- Nishiyori-Sueki, Hiromi -- Sahin, Serkan -- Nagao-Sato, Sayaka -- Severin, Jessica -- de Hoon, Michiel J L -- Kawai, Jun -- Kasukawa, Takeya -- Lassmann, Timo -- Suzuki, Harukazu -- Kawaji, Hideya -- Summers, Kim M -- Wells, Christine -- FANTOM Consortium -- Hume, David A -- Forrest, Alistair R R -- Sandelin, Albin -- Carninci, Piero -- Hayashizaki, Yoshihide -- P30 CA010815/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 2015 Feb 27;347(6225):1010-4. doi: 10.1126/science.1259418. Epub 2015 Feb 12.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25678556" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Binding Sites ; Cattle ; Cell Differentiation/*genetics ; Dogs ; *Enhancer Elements, Genetic ; *Gene Expression Regulation, Developmental ; Mice ; RNA, Messenger/genetics/metabolism ; Rats ; Stem Cells/*cytology/metabolism ; Transcription Factors/*metabolism ; *Transcription, Genetic
    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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  • 8
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    A natural product that lowers cholesterol as an antagonist ligand for FXR (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-05-04
    Description: Extracts of the resin of the guggul tree (Commiphora mukul) lower LDL (low-density lipoprotein) cholesterol levels in humans. The plant sterol guggulsterone [4,17(20)-pregnadiene-3,16-dione] is the active agent in this extract. We show that guggulsterone is a highly efficacious antagonist of the farnesoid X receptor (FXR), a nuclear hormone receptor that is activated by bile acids. Guggulsterone treatment decreases hepatic cholesterol in wild-type mice fed a high-cholesterol diet but is not effective in FXR-null mice. Thus, we propose that inhibition of FXR activation is the basis for the cholesterol-lowering activity of guggulsterone. Other natural products with specific biologic effects may modulate the activity of FXR or other relatively promiscuous nuclear hormone receptors.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Urizar, Nancy L -- Liverman, Amy B -- Dodds, D'Nette T -- Silva, Frank Valentin -- Ordentlich, Peter -- Yan, Yingzhuo -- Gonzalez, Frank J -- Heyman, Richard A -- Mangelsdorf, David J -- Moore, David D -- New York, N.Y. -- Science. 2002 May 31;296(5573):1703-6. Epub 2002 May 2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular and Cellular Biology, Baylor College of Medicine, 1 Baylor Plaza, Houston, TX 77030, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11988537" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Binding Sites ; Caco-2 Cells ; Carrier Proteins/genetics/metabolism ; Cells, Cultured ; Chenodeoxycholic Acid/pharmacology ; Cholesterol/*metabolism ; Cholesterol, Dietary/administration & dosage ; DNA/metabolism ; DNA-Binding Proteins/*antagonists & inhibitors/chemistry/genetics/*metabolism ; Hepatocytes/metabolism ; Histone Acetyltransferases ; Humans ; *Hydroxysteroid Dehydrogenases ; Hypolipidemic Agents/metabolism/*pharmacology ; Ligands ; Liver/metabolism ; *Membrane Glycoproteins ; Mice ; Nuclear Receptor Coactivator 1 ; Pregnenediones/metabolism/*pharmacology ; Promoter Regions, Genetic ; Protein Structure, Tertiary ; Receptors, Cytoplasmic and Nuclear/antagonists & inhibitors/genetics/metabolism ; Receptors, Steroid/antagonists & inhibitors/metabolism ; Transcription Factors/*antagonists & inhibitors/chemistry/genetics/*metabolism ; Transcriptional Activation/drug effects ; Transfection ; Tumor Cells, Cultured
    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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  • 9
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    Type IIA topoisomerase inhibition by a new class of antibacterial agents (2010)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2010-08-06
    Description: Despite the success of genomics in identifying new essential bacterial genes, there is a lack of sustainable leads in antibacterial drug discovery to address increasing multidrug resistance. Type IIA topoisomerases cleave and religate DNA to regulate DNA topology and are a major class of antibacterial and anticancer drug targets, yet there is no well developed structural basis for understanding drug action. Here we report the 2.1 A crystal structure of a potent, new class, broad-spectrum antibacterial agent in complex with Staphylococcus aureus DNA gyrase and DNA, showing a new mode of inhibition that circumvents fluoroquinolone resistance in this clinically important drug target. The inhibitor 'bridges' the DNA and a transient non-catalytic pocket on the two-fold axis at the GyrA dimer interface, and is close to the active sites and fluoroquinolone binding sites. In the inhibitor complex the active site seems poised to cleave the DNA, with a single metal ion observed between the TOPRIM (topoisomerase/primase) domain and the scissile phosphate. This work provides new insights into the mechanism of topoisomerase action and a platform for structure-based drug design of a new class of antibacterial agents against a clinically proven, but conformationally flexible, enzyme class.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bax, Benjamin D -- Chan, Pan F -- Eggleston, Drake S -- Fosberry, Andrew -- Gentry, Daniel R -- Gorrec, Fabrice -- Giordano, Ilaria -- Hann, Michael M -- Hennessy, Alan -- Hibbs, Martin -- Huang, Jianzhong -- Jones, Emma -- Jones, Jo -- Brown, Kristin Koretke -- Lewis, Ceri J -- May, Earl W -- Saunders, Martin R -- Singh, Onkar -- Spitzfaden, Claus E -- Shen, Carol -- Shillings, Anthony -- Theobald, Andrew J -- Wohlkonig, Alexandre -- Pearson, Neil D -- Gwynn, Michael N -- Wellcome Trust/United Kingdom -- England -- Nature. 2010 Aug 19;466(7309):935-40. doi: 10.1038/nature09197. Epub 2010 Aug 4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Molecular Discovery Research, GlaxoSmithKline, Medicines Research Centre, Gunnels Wood Road, Stevenage, Hertfordshire, SG1 2NY, UK. benjamin.d.bax@gsk.com〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20686482" target="_blank"〉PubMed〈/a〉
    Keywords: Anti-Bacterial Agents/*chemistry/metabolism/*pharmacology ; Apoenzymes/chemistry/metabolism ; Arginine/metabolism ; Aspartic Acid/metabolism ; Binding Sites ; Catalytic Domain ; Ciprofloxacin/chemistry/metabolism ; Crystallography, X-Ray ; DNA/chemistry/metabolism ; DNA Cleavage ; DNA Gyrase/*chemistry/metabolism ; DNA, Superhelical/chemistry/metabolism ; Drug Design ; Drug Resistance ; Escherichia coli/enzymology ; Manganese/metabolism ; Models, Molecular ; Protein Conformation ; Quinolines/*chemistry/metabolism/*pharmacology ; Quinolones/chemistry/metabolism ; Staphylococcus aureus/*enzymology ; Structure-Activity Relationship ; *Topoisomerase II Inhibitors
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Published by Nature Publishing Group (NPG)
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  • 10
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    Genetic predisposition to neuroblastoma mediated by a LMO1 super-enhancer polymorphism (2015)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2015-11-13
    Description: Neuroblastoma is a paediatric malignancy that typically arises in early childhood, and is derived from the developing sympathetic nervous system. Clinical phenotypes range from localized tumours with excellent outcomes to widely metastatic disease in which long-term survival is approximately 40% despite intensive therapy. A previous genome-wide association study identified common polymorphisms at the LMO1 gene locus that are highly associated with neuroblastoma susceptibility and oncogenic addiction to LMO1 in the tumour cells. Here we investigate the causal DNA variant at this locus and the mechanism by which it leads to neuroblastoma tumorigenesis. We first imputed all possible genotypes across the LMO1 locus and then mapped highly associated single nucleotide polymorphism (SNPs) to areas of chromatin accessibility, evolutionary conservation and transcription factor binding sites. We show that SNP rs2168101 G〉T is the most highly associated variant (combined P = 7.47 x 10(-29), odds ratio 0.65, 95% confidence interval 0.60-0.70), and resides in a super-enhancer defined by extensive acetylation of histone H3 lysine 27 within the first intron of LMO1. The ancestral G allele that is associated with tumour formation resides in a conserved GATA transcription factor binding motif. We show that the newly evolved protective TATA allele is associated with decreased total LMO1 expression (P = 0.028) in neuroblastoma primary tumours, and ablates GATA3 binding (P 〈 0.0001). We demonstrate allelic imbalance favouring the G-containing strand in tumours heterozygous for this SNP, as demonstrated both by RNA sequencing (P 〈 0.0001) and reporter assays (P = 0.002). These findings indicate that a recently evolved polymorphism within a super-enhancer element in the first intron of LMO1 influences neuroblastoma susceptibility through differential GATA transcription factor binding and direct modulation of LMO1 expression in cis, and this leads to an oncogenic dependency in tumour cells.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4775078/" 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/PMC4775078/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Oldridge, Derek A -- Wood, Andrew C -- Weichert-Leahey, Nina -- Crimmins, Ian -- Sussman, Robyn -- Winter, Cynthia -- McDaniel, Lee D -- Diamond, Maura -- Hart, Lori S -- Zhu, Shizhen -- Durbin, Adam D -- Abraham, Brian J -- Anders, Lars -- Tian, Lifeng -- Zhang, Shile -- Wei, Jun S -- Khan, Javed -- Bramlett, Kelli -- Rahman, Nazneen -- Capasso, Mario -- Iolascon, Achille -- Gerhard, Daniela S -- Guidry Auvil, Jaime M -- Young, Richard A -- Hakonarson, Hakon -- Diskin, Sharon J -- Look, A Thomas -- Maris, John M -- 100210/Wellcome Trust/United Kingdom -- 100210/Z/12/Z/Wellcome Trust/United Kingdom -- 1K99CA178189/CA/NCI NIH HHS/ -- R00-CA151869/CA/NCI NIH HHS/ -- R01 CA124709/CA/NCI NIH HHS/ -- R01 CA180692/CA/NCI NIH HHS/ -- R01-CA109901/CA/NCI NIH HHS/ -- R01-CA124709/CA/NCI NIH HHS/ -- R01-CA180692/CA/NCI NIH HHS/ -- RC1MD004418/MD/NIMHD NIH HHS/ -- T32 HG000046/HG/NHGRI NIH HHS/ -- T32-HG000046/HG/NHGRI NIH HHS/ -- England -- Nature. 2015 Dec 17;528(7582):418-21. doi: 10.1038/nature15540. Epub 2015 Nov 11.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Oncology and Center for Childhood Cancer Research, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania 19104, USA. ; Medical Scientist Training Program, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA. ; Department of Molecular Medicine and Pathology, University of Auckland, Auckland, Auckland Region 1142, New Zealand. ; Department of Pediatric Oncology, Dana Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts 02215, USA. ; Division of Pediatric Hematology/Oncology, Boston Children's Hospital, Boston, Massachusetts 02115, USA. ; Department of Biochemistry and Molecular Biology, Mayo Clinic, Rochester, Minnesota 55905, USA. ; Whitehead Institute for Biomedical Research and MIT, Boston, Massachusetts 02142, USA. ; Center for Applied Genomics, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania 19104, USA. ; Pediatric Oncology Branch, National Cancer Institute, Bethesda, Maryland 20892, USA. ; Thermo Fisher Scientific, Austin, Texas 78744, USA. ; The Institute of Cancer Research, London SM2 5NG, UK. ; University of Naples Federico II, 80131 Naples, Italy. ; CEINGE Biotecnologie Avanzate, 80131 Naples, Italy. ; Office of Cancer Genomics, National Cancer Institute, Bethesda, Maryland 20892, USA. ; Department of Pediatrics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA. ; Abramson Family Cancer Research Institute, Philadelphia, Pennsylvania 19104, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26560027" target="_blank"〉PubMed〈/a〉
    Keywords: Acetylation ; Alleles ; Allelic Imbalance ; Binding Sites ; DNA-Binding Proteins/*genetics ; Enhancer Elements, Genetic/*genetics ; Epigenomics ; GATA3 Transcription Factor/metabolism ; Gene Expression Regulation, Neoplastic/genetics ; Genetic Predisposition to Disease/*genetics ; Genome-Wide Association Study ; Genotype ; Histones/chemistry/metabolism ; Humans ; Introns/genetics ; LIM Domain Proteins/*genetics ; Lysine/metabolism ; Neuroblastoma/*genetics ; Organ Specificity ; Polymorphism, Single Nucleotide/*genetics ; Reproducibility of Results ; Transcription Factors/*genetics
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Published by Nature Publishing Group (NPG)
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