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  • 1
    Publication Date: 2011-12-23
    Description: Human immunodeficiency virus (HIV) has a small genome and therefore relies heavily on the host cellular machinery to replicate. Identifying which host proteins and complexes come into physical contact with the viral proteins is crucial for a comprehensive understanding of how HIV rewires the host's cellular machinery during the course of infection. Here we report the use of affinity tagging and purification mass spectrometry to determine systematically the physical interactions of all 18 HIV-1 proteins and polyproteins with host proteins in two different human cell lines (HEK293 and Jurkat). Using a quantitative scoring system that we call MiST, we identified with high confidence 497 HIV-human protein-protein interactions involving 435 individual human proteins, with approximately 40% of the interactions being identified in both cell types. We found that the host proteins hijacked by HIV, especially those found interacting in both cell types, are highly conserved across primates. We uncovered a number of host complexes targeted by viral proteins, including the finding that HIV protease cleaves eIF3d, a subunit of eukaryotic translation initiation factor 3. This host protein is one of eleven identified in this analysis that act to inhibit HIV replication. This data set facilitates a more comprehensive and detailed understanding of how the host machinery is manipulated during the course of HIV infection.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3310911/" 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/PMC3310911/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Jager, Stefanie -- Cimermancic, Peter -- Gulbahce, Natali -- Johnson, Jeffrey R -- McGovern, Kathryn E -- Clarke, Starlynn C -- Shales, Michael -- Mercenne, Gaelle -- Pache, Lars -- Li, Kathy -- Hernandez, Hilda -- Jang, Gwendolyn M -- Roth, Shoshannah L -- Akiva, Eyal -- Marlett, John -- Stephens, Melanie -- D'Orso, Ivan -- Fernandes, Jason -- Fahey, Marie -- Mahon, Cathal -- O'Donoghue, Anthony J -- Todorovic, Aleksandar -- Morris, John H -- Maltby, David A -- Alber, Tom -- Cagney, Gerard -- Bushman, Frederic D -- Young, John A -- Chanda, Sumit K -- Sundquist, Wesley I -- Kortemme, Tanja -- Hernandez, Ryan D -- Craik, Charles S -- Burlingame, Alma -- Sali, Andrej -- Frankel, Alan D -- Krogan, Nevan J -- P01 AI090935/AI/NIAID NIH HHS/ -- P01 AI090935-02/AI/NIAID NIH HHS/ -- P01 GM073732-05/GM/NIGMS NIH HHS/ -- P41 GM103481/GM/NIGMS NIH HHS/ -- P41 RR001081/RR/NCRR NIH HHS/ -- P41RR001614/RR/NCRR NIH HHS/ -- P50 GM081879/GM/NIGMS NIH HHS/ -- P50 GM081879-02/GM/NIGMS NIH HHS/ -- P50 GM082250/GM/NIGMS NIH HHS/ -- P50 GM082250-05/GM/NIGMS NIH HHS/ -- P50GM081879/GM/NIGMS NIH HHS/ -- P50GM082545/GM/NIGMS NIH HHS/ -- U54 RR022220/RR/NCRR NIH HHS/ -- England -- Nature. 2011 Dec 21;481(7381):365-70. doi: 10.1038/nature10719.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cellular and Molecular Pharmacology, University of California, San Francisco, California 94158, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22190034" target="_blank"〉PubMed〈/a〉
    Keywords: Affinity Labels ; Amino Acid Sequence ; Conserved Sequence ; Eukaryotic Initiation Factor-3/chemistry/metabolism ; HEK293 Cells ; HIV Infections/metabolism/virology ; HIV Protease/metabolism ; HIV-1/*chemistry/*metabolism/physiology ; *Host-Pathogen Interactions ; Human Immunodeficiency Virus Proteins/analysis/chemistry/isolation & ; purification/*metabolism ; Humans ; Immunoprecipitation ; Jurkat Cells ; Mass Spectrometry ; Protein Binding ; Protein Interaction Mapping/*methods ; Protein Interaction Maps/*physiology ; Reproducibility of Results ; Virus Replication
    Print ISSN: 0028-0836
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  • 2
    Publication Date: 2011-12-23
    Description: Restriction factors, such as the retroviral complementary DNA deaminase APOBEC3G, are cellular proteins that dominantly block virus replication. The AIDS virus, human immunodeficiency virus type 1 (HIV-1), produces the accessory factor Vif, which counteracts the host's antiviral defence by hijacking a ubiquitin ligase complex, containing CUL5, ELOC, ELOB and a RING-box protein, and targeting APOBEC3G for degradation. Here we reveal, using an affinity tag/purification mass spectrometry approach, that Vif additionally recruits the transcription cofactor CBF-beta to this ubiquitin ligase complex. CBF-beta, which normally functions in concert with RUNX DNA binding proteins, allows the reconstitution of a recombinant six-protein assembly that elicits specific polyubiquitination activity with APOBEC3G, but not the related deaminase APOBEC3A. Using RNA knockdown and genetic complementation studies, we also demonstrate that CBF-beta is required for Vif-mediated degradation of APOBEC3G and therefore for preserving HIV-1 infectivity. Finally, simian immunodeficiency virus (SIV) Vif also binds to and requires CBF-beta to degrade rhesus macaque APOBEC3G, indicating functional conservation. Methods of disrupting the CBF-beta-Vif interaction might enable HIV-1 restriction and provide a supplement to current antiviral therapies that primarily target viral proteins.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3310910/" 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/PMC3310910/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Jager, Stefanie -- Kim, Dong Young -- Hultquist, Judd F -- Shindo, Keisuke -- LaRue, Rebecca S -- Kwon, Eunju -- Li, Ming -- Anderson, Brett D -- Yen, Linda -- Stanley, David -- Mahon, Cathal -- Kane, Joshua -- Franks-Skiba, Kathy -- Cimermancic, Peter -- Burlingame, Alma -- Sali, Andrej -- Craik, Charles S -- Harris, Reuben S -- Gross, John D -- Krogan, Nevan J -- P01 AI090935/AI/NIAID NIH HHS/ -- P01 GM091743/GM/NIGMS NIH HHS/ -- P41 GM103481/GM/NIGMS NIH HHS/ -- P41RR001614/RR/NCRR NIH HHS/ -- P50 GM081879/GM/NIGMS NIH HHS/ -- P50 GM082250/GM/NIGMS NIH HHS/ -- P50 GM082250-05/GM/NIGMS NIH HHS/ -- P50GM081879/GM/NIGMS NIH HHS/ -- R01 AI064046/AI/NIAID NIH HHS/ -- T32 AI083196/AI/NIAID NIH HHS/ -- U54 RR022220/RR/NCRR NIH HHS/ -- England -- Nature. 2011 Dec 21;481(7381):371-5. doi: 10.1038/nature10693.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cellular and Molecular Pharmacology, University of California-San Francisco, San Francisco, California 94158, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/22190037" target="_blank"〉PubMed〈/a〉
    Keywords: Affinity Labels ; Animals ; Core Binding Factor beta Subunit/*metabolism ; Cullin Proteins/metabolism ; Cytidine Deaminase/*metabolism ; Gene Knockdown Techniques ; Gene Products, vif/*metabolism ; Genetic Complementation Test ; HEK293 Cells ; HIV Infections/*metabolism/*virology ; HIV-1/*physiology ; Host-Pathogen Interactions ; Humans ; Jurkat Cells ; Macaca mulatta/metabolism/virology ; Mass Spectrometry ; Models, Biological ; Protein Binding ; Proteolysis ; Simian Immunodeficiency Virus/metabolism ; Ubiquitin-Protein Ligases/chemistry/metabolism ; Ubiquitination ; Virus Replication ; vif Gene Products, Human Immunodeficiency Virus/*metabolism
    Print ISSN: 0028-0836
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  • 3
    Publication Date: 2015-07-23
    Description: G-protein-coupled receptors (GPCRs) signal primarily through G proteins or arrestins. Arrestin binding to GPCRs blocks G protein interaction and redirects signalling to numerous G-protein-independent pathways. Here we report the crystal structure of a constitutively active form of human rhodopsin bound to a pre-activated form of the mouse visual arrestin, determined by serial femtosecond X-ray laser crystallography. Together with extensive biochemical and mutagenesis data, the structure reveals an overall architecture of the rhodopsin-arrestin assembly in which rhodopsin uses distinct structural elements, including transmembrane helix 7 and helix 8, to recruit arrestin. Correspondingly, arrestin adopts the pre-activated conformation, with a approximately 20 degrees rotation between the amino and carboxy domains, which opens up a cleft in arrestin to accommodate a short helix formed by the second intracellular loop of rhodopsin. This structure provides a basis for understanding GPCR-mediated arrestin-biased signalling and demonstrates the power of X-ray lasers for advancing the frontiers of structural biology.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4521999/" 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/PMC4521999/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kang, Yanyong -- Zhou, X Edward -- Gao, Xiang -- He, Yuanzheng -- Liu, Wei -- Ishchenko, Andrii -- Barty, Anton -- White, Thomas A -- Yefanov, Oleksandr -- Han, Gye Won -- Xu, Qingping -- de Waal, Parker W -- Ke, Jiyuan -- Tan, M H Eileen -- Zhang, Chenghai -- Moeller, Arne -- West, Graham M -- Pascal, Bruce D -- Van Eps, Ned -- Caro, Lydia N -- Vishnivetskiy, Sergey A -- Lee, Regina J -- Suino-Powell, Kelly M -- Gu, Xin -- Pal, Kuntal -- Ma, Jinming -- Zhi, Xiaoyong -- Boutet, Sebastien -- Williams, Garth J -- Messerschmidt, Marc -- Gati, Cornelius -- Zatsepin, Nadia A -- Wang, Dingjie -- James, Daniel -- Basu, Shibom -- Roy-Chowdhury, Shatabdi -- Conrad, Chelsie E -- Coe, Jesse -- Liu, Haiguang -- Lisova, Stella -- Kupitz, Christopher -- Grotjohann, Ingo -- Fromme, Raimund -- Jiang, Yi -- Tan, Minjia -- Yang, Huaiyu -- Li, Jun -- Wang, Meitian -- Zheng, Zhong -- Li, Dianfan -- Howe, Nicole -- Zhao, Yingming -- Standfuss, Jorg -- Diederichs, Kay -- Dong, Yuhui -- Potter, Clinton S -- Carragher, Bridget -- Caffrey, Martin -- Jiang, Hualiang -- Chapman, Henry N -- Spence, John C H -- Fromme, Petra -- Weierstall, Uwe -- Ernst, Oliver P -- Katritch, Vsevolod -- Gurevich, Vsevolod V -- Griffin, Patrick R -- Hubbell, Wayne L -- Stevens, Raymond C -- Cherezov, Vadim -- Melcher, Karsten -- Xu, H Eric -- DK071662/DK/NIDDK NIH HHS/ -- EY005216/EY/NEI NIH HHS/ -- EY011500/EY/NEI NIH HHS/ -- GM073197/GM/NIGMS NIH HHS/ -- GM077561/GM/NIGMS NIH HHS/ -- GM095583/GM/NIGMS NIH HHS/ -- GM097463/GM/NIGMS NIH HHS/ -- GM102545/GM/NIGMS NIH HHS/ -- GM103310/GM/NIGMS NIH HHS/ -- GM104212/GM/NIGMS NIH HHS/ -- GM108635/GM/NIGMS NIH HHS/ -- P30EY000331/EY/NEI NIH HHS/ -- P41 GM103310/GM/NIGMS NIH HHS/ -- P41GM103393/GM/NIGMS NIH HHS/ -- P41RR001209/RR/NCRR NIH HHS/ -- P50 GM073197/GM/NIGMS NIH HHS/ -- P50 GM073210/GM/NIGMS NIH HHS/ -- R01 DK066202/DK/NIDDK NIH HHS/ -- R01 DK071662/DK/NIDDK NIH HHS/ -- R01 EY011500/EY/NEI NIH HHS/ -- R01 GM087413/GM/NIGMS NIH HHS/ -- R01 GM109955/GM/NIGMS NIH HHS/ -- S10 RR027270/RR/NCRR NIH HHS/ -- U54 GM094586/GM/NIGMS NIH HHS/ -- U54 GM094599/GM/NIGMS NIH HHS/ -- U54 GM094618/GM/NIGMS NIH HHS/ -- England -- Nature. 2015 Jul 30;523(7562):561-7. doi: 10.1038/nature14656. Epub 2015 Jul 22.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Structural Sciences, Center for Structural Biology and Drug Discovery, Van Andel Research Institute, Grand Rapids, Michigan 49503, USA. ; Department of Chemistry and Biochemistry, and Center for Applied Structural Discovery, Biodesign Institute, Arizona State University, Tempe, Arizona 85287-1604, USA. ; Department of Chemistry, Bridge Institute, University of Southern California, Los Angeles, California 90089, USA. ; Center for Free Electron Laser Science, Deutsches Elektronen-Synchrotron DESY, 22607 Hamburg, Germany. ; Joint Center for Structural Genomics, Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA. ; 1] Laboratory of Structural Sciences, Center for Structural Biology and Drug Discovery, Van Andel Research Institute, Grand Rapids, Michigan 49503, USA [2] Department of Obstetrics &Gynecology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore. ; The National Resource for Automated Molecular Microscopy, New York Structural Biology Center, New York, New York 10027, USA. ; Department of Molecular Therapeutics, The Scripps Research Institute, Scripps Florida, Jupiter, Florida 33458, USA. ; Jules Stein Eye Institute and Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095, USA. ; Department of Biochemistry, University of Toronto, Toronto, Ontario M5S 1A8, Canada. ; Department of Pharmacology, Vanderbilt University, Nashville, Tennessee 37232, USA. ; Linac Coherent Light Source (LCLS), SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA. ; 1] Linac Coherent Light Source (LCLS), SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA [2] BioXFEL, NSF Science and Technology Center, 700 Ellicott Street, Buffalo, New York 14203, USA. ; 1] Department of Chemistry and Biochemistry, and Center for Applied Structural Discovery, Biodesign Institute, Arizona State University, Tempe, Arizona 85287-1604, USA [2] Department of Physics, Arizona State University, Tempe, Arizona 85287, USA. ; 1] Department of Chemistry and Biochemistry, and Center for Applied Structural Discovery, Biodesign Institute, Arizona State University, Tempe, Arizona 85287-1604, USA [2] Beijing Computational Science Research Center, Haidian District, Beijing 10084, China. ; 1] Department of Chemistry and Biochemistry, and Center for Applied Structural Discovery, Biodesign Institute, Arizona State University, Tempe, Arizona 85287-1604, USA [2] Department of Physics, University of Wisconsin-Milwaukee, Milwaukee, Wisconsin 53211, USA. ; State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China. ; Department of Obstetrics &Gynecology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore. ; Swiss Light Source at Paul Scherrer Institute, CH-5232 Villigen, Switzerland. ; Department of Biological Sciences, Bridge Institute, University of Southern California, Los Angeles, California 90089, USA. ; School of Medicine and School of Biochemistry and Immunology, Trinity College, Dublin 2, Ireland. ; 1] BioXFEL, NSF Science and Technology Center, 700 Ellicott Street, Buffalo, New York 14203, USA [2] Ben May Department for Cancer Research, University of Chicago, Chicago, Illinois 60637, USA. ; Laboratory of Biomolecular Research at Paul Scherrer Institute, CH-5232 Villigen, Switzerland. ; Department of Biology, Universitat Konstanz, 78457 Konstanz, Germany. ; Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China. ; 1] Center for Free Electron Laser Science, Deutsches Elektronen-Synchrotron DESY, 22607 Hamburg, Germany [2] Centre for Ultrafast Imaging, 22761 Hamburg, Germany. ; 1] Department of Biochemistry, University of Toronto, Toronto, Ontario M5S 1A8, Canada [2] Department of Molecular Genetics, University of Toronto, Toronto, Ontario M5S 1A8, Canada. ; 1] Department of Chemistry, Bridge Institute, University of Southern California, Los Angeles, California 90089, USA [2] Department of Biological Sciences, Bridge Institute, University of Southern California, Los Angeles, California 90089, USA [3] iHuman Institute, ShanghaiTech University, 2F Building 6, 99 Haike Road, Pudong New District, Shanghai 201210, China. ; 1] Laboratory of Structural Sciences, Center for Structural Biology and Drug Discovery, Van Andel Research Institute, Grand Rapids, Michigan 49503, USA [2] VARI-SIMM Center, Center for Structure and Function of Drug Targets, CAS-Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26200343" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Arrestin/*chemistry/*metabolism ; Binding Sites ; Crystallography, X-Ray ; Disulfides/chemistry/metabolism ; Humans ; Lasers ; Mice ; Models, Molecular ; Multiprotein Complexes/biosynthesis/chemistry/metabolism ; Protein Binding ; Reproducibility of Results ; Rhodopsin/*chemistry/*metabolism ; Signal Transduction ; X-Rays
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  • 4
    Publication Date: 2009-01-02
    Description: The transcription factor NF-kappaB is required for lymphocyte activation and proliferation as well as the survival of certain lymphoma types. Antigen receptor stimulation assembles an NF-kappaB activating platform containing the scaffold protein CARMA1 (also called CARD11), the adaptor BCL10 and the paracaspase MALT1 (the CBM complex), linked to the inhibitor of NF-kappaB kinase complex, but signal transduction is not fully understood. We conducted parallel screens involving a mass spectrometry analysis of CARMA1 binding partners and an RNA interference screen for growth inhibition of the CBM-dependent 'activated B-cell-like' (ABC) subtype of diffuse large B-cell lymphoma (DLBCL). Here we report that both screens identified casein kinase 1alpha (CK1alpha) as a bifunctional regulator of NF-kappaB. CK1alpha dynamically associates with the CBM complex on T-cell-receptor (TCR) engagement to participate in cytokine production and lymphocyte proliferation. However, CK1alpha kinase activity has a contrasting role by subsequently promoting the phosphorylation and inactivation of CARMA1. CK1alpha has thus a dual 'gating' function which first promotes and then terminates receptor-induced NF-kappaB. ABC DLBCL cells required CK1alpha for constitutive NF-kappaB activity, indicating that CK1alpha functions as a conditionally essential malignancy gene-a member of a new class of potential cancer therapeutic targets.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2688735/" 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/PMC2688735/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bidere, Nicolas -- Ngo, Vu N -- Lee, Jeansun -- Collins, Cailin -- Zheng, Lixin -- Wan, Fengyi -- Davis, R Eric -- Lenz, Georg -- Anderson, D Eric -- Arnoult, Damien -- Vazquez, Aime -- Sakai, Keiko -- Zhang, Jun -- Meng, Zhaojing -- Veenstra, Timothy D -- Staudt, Louis M -- Lenardo, Michael J -- NIH0011349228/PHS HHS/ -- Intramural NIH HHS/ -- England -- Nature. 2009 Mar 5;458(7234):92-6. doi: 10.1038/nature07613. Epub 2008 Dec 31.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Molecular Development Section, Laboratory of Immunology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland 20892, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19118383" target="_blank"〉PubMed〈/a〉
    Keywords: Adaptor Proteins, Signal Transducing/metabolism ; CARD Signaling Adaptor Proteins/metabolism ; Casein Kinases/*metabolism ; Caspases/metabolism ; Cell Proliferation ; Cell Survival ; Cells, Cultured ; Feedback, Physiological ; Guanylate Cyclase/metabolism ; Humans ; I-kappa B Kinase/metabolism ; Jurkat Cells ; Lymphoma, Large B-Cell, Diffuse/enzymology/*metabolism/*pathology ; NF-kappa B/*metabolism ; Neoplasm Proteins/metabolism ; Protein Binding ; Receptors, Antigen/*metabolism ; Signal Transduction
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  • 5
    Publication Date: 2015-11-03
    Description: Macroautophagy (hereafter referred to as autophagy) is a catabolic membrane trafficking process that degrades a variety of cellular constituents and is associated with human diseases. Although extensive studies have focused on autophagic turnover of cytoplasmic materials, little is known about the role of autophagy in degrading nuclear components. Here we report that the autophagy machinery mediates degradation of nuclear lamina components in mammals. The autophagy protein LC3/Atg8, which is involved in autophagy membrane trafficking and substrate delivery, is present in the nucleus and directly interacts with the nuclear lamina protein lamin B1, and binds to lamin-associated domains on chromatin. This LC3-lamin B1 interaction does not downregulate lamin B1 during starvation, but mediates its degradation upon oncogenic insults, such as by activated RAS. Lamin B1 degradation is achieved by nucleus-to-cytoplasm transport that delivers lamin B1 to the lysosome. Inhibiting autophagy or the LC3-lamin B1 interaction prevents activated RAS-induced lamin B1 loss and attenuates oncogene-induced senescence in primary human cells. Our study suggests that this new function of autophagy acts as a guarding mechanism protecting cells from tumorigenesis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dou, Zhixun -- Xu, Caiyue -- Donahue, Greg -- Shimi, Takeshi -- Pan, Ji-An -- Zhu, Jiajun -- Ivanov, Andrejs -- Capell, Brian C -- Drake, Adam M -- Shah, Parisha P -- Catanzaro, Joseph M -- Ricketts, M Daniel -- Lamark, Trond -- Adam, Stephen A -- Marmorstein, Ronen -- Zong, Wei-Xing -- Johansen, Terje -- Goldman, Robert D -- Adams, Peter D -- Berger, Shelley L -- P01AG031862/AG/NIA NIH HHS/ -- R01 CA078831/CA/NCI NIH HHS/ -- R01 GM106023/GM/NIGMS NIH HHS/ -- England -- Nature. 2015 Nov 5;527(7576):105-9. doi: 10.1038/nature15548. Epub 2015 Oct 28.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Epigenetics Program, Department of Cell and Developmental Biology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA. ; Department of Cell and Molecular Biology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois 60611, USA. ; Department of Molecular Genetics and Microbiology, Stony Brook University, Stony Brook, New York 11794, USA. ; Institute of Cancer Sciences, University of Glasgow and Beatson Institute for Cancer Research, Glasgow G61 1BD, UK. ; Department of Biochemistry &Biophysics, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA. ; Molecular Cancer Research Group, Institute of Medical Biology, University of Tromso - The Arctic University of Norway, 9037 Tromso, Norway. ; Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA. ; Abramson Family Cancer Research Institute, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26524528" target="_blank"〉PubMed〈/a〉
    Keywords: Adaptor Proteins, Signal Transducing/metabolism ; Animals ; *Autophagy ; Cell Aging ; Cell Transformation, Neoplastic ; Cells, Cultured ; Chromatin/chemistry/metabolism ; Cytoplasm/metabolism ; Fibroblasts ; HEK293 Cells ; Humans ; Lamin Type B/genetics/metabolism ; Lysosomes/metabolism ; Mice ; Microfilament Proteins/metabolism ; Microtubule-Associated Proteins/metabolism ; Nuclear Lamina/*metabolism ; Oncogene Protein p21(ras)/metabolism ; Protein Binding ; Proteolysis
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  • 6
    Publication Date: 2010-06-11
    Description: Populations of cells are almost always heterogeneous in function and fate. To understand the plasticity of cells, it is vital to measure quantitatively and dynamically the molecular processes that underlie cell-fate decisions in single cells. Early events in cell signalling often occur within seconds of the stimulus, whereas intracellular signalling processes and transcriptional changes can take minutes or hours. By contrast, cell-fate decisions, such as whether a cell divides, differentiates or dies, can take many hours or days. Multiparameter experimental and computational methods that integrate quantitative measurement and mathematical simulation of these noisy and complex processes are required to understand the highly dynamic mechanisms that control cell plasticity and fate.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Spiller, David G -- Wood, Christopher D -- Rand, David A -- White, Michael R H -- 67252/Wellcome Trust/United Kingdom -- BB/D010748/1/Biotechnology and Biological Sciences Research Council/United Kingdom -- BB/E004210/1/Biotechnology and Biological Sciences Research Council/United Kingdom -- BB/E012965/1/Biotechnology and Biological Sciences Research Council/United Kingdom -- BB/E013600/1/Biotechnology and Biological Sciences Research Council/United Kingdom -- BB/F005814/1/Biotechnology and Biological Sciences Research Council/United Kingdom -- BB/F005938/1/Biotechnology and Biological Sciences Research Council/United Kingdom -- BB/H013725/1/Biotechnology and Biological Sciences Research Council/United Kingdom -- BBD0107481/Biotechnology and Biological Sciences Research Council/United Kingdom -- BBE0042101/Biotechnology and Biological Sciences Research Council/United Kingdom -- BBE0129651/Biotechnology and Biological Sciences Research Council/United Kingdom -- BBE0136001/Biotechnology and Biological Sciences Research Council/United Kingdom -- BBF0052611/Biotechnology and Biological Sciences Research Council/United Kingdom -- BBF0053181/Biotechnology and Biological Sciences Research Council/United Kingdom -- BBF0058061/Biotechnology and Biological Sciences Research Council/United Kingdom -- BBF0059381/Biotechnology and Biological Sciences Research Council/United Kingdom -- G0500346/Medical Research Council/United Kingdom -- England -- Nature. 2010 Jun 10;465(7299):736-45. doi: 10.1038/nature09232.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Centre for Cell Imaging, School of Biological Sciences, Bioscience Research Building, Crown Street, Liverpool L69 7ZB, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20535203" target="_blank"〉PubMed〈/a〉
    Keywords: Cell Differentiation ; *Cell Physiological Phenomena/genetics/physiology ; Cytological Techniques/*methods ; Microfluidics/methods ; Protein Binding ; Protein Transport ; Signal Transduction ; Transcription, Genetic
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  • 7
    Publication Date: 2013-10-15
    Description: The design of G-protein-coupled receptor (GPCR) allosteric modulators, an active area of modern pharmaceutical research, has proved challenging because neither the binding modes nor the molecular mechanisms of such drugs are known. Here we determine binding sites, bound conformations and specific drug-receptor interactions for several allosteric modulators of the M2 muscarinic acetylcholine receptor (M2 receptor), a prototypical family A GPCR, using atomic-level simulations in which the modulators spontaneously associate with the receptor. Despite substantial structural diversity, all modulators form cation-pi interactions with clusters of aromatic residues in the receptor extracellular vestibule, approximately 15 A from the classical, 'orthosteric' ligand-binding site. We validate the observed modulator binding modes through radioligand binding experiments on receptor mutants designed, on the basis of our simulations, either to increase or to decrease modulator affinity. Simulations also revealed mechanisms that contribute to positive and negative allosteric modulation of classical ligand binding, including coupled conformational changes of the two binding sites and electrostatic interactions between ligands in these sites. These observations enabled the design of chemical modifications that substantially alter a modulator's allosteric effects. Our findings thus provide a structural basis for the rational design of allosteric modulators targeting muscarinic and possibly other GPCRs.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dror, Ron O -- Green, Hillary F -- Valant, Celine -- Borhani, David W -- Valcourt, James R -- Pan, Albert C -- Arlow, Daniel H -- Canals, Meritxell -- Lane, J Robert -- Rahmani, Raphael -- Baell, Jonathan B -- Sexton, Patrick M -- Christopoulos, Arthur -- Shaw, David E -- England -- Nature. 2013 Nov 14;503(7475):295-9. doi: 10.1038/nature12595. Epub 2013 Oct 13.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] D. E. Shaw Research, 120 West 45th Street, 39th Floor, New York, New York 10036, USA [2].〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24121438" target="_blank"〉PubMed〈/a〉
    Keywords: Allosteric Regulation/physiology ; Animals ; Binding Sites ; CHO Cells ; Cricetulus ; *Drug Design ; Humans ; Models, Chemical ; Molecular Conformation ; Molecular Dynamics Simulation ; Mutation ; Protein Binding ; Receptors, G-Protein-Coupled/*antagonists & inhibitors/*chemistry/genetics ; Reproducibility of Results
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 8
    Publication Date: 2014-08-29
    Description: Discovering the structure and dynamics of transcriptional regulatory events in the genome with cellular and temporal resolution is crucial to understanding the regulatory underpinnings of development and disease. We determined the genomic distribution of binding sites for 92 transcription factors and regulatory proteins across multiple stages of Caenorhabditis elegans development by performing 241 ChIP-seq (chromatin immunoprecipitation followed by sequencing) experiments. Integration of regulatory binding and cellular-resolution expression data produced a spatiotemporally resolved metazoan transcription factor binding map. Using this map, we explore developmental regulatory circuits that encode combinatorial logic at the levels of co-binding and co-expression of transcription factors, characterizing the genomic coverage and clustering of regulatory binding, the binding preferences of, and biological processes regulated by, transcription factors, the global transcription factor co-associations and genomic subdomains that suggest shared patterns of regulation, and identifying key transcription factors and transcription factor co-associations for fate specification of individual lineages and cell types.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4530805/" 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/PMC4530805/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Araya, Carlos L -- Kawli, Trupti -- Kundaje, Anshul -- Jiang, Lixia -- Wu, Beijing -- Vafeados, Dionne -- Terrell, Robert -- Weissdepp, Peter -- Gevirtzman, Louis -- Mace, Daniel -- Niu, Wei -- Boyle, Alan P -- Xie, Dan -- Ma, Lijia -- Murray, John I -- Reinke, Valerie -- Waterston, Robert H -- Snyder, Michael -- R01 GM072675/GM/NIGMS NIH HHS/ -- U01 HG004267/HG/NHGRI NIH HHS/ -- England -- Nature. 2014 Aug 28;512(7515):400-5. doi: 10.1038/nature13497.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Genetics, Stanford University School of Medicine, Stanford, California 94305, USA. ; Department of Computer Science, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA. ; Department of Genome Sciences, University of Washington, Seattle, Washington 98195, USA. ; Department of Genetics, Yale University School of Medicine, New Haven, Connecticut 06520, USA. ; Institute for Genomics and Systems Biology, University of Chicago, Chicago, Illinois 60637, USA. ; Department of Genetics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25164749" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Binding Sites ; Caenorhabditis elegans/cytology/embryology/*genetics/*growth & development ; Caenorhabditis elegans Proteins/metabolism ; Cell Lineage ; Chromatin Immunoprecipitation ; Gene Expression Regulation, Developmental/*genetics ; Genome, Helminth/*genetics ; Genomics ; Larva/cytology/genetics/growth & development/metabolism ; Protein Binding ; *Spatio-Temporal Analysis ; Transcription Factors/*metabolism
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    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 9
    Publication Date: 2013-12-24
    Description: Acyl carrier protein (ACP) transports the growing fatty acid chain between enzymatic domains of fatty acid synthase (FAS) during biosynthesis. Because FAS enzymes operate on ACP-bound acyl groups, ACP must stabilize and transport the growing lipid chain. ACPs have a central role in transporting starting materials and intermediates throughout the fatty acid biosynthetic pathway. The transient nature of ACP-enzyme interactions impose major obstacles to obtaining high-resolution structural information about fatty acid biosynthesis, and a new strategy is required to study protein-protein interactions effectively. Here we describe the application of a mechanism-based probe that allows active site-selective covalent crosslinking of AcpP to FabA, the Escherichia coli ACP and fatty acid 3-hydroxyacyl-ACP dehydratase, respectively. We report the 1.9 A crystal structure of the crosslinked AcpP-FabA complex as a homodimer in which AcpP exhibits two different conformations, representing probable snapshots of ACP in action: the 4'-phosphopantetheine group of AcpP first binds an arginine-rich groove of FabA, then an AcpP helical conformational change locks AcpP and FabA in place. Residues at the interface of AcpP and FabA are identified and validated by solution nuclear magnetic resonance techniques, including chemical shift perturbations and residual dipolar coupling measurements. These not only support our interpretation of the crystal structures but also provide an animated view of ACP in action during fatty acid dehydration. These techniques, in combination with molecular dynamics simulations, show for the first time that FabA extrudes the sequestered acyl chain from the ACP binding pocket before dehydration by repositioning helix III. Extensive sequence conservation among carrier proteins suggests that the mechanistic insights gleaned from our studies may be broadly applicable to fatty acid, polyketide and non-ribosomal biosynthesis. Here the foundation is laid for defining the dynamic action of carrier-protein activity in primary and secondary metabolism, providing insight into pathways that can have major roles in the treatment of cancer, obesity and infectious disease.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4437705/" 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/PMC4437705/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Nguyen, Chi -- Haushalter, Robert W -- Lee, D John -- Markwick, Phineus R L -- Bruegger, Joel -- Caldara-Festin, Grace -- Finzel, Kara -- Jackson, David R -- Ishikawa, Fumihiro -- O'Dowd, Bing -- McCammon, J Andrew -- Opella, Stanley J -- Tsai, Shiou-Chuan -- Burkart, Michael D -- GM095970/GM/NIGMS NIH HHS/ -- GM100305/GM/NIGMS NIH HHS/ -- P41 EB002031/EB/NIBIB NIH HHS/ -- R01 GM066978/GM/NIGMS NIH HHS/ -- R01 GM095970/GM/NIGMS NIH HHS/ -- R01 GM100305/GM/NIGMS NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2014 Jan 16;505(7483):427-31. doi: 10.1038/nature12810. Epub 2013 Dec 22.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] Departments of Molecular Biology and Biochemistry, Chemistry, and Pharmaceutical Sciences, University of California, Irvine, California 92697, USA [2]. ; 1] Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093, USA [2]. ; 1] Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093, USA [2] San Diego Supercomputer Center, La Jolla, California 92093, USA [3] Howard Hughes Medical Institute, La Jolla, California 92093, USA. ; Departments of Molecular Biology and Biochemistry, Chemistry, and Pharmaceutical Sciences, University of California, Irvine, California 92697, USA. ; Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093, USA. ; 1] Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093, USA [2] Howard Hughes Medical Institute, La Jolla, California 92093, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24362570" target="_blank"〉PubMed〈/a〉
    Keywords: Acyl Carrier Protein/*chemistry/*metabolism ; Binding Sites ; Catalytic Domain ; Cross-Linking Reagents/chemistry ; Crystallography, X-Ray ; Escherichia coli/*chemistry ; Fatty Acid Synthase, Type II/chemistry/metabolism ; Fatty Acids/*biosynthesis ; Histidine/metabolism ; Hydro-Lyases/chemistry/metabolism ; Magnetic Resonance Spectroscopy ; Models, Molecular ; Molecular Dynamics Simulation ; Protein Binding ; Protein Interaction Maps
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    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 10
    Publication Date: 2013-07-03
    Description: Transcription factors are frequently altered in leukaemia through chromosomal translocation, mutation or aberrant expression. AML1-ETO, a fusion protein generated by the t(8;21) translocation in acute myeloid leukaemia, is a transcription factor implicated in both gene repression and activation. AML1-ETO oligomerization, mediated by the NHR2 domain, is critical for leukaemogenesis, making it important to identify co-regulatory factors that 'read' the NHR2 oligomerization and contribute to leukaemogenesis. Here we show that, in human leukaemic cells, AML1-ETO resides in and functions through a stable AML1-ETO-containing transcription factor complex (AETFC) that contains several haematopoietic transcription (co)factors. These AETFC components stabilize the complex through multivalent interactions, provide multiple DNA-binding domains for diverse target genes, co-localize genome wide, cooperatively regulate gene expression, and contribute to leukaemogenesis. Within the AETFC complex, AML1-ETO oligomerization is required for a specific interaction between the oligomerized NHR2 domain and a novel NHR2-binding (N2B) motif in E proteins. Crystallographic analysis of the NHR2-N2B complex reveals a unique interaction pattern in which an N2B peptide makes direct contact with side chains of two NHR2 domains as a dimer, providing a novel model of how dimeric/oligomeric transcription factors create a new protein-binding interface through dimerization/oligomerization. Intriguingly, disruption of this interaction by point mutations abrogates AML1-ETO-induced haematopoietic stem/progenitor cell self-renewal and leukaemogenesis. These results reveal new mechanisms of action of AML1-ETO, and provide a potential therapeutic target in t(8;21)-positive acute myeloid leukaemia.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3732535/" 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/PMC3732535/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sun, Xiao-Jian -- Wang, Zhanxin -- Wang, Lan -- Jiang, Yanwen -- Kost, Nils -- Soong, T David -- Chen, Wei-Yi -- Tang, Zhanyun -- Nakadai, Tomoyoshi -- Elemento, Olivier -- Fischle, Wolfgang -- Melnick, Ari -- Patel, Dinshaw J -- Nimer, Stephen D -- Roeder, Robert G -- CA113872/CA/NCI NIH HHS/ -- CA129325/CA/NCI NIH HHS/ -- CA163086/CA/NCI NIH HHS/ -- CA166835/CA/NCI NIH HHS/ -- R01 CA163086/CA/NCI NIH HHS/ -- R01 CA166835/CA/NCI NIH HHS/ -- UL1 RR024143/RR/NCRR NIH HHS/ -- UL1RR024143/RR/NCRR NIH HHS/ -- England -- Nature. 2013 Aug 1;500(7460):93-7. doi: 10.1038/nature12287. Epub 2013 Jun 30.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Biochemistry and Molecular Biology, The Rockefeller University, New York, New York 10065, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/23812588" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Motifs ; Amino Acid Sequence ; Animals ; Binding Sites ; Cell Division ; Cell Line, Tumor ; *Cell Transformation, Neoplastic/genetics ; Core Binding Factor Alpha 2 Subunit/chemistry/*metabolism ; Hematopoietic Stem Cells/cytology/metabolism/pathology ; Humans ; Leukemia, Myeloid, Acute/genetics/*metabolism/*pathology ; Mice ; Models, Molecular ; Molecular Sequence Data ; Multiprotein Complexes/chemistry/*metabolism ; Oncogene Proteins, Fusion/chemistry/*metabolism ; Point Mutation ; Protein Binding ; Protein Multimerization ; Protein Stability ; Protein Structure, Tertiary ; Transcription Factors/*metabolism
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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