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  • Cell Line  (3)
  • Mass Spectrometry  (2)
  • Proteasome Endopeptidase Complex/*metabolism
  • Proteomics
  • 2005-2009  (6)
  • 1
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    The impact of microRNAs on protein output (2008)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2008-08-01
    Description: MicroRNAs are endogenous approximately 23-nucleotide RNAs that can pair to sites in the messenger RNAs of protein-coding genes to downregulate the expression from these messages. MicroRNAs are known to influence the evolution and stability of many mRNAs, but their global impact on protein output had not been examined. Here we use quantitative mass spectrometry to measure the response of thousands of proteins after introducing microRNAs into cultured cells and after deleting mir-223 in mouse neutrophils. The identities of the responsive proteins indicate that targeting is primarily through seed-matched sites located within favourable predicted contexts in 3' untranslated regions. Hundreds of genes were directly repressed, albeit each to a modest degree, by individual microRNAs. Although some targets were repressed without detectable changes in mRNA levels, those translationally repressed by more than a third also displayed detectable mRNA destabilization, and, for the more highly repressed targets, mRNA destabilization usually comprised the major component of repression. The impact of microRNAs on the proteome indicated that for most interactions microRNAs act as rheostats to make fine-scale adjustments to protein output.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2745094/" 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/PMC2745094/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Baek, Daehyun -- Villen, Judit -- Shin, Chanseok -- Camargo, Fernando D -- Gygi, Steven P -- Bartel, David P -- R01 GM067031/GM/NIGMS NIH HHS/ -- R01 HG003456/HG/NHGRI NIH HHS/ -- R01 HG003456-04A1/HG/NHGRI NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2008 Sep 4;455(7209):64-71. doi: 10.1038/nature07242. Epub 2008 Jul 30.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Whitehead Institute for Biomedical Research, 9 Cambridge Center, Cambridge, Massachusetts 02142, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18668037" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Gene Expression Regulation ; HeLa Cells ; Humans ; Isotope Labeling ; Male ; Mice ; MicroRNAs/*genetics/*metabolism ; Neutrophils/metabolism ; Oligonucleotide Array Sequence Analysis ; *Protein Biosynthesis ; Proteomics ; Transfection
    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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  • 2
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    Initiation of myoblast to brown fat switch by a PRDM16-C/EBP-beta transcriptional complex (2009)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2009-07-31
    Description: Brown adipose cells are specialized to dissipate chemical energy in the form of heat, as a physiological defence against cold and obesity. PRDM16 (PR domain containing 16) is a 140 kDa zinc finger protein that robustly induces brown fat determination and differentiation. Recent data suggests that brown fat cells arise in vivo from a Myf5-positive, myoblastic lineage by the action of PRDM16 (ref. 3); however, the molecular mechanisms responsible for this developmental switch is unclear. Here we show that PRDM16 forms a transcriptional complex with the active form of C/EBP-beta (also known as LAP), acting as a critical molecular unit that controls the cell fate switch from myoblastic precursors to brown fat cells. Forced expression of PRDM16 and C/EBP-beta is sufficient to induce a fully functional brown fat program in naive fibroblastic cells, including skin fibroblasts from mouse and man. Transplantation of fibroblasts expressing these two factors into mice gives rise to an ectopic fat pad with the morphological and biochemical characteristics of brown fat. Like endogenous brown fat, this synthetic brown fat tissue acts as a sink for glucose uptake, as determined by positron emission tomography with fluorodeoxyglucose. These data indicate that the PRDM16-C/EBP-beta complex initiates brown fat formation from myoblastic precursors, and may provide opportunities for the development of new therapeutics for obesity and type-2 diabetes.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2754867/" 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/PMC2754867/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kajimura, Shingo -- Seale, Patrick -- Kubota, Kazuishi -- Lunsford, Elaine -- Frangioni, John V -- Gygi, Steven P -- Spiegelman, Bruce M -- DK081605/DK/NIDDK NIH HHS/ -- DK31405/DK/NIDDK NIH HHS/ -- GM67945/GM/NIGMS NIH HHS/ -- HG3456/HG/NHGRI NIH HHS/ -- K99 DK087853/DK/NIDDK NIH HHS/ -- R37 DK031405/DK/NIDDK NIH HHS/ -- R37 DK031405-28/DK/NIDDK NIH HHS/ -- S10-RR-023010/RR/NCRR NIH HHS/ -- England -- Nature. 2009 Aug 27;460(7259):1154-8. doi: 10.1038/nature08262. Epub 2009 Jul 29.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Dana-Farber Cancer Institute, Harvard Medical School, 44 Binney Street, Boston, Massachusetts 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19641492" target="_blank"〉PubMed〈/a〉
    Keywords: Adipose Tissue, Brown/*cytology/*metabolism ; Animals ; CCAAT-Enhancer-Binding Protein-beta/genetics/*metabolism ; Cell Differentiation ; Cell Line ; Cells, Cultured ; Choristoma/metabolism ; DNA-Binding Proteins/genetics/*metabolism ; Fibroblasts/cytology/metabolism ; Glucose/metabolism ; Humans ; Male ; Mice ; Mice, Inbred C57BL ; Multiprotein Complexes ; Myoblasts/*cytology/*metabolism ; Skin/cytology ; Transcription Factors/genetics/*metabolism
    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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  • 3
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    Abraxas and RAP80 form a BRCA1 protein complex required for the DNA damage response (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2007-05-26
    Description: The BRCT repeats of the breast and ovarian cancer predisposition protein BRCA1 are essential for tumor suppression. Phosphopeptide affinity proteomic analysis identified a protein, Abraxas, that directly binds the BRCA1 BRCT repeats through a phospho-Ser-X-X-Phe motif. Abraxas binds BRCA1 to the mutual exclusion of BACH1 (BRCA1-associated C-terminal helicase) and CtIP (CtBP-interacting protein), forming a third type of BRCA1 complex. Abraxas recruits the ubiquitin-interacting motif (UIM)-containing protein RAP80 to BRCA1. Both Abraxas and RAP80 were required for DNA damage resistance, G(2)-M checkpoint control, and DNA repair. RAP80 was required for optimal accumulation of BRCA1 on damaged DNA (foci) in response to ionizing radiation, and the UIM domains alone were capable of foci formation. The RAP80-Abraxas complex may help recruit BRCA1 to DNA damage sites in part through recognition of ubiquitinated proteins.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3573690/" 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/PMC3573690/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wang, Bin -- Matsuoka, Shuhei -- Ballif, Bryan A -- Zhang, Dong -- Smogorzewska, Agata -- Gygi, Steven P -- Elledge, Stephen J -- 1KO1, CA116275-01/CA/NCI NIH HHS/ -- 1U19A1067751/PHS HHS/ -- T32CA09216/CA/NCI NIH HHS/ -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2007 May 25;316(5828):1194-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Genetics, Center for Genetics and Genomics, Brigham and Women's Hospital, Howard Hughes Medical Institute, Harvard Medical School, Boston, MA 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17525340" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; BRCA1 Protein/*physiology ; Carrier Proteins/*physiology ; Cell Line, Tumor ; *DNA Damage ; *DNA Repair ; HeLa Cells ; Humans ; Mass Spectrometry ; Molecular Sequence Data ; Nuclear Proteins/*physiology ; Protein Binding ; Protein Structure, Tertiary
    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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    ATM and ATR substrate analysis reveals extensive protein networks responsive to DNA damage (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2007-05-26
    Description: Cellular responses to DNA damage are mediated by a number of protein kinases, including ATM (ataxia telangiectasia mutated) and ATR (ATM and Rad3-related). The outlines of the signal transduction portion of this pathway are known, but little is known about the physiological scope of the DNA damage response (DDR). We performed a large-scale proteomic analysis of proteins phosphorylated in response to DNA damage on consensus sites recognized by ATM and ATR and identified more than 900 regulated phosphorylation sites encompassing over 700 proteins. Functional analysis of a subset of this data set indicated that this list is highly enriched for proteins involved in the DDR. This set of proteins is highly interconnected, and we identified a large number of protein modules and networks not previously linked to the DDR. This database paints a much broader landscape for the DDR than was previously appreciated and opens new avenues of investigation into the responses to DNA damage in mammals.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Matsuoka, Shuhei -- Ballif, Bryan A -- Smogorzewska, Agata -- McDonald, E Robert 3rd -- Hurov, Kristen E -- Luo, Ji -- Bakalarski, Corey E -- Zhao, Zhenming -- Solimini, Nicole -- Lerenthal, Yaniv -- Shiloh, Yosef -- Gygi, Steven P -- Elledge, Stephen J -- 1U19A1067751/PHS HHS/ -- New York, N.Y. -- Science. 2007 May 25;316(5828):1160-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Genetics and Center for Genetics and Genomics, Brigham and Women's Hospital, Howard Hughes Medical Institute, Harvard Medical School, Boston, MA 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17525332" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Ataxia Telangiectasia Mutated Proteins ; Binding Sites ; Cell Cycle/physiology ; Cell Cycle Proteins/*physiology ; Cell Line ; Computational Biology ; Consensus Sequence ; *DNA Damage ; *DNA Repair ; DNA Replication/physiology ; DNA-Binding Proteins/*physiology ; Humans ; Immunoprecipitation ; Isotope Labeling ; Mice ; NIH 3T3 Cells ; Phosphorylation ; Protein-Serine-Threonine Kinases/*physiology ; Proteome/isolation & purification/physiology ; RNA, Small Interfering ; Signal Transduction ; Substrate Specificity ; Tumor Suppressor Proteins/*physiology
    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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    Ubiquitin-like protein involved in the proteasome pathway of Mycobacterium tuberculosis (2008)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2008-10-04
    Description: The protein modifier ubiquitin is a signal for proteasome-mediated degradation in eukaryotes. Proteasome-bearing prokaryotes have been thought to degrade proteins via a ubiquitin-independent pathway. We have identified a prokaryotic ubiquitin-like protein, Pup (Rv2111c), which was specifically conjugated to proteasome substrates in the pathogen Mycobacterium tuberculosis. Pupylation occurred on lysines and required proteasome accessory factor A (PafA). In a pafA mutant, pupylated proteins were absent and substrates accumulated, thereby connecting pupylation with degradation. Although analogous to ubiquitylation, pupylation appears to proceed by a different chemistry. Thus, like eukaryotes, bacteria may use a small-protein modifier to control protein stability.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2698935/" 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/PMC2698935/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pearce, Michael J -- Mintseris, Julian -- Ferreyra, Jessica -- Gygi, Steven P -- Darwin, K Heran -- 5T32AI07189-25/AI/NIAID NIH HHS/ -- AI065437/AI/NIAID NIH HHS/ -- GM67945/GM/NIGMS NIH HHS/ -- HG3456/HG/NHGRI NIH HHS/ -- HG3616/HG/NHGRI NIH HHS/ -- HL092774/HL/NHLBI NIH HHS/ -- R01 HL092774/HL/NHLBI NIH HHS/ -- R01 HL092774-01/HL/NHLBI NIH HHS/ -- R01 HL092774-02/HL/NHLBI NIH HHS/ -- R56 AI065437/AI/NIAID NIH HHS/ -- R56 AI065437-01A2/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 2008 Nov 14;322(5904):1104-7. doi: 10.1126/science.1163885. Epub 2008 Oct 2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Microbiology, New York University School of Medicine, New York, NY 10016, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18832610" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine Triphosphatases/genetics/*metabolism ; Amino Acid Motifs ; Bacterial Proteins/chemistry/genetics/isolation & purification/*metabolism ; Glutamic Acid/metabolism ; Glutamine/metabolism ; Glycine/metabolism ; Lysine/metabolism ; Mass Spectrometry ; Molecular Sequence Data ; Mutation ; Mycobacterium smegmatis/metabolism ; Mycobacterium tuberculosis/genetics/*metabolism ; Proteasome Endopeptidase Complex/*metabolism ; Recombinant Fusion Proteins/chemistry/metabolism ; Ubiquitination ; Ubiquitins/chemistry/genetics/isolation & purification/*metabolism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 6
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    SDH5, a gene required for flavination of succinate dehydrogenase, is mutated in paraganglioma (2009)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2009-07-25
    Description: Mammalian mitochondria contain about 1100 proteins, nearly 300 of which are uncharacterized. Given the well-established role of mitochondrial defects in human disease, functional characterization of these proteins may shed new light on disease mechanisms. Starting with yeast as a model system, we investigated an uncharacterized but highly conserved mitochondrial protein (named here Sdh5). Both yeast and human Sdh5 interact with the catalytic subunit of the succinate dehydrogenase (SDH) complex, a component of both the electron transport chain and the tricarboxylic acid cycle. Sdh5 is required for SDH-dependent respiration and for Sdh1 flavination (incorporation of the flavin adenine dinucleotide cofactor). Germline loss-of-function mutations in the human SDH5 gene, located on chromosome 11q13.1, segregate with disease in a family with hereditary paraganglioma, a neuroendocrine tumor previously linked to mutations in genes encoding SDH subunits. Thus, a mitochondrial proteomics analysis in yeast has led to the discovery of a human tumor susceptibility gene.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3881419/" 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/PMC3881419/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hao, Huai-Xiang -- Khalimonchuk, Oleh -- Schraders, Margit -- Dephoure, Noah -- Bayley, Jean-Pierre -- Kunst, Henricus -- Devilee, Peter -- Cremers, Cor W R J -- Schiffman, Joshua D -- Bentz, Brandon G -- Gygi, Steven P -- Winge, Dennis R -- Kremer, Hannie -- Rutter, Jared -- DK071962/DK/NIDDK NIH HHS/ -- GM087346/GM/NIGMS NIH HHS/ -- R01 ES003817/ES/NIEHS NIH HHS/ -- New York, N.Y. -- Science. 2009 Aug 28;325(5944):1139-42. doi: 10.1126/science.1175689. Epub 2009 Jul 23.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry, University of Utah School of Medicine, Salt Lake City, UT 84112, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19628817" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Cell Line ; Cell Line, Tumor ; Female ; Flavin-Adenine Dinucleotide/metabolism ; Flavoproteins/metabolism ; *Germ-Line Mutation ; Haplotypes ; Humans ; Inheritance Patterns ; Male ; Mitochondria/*metabolism ; Mitochondrial Proteins/chemistry/*genetics/metabolism ; Molecular Sequence Data ; Oxygen Consumption ; Paraganglioma/*genetics ; Pedigree ; Protein Subunits/metabolism ; Proteomics ; Saccharomyces cerevisiae/*genetics/growth & development/metabolism ; Saccharomyces cerevisiae Proteins/chemistry/*genetics/*metabolism ; Succinate Dehydrogenase/*metabolism
    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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