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  • Protein Structure, Tertiary  (4)
  • Proteomics  (4)
  • Homeostasis  (3)
  • Proteasome Endopeptidase Complex/*metabolism  (3)
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  • 1
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    Network organization of the human autophagy system (2010)
    Nature Publishing Group (NPG)
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    Publication Date: 2010-06-22
    Description: Autophagy, the process by which proteins and organelles are sequestered in autophagosomal vesicles and delivered to the lysosome/vacuole for degradation, provides a primary route for turnover of stable and defective cellular proteins. Defects in this system are linked with numerous human diseases. Although conserved protein kinase, lipid kinase and ubiquitin-like protein conjugation subnetworks controlling autophagosome formation and cargo recruitment have been defined, our understanding of the global organization of this system is limited. Here we report a proteomic analysis of the autophagy interaction network in human cells under conditions of ongoing (basal) autophagy, revealing a network of 751 interactions among 409 candidate interacting proteins with extensive connectivity among subnetworks. Many new autophagy interaction network components have roles in vesicle trafficking, protein or lipid phosphorylation and protein ubiquitination, and affect autophagosome number or flux when depleted by RNA interference. The six ATG8 orthologues in humans (MAP1LC3/GABARAP proteins) interact with a cohort of 67 proteins, with extensive binding partner overlap between family members, and frequent involvement of a conserved surface on ATG8 proteins known to interact with LC3-interacting regions in partner proteins. These studies provide a global view of the mammalian autophagy interaction landscape and a resource for mechanistic analysis of this critical protein homeostasis pathway.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2901998/" 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/PMC2901998/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Behrends, Christian -- Sowa, Mathew E -- Gygi, Steven P -- Harper, J Wade -- R01 AG011085/AG/NIA NIH HHS/ -- R01 AG011085-18/AG/NIA NIH HHS/ -- R01 GM054137/GM/NIGMS NIH HHS/ -- R01 GM054137-14/GM/NIGMS NIH HHS/ -- R01 GM054137-14S1/GM/NIGMS NIH HHS/ -- R01 GM054137-15/GM/NIGMS NIH HHS/ -- R01 GM070565/GM/NIGMS NIH HHS/ -- R01 GM070565-05S1/GM/NIGMS NIH HHS/ -- R01 GM095567/GM/NIGMS NIH HHS/ -- England -- Nature. 2010 Jul 1;466(7302):68-76. doi: 10.1038/nature09204. Epub 2010 Jun 20.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pathology, Harvard Medical School, Boston, Massachusetts 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20562859" target="_blank"〉PubMed〈/a〉
    Keywords: Adaptor Proteins, Signal Transducing/genetics/metabolism ; Autophagy/genetics/*physiology ; Homeostasis ; Humans ; Microfilament Proteins/genetics/metabolism ; Phagosomes ; Phosphorylation ; Protein Binding ; *Protein Interaction Mapping ; Proteomics ; RNA Interference ; Reproducibility of Results ; Ubiquitination
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 2
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    The impact of microRNAs on protein output (2008)
    Nature Publishing Group (NPG)
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    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
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  • 3
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    Chaperone-mediated pathway of proteasome regulatory particle assembly (2009)
    Nature Publishing Group (NPG)
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    Publication Date: 2009-05-05
    Description: The proteasome is a protease that controls diverse processes in eukaryotic cells. Its regulatory particle (RP) initiates the degradation of ubiquitin-protein conjugates by unfolding the substrate and translocating it into the proteasome core particle (CP) to be degraded. The RP has 19 subunits, and their pathway of assembly is not understood. Here we show that in the yeast Saccharomyces cerevisiae three proteins are found associated with RP but not with the RP-CP holoenzyme: Nas6, Rpn14 and Hsm3. Mutations in the corresponding genes confer proteasome loss-of-function phenotypes, despite their virtual absence from the holoenzyme. These effects result from deficient RP assembly. Thus, Nas6, Rpn14 and Hsm3 are RP chaperones. The RP contains six ATPases-the Rpt proteins-and each RP chaperone binds to the carboxy-terminal domain of a specific Rpt. We show in an accompanying study that RP assembly is templated through the Rpt C termini, apparently by their insertion into binding pockets in the CP. Thus, RP chaperones may regulate proteasome assembly by directly restricting the accessibility of Rpt C termini to the CP. In addition, competition between the RP chaperones and the CP for Rpt engagement may explain the release of RP chaperones as proteasomes mature.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2727592/" 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/PMC2727592/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Roelofs, Jeroen -- Park, Soyeon -- Haas, Wilhelm -- Tian, Geng -- McAllister, Fiona E -- Huo, Ying -- Lee, Byung-Hoon -- Zhang, Fan -- Shi, Yigong -- Gygi, Steven P -- Finley, Daniel -- 5F32GM75737-2/GM/NIGMS NIH HHS/ -- GM043601/GM/NIGMS NIH HHS/ -- GM67945/GM/NIGMS NIH HHS/ -- R37 GM043601/GM/NIGMS NIH HHS/ -- R37 GM043601-19/GM/NIGMS NIH HHS/ -- England -- Nature. 2009 Jun 11;459(7248):861-5. doi: 10.1038/nature08063.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cell Biology, Harvard Medical School, 240 Longwood Avenue, Boston, Massachusetts 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19412159" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine Triphosphatases/chemistry/metabolism ; Carrier Proteins/genetics/metabolism ; Conserved Sequence ; Evolution, Molecular ; Holoenzymes/chemistry/metabolism ; Humans ; Models, Molecular ; Molecular Chaperones/genetics/*metabolism ; Mutation ; Phenotype ; Proteasome Endopeptidase Complex/*chemistry/genetics/*metabolism ; Protein Binding ; Protein Structure, Tertiary ; Proto-Oncogene Proteins/genetics/metabolism ; Saccharomyces cerevisiae/*enzymology/genetics ; Saccharomyces cerevisiae Proteins/genetics/metabolism
    Print ISSN: 0028-0836
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 4
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    Enhancement of proteasome activity by a small-molecule inhibitor of USP14 (2010)
    Nature Publishing Group (NPG)
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    Publication Date: 2010-09-11
    Description: Proteasomes, the primary mediators of ubiquitin-protein conjugate degradation, are regulated through complex and poorly understood mechanisms. Here we show that USP14, a proteasome-associated deubiquitinating enzyme, can inhibit the degradation of ubiquitin-protein conjugates both in vitro and in cells. A catalytically inactive variant of USP14 has reduced inhibitory activity, indicating that inhibition is mediated by trimming of the ubiquitin chain on the substrate. A high-throughput screen identified a selective small-molecule inhibitor of the deubiquitinating activity of human USP14. Treatment of cultured cells with this compound enhanced degradation of several proteasome substrates that have been implicated in neurodegenerative disease. USP14 inhibition accelerated the degradation of oxidized proteins and enhanced resistance to oxidative stress. Enhancement of proteasome activity through inhibition of USP14 may offer a strategy to reduce the levels of aberrant proteins in cells under proteotoxic stress.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2939003/" 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/PMC2939003/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lee, Byung-Hoon -- Lee, Min Jae -- Park, Soyeon -- Oh, Dong-Chan -- Elsasser, Suzanne -- Chen, Ping-Chung -- Gartner, Carlos -- Dimova, Nevena -- Hanna, John -- Gygi, Steven P -- Wilson, Scott M -- King, Randall W -- Finley, Daniel -- DK082906/DK/NIDDK NIH HHS/ -- GM65592/GM/NIGMS NIH HHS/ -- GM66492/GM/NIGMS NIH HHS/ -- NS047533/NS/NINDS NIH HHS/ -- P30 NS057098/NS/NINDS NIH HHS/ -- P30 NS057098-049002/NS/NINDS NIH HHS/ -- R01 GM066492/GM/NIGMS NIH HHS/ -- R01 GM067945/GM/NIGMS NIH HHS/ -- R01 NS047533/NS/NINDS NIH HHS/ -- R01 NS047533-06A2/NS/NINDS NIH HHS/ -- England -- Nature. 2010 Sep 9;467(7312):179-84. doi: 10.1038/nature09299.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cell Biology, Harvard Medical School, 240 Longwood Avenue, Boston, Massachusetts 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20829789" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Line ; Cells, Cultured ; Humans ; Mice ; Proteasome Endopeptidase Complex/*metabolism ; Proteins/*metabolism ; Ubiquitin Thiolesterase/*antagonists & inhibitors ; Ubiquitination
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  • 5
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    Quantitative proteomics identifies NCOA4 as the cargo receptor mediating ferritinophagy (2014)
    Nature Publishing Group (NPG)
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    Publication Date: 2014-04-04
    Description: Autophagy, the process by which proteins and organelles are sequestered in double-membrane structures called autophagosomes and delivered to lysosomes for degradation, is critical in diseases such as cancer and neurodegeneration. Much of our understanding of this process has emerged from analysis of bulk cytoplasmic autophagy, but our understanding of how specific cargo, including organelles, proteins or intracellular pathogens, are targeted for selective autophagy is limited. Here we use quantitative proteomics to identify a cohort of novel and known autophagosome-enriched proteins in human cells, including cargo receptors. Like known cargo receptors, nuclear receptor coactivator 4 (NCOA4) was highly enriched in autophagosomes, and associated with ATG8 proteins that recruit cargo-receptor complexes into autophagosomes. Unbiased identification of NCOA4-associated proteins revealed ferritin heavy and light chains, components of an iron-filled cage structure that protects cells from reactive iron species but is degraded via autophagy to release iron through an unknown mechanism. We found that delivery of ferritin to lysosomes required NCOA4, and an inability of NCOA4-deficient cells to degrade ferritin led to decreased bioavailable intracellular iron. This work identifies NCOA4 as a selective cargo receptor for autophagic turnover of ferritin (ferritinophagy), which is critical for iron homeostasis, and provides a resource for further dissection of autophagosomal cargo-receptor connectivity.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4180099/" 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/PMC4180099/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mancias, Joseph D -- Wang, Xiaoxu -- Gygi, Steven P -- Harper, J Wade -- Kimmelman, Alec C -- GM070565/GM/NIGMS NIH HHS/ -- GM095567/GM/NIGMS NIH HHS/ -- P50 CA127003/CA/NCI NIH HHS/ -- R01 CA157490/CA/NCI NIH HHS/ -- R01 GM070565/GM/NIGMS NIH HHS/ -- R01 GM095567/GM/NIGMS NIH HHS/ -- R01CA157490/CA/NCI NIH HHS/ -- England -- Nature. 2014 May 1;509(7498):105-9. doi: 10.1038/nature13148. Epub 2014 Mar 30.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉1] Division of Genomic Stability and DNA Repair, Department of Radiation Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts 02215, USA [2] Department of Cell Biology, Harvard Medical School, Boston, Massachusetts 02115, USA [3] Harvard Radiation Oncology Program, Boston, Massachusetts 02115, USA [4] Department of Radiation Oncology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts 02215, USA. ; Division of Genomic Stability and DNA Repair, Department of Radiation Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts 02215, USA. ; Department of Cell Biology, Harvard Medical School, Boston, Massachusetts 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24695223" target="_blank"〉PubMed〈/a〉
    Keywords: Adaptor Proteins, Signal Transducing/metabolism ; *Autophagy ; Biological Availability ; Ferritins/chemistry/*metabolism ; Homeostasis ; Humans ; Iron/metabolism ; Lysosomes/metabolism ; Microfilament Proteins/metabolism ; Nuclear Receptor Coactivators/deficiency/genetics/*metabolism ; Phagosomes/*metabolism ; Protein Binding ; Protein Transport ; *Proteomics ; Substrate Specificity
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 6
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    Global analysis of Cdk1 substrate phosphorylation sites provides insights into evolution (2009)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 2009-09-26
    Description: To explore the mechanisms and evolution of cell-cycle control, we analyzed the position and conservation of large numbers of phosphorylation sites for the cyclin-dependent kinase Cdk1 in the budding yeast Saccharomyces cerevisiae. We combined specific chemical inhibition of Cdk1 with quantitative mass spectrometry to identify the positions of 547 phosphorylation sites on 308 Cdk1 substrates in vivo. Comparisons of these substrates with orthologs throughout the ascomycete lineage revealed that the position of most phosphorylation sites is not conserved in evolution; instead, clusters of sites shift position in rapidly evolving disordered regions. We propose that the regulation of protein function by phosphorylation often depends on simple nonspecific mechanisms that disrupt or enhance protein-protein interactions. The gain or loss of phosphorylation sites in rapidly evolving regions could facilitate the evolution of kinase-signaling circuits.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2813701/" 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/PMC2813701/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Holt, Liam J -- Tuch, Brian B -- Villen, Judit -- Johnson, Alexander D -- Gygi, Steven P -- Morgan, David O -- GM037049/GM/NIGMS NIH HHS/ -- GM50684/GM/NIGMS NIH HHS/ -- HG3456/HG/NHGRI NIH HHS/ -- R01 GM069901/GM/NIGMS NIH HHS/ -- R01 GM069901-06/GM/NIGMS NIH HHS/ -- R01 HG003456/HG/NHGRI NIH HHS/ -- R01 HG003456-06/HG/NHGRI NIH HHS/ -- New York, N.Y. -- Science. 2009 Sep 25;325(5948):1682-6. doi: 10.1126/science.1172867.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Departments of Physiology and Biochemistry and Biophysics, University of California, San Francisco, San Francisco, CA 94158, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19779198" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Motifs ; Amino Acid Sequence ; Ascomycota/chemistry/genetics/metabolism ; *Biological Evolution ; CDC2 Protein Kinase/antagonists & inhibitors/*metabolism ; *Cell Cycle ; Cell Physiological Processes ; Computational Biology ; *Evolution, Molecular ; Molecular Sequence Data ; Phosphopeptides/chemistry/*metabolism ; Phosphorylation ; Phylogeny ; Protein Conformation ; Protein Structure, Tertiary ; Saccharomyces cerevisiae/chemistry/genetics/metabolism ; Saccharomyces cerevisiae Proteins/chemistry/*metabolism ; *Signal Transduction ; Substrate Specificity
    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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    Landscape of the PARKIN-dependent ubiquitylome in response to mitochondrial depolarization (2013)
    Nature Publishing Group (NPG)
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    Publication Date: 2013-03-19
    Description: The PARKIN ubiquitin ligase (also known as PARK2) and its regulatory kinase PINK1 (also known as PARK6), often mutated in familial early-onset Parkinson's disease, have central roles in mitochondrial homeostasis and mitophagy. Whereas PARKIN is recruited to the mitochondrial outer membrane (MOM) upon depolarization via PINK1 action and can ubiquitylate porin, mitofusin and Miro proteins on the MOM, the full repertoire of PARKIN substrates--the PARKIN-dependent ubiquitylome--remains poorly defined. Here we use quantitative diGly capture proteomics (diGly) to elucidate the ubiquitylation site specificity and topology of PARKIN-dependent target modification in response to mitochondrial depolarization. Hundreds of dynamically regulated ubiquitylation sites in dozens of proteins were identified, with strong enrichment for MOM proteins, indicating that PARKIN dramatically alters the ubiquitylation status of the mitochondrial proteome. Using complementary interaction proteomics, we found depolarization-dependent PARKIN association with numerous MOM targets, autophagy receptors, and the proteasome. Mutation of the PARKIN active site residue C431, which has been found mutated in Parkinson's disease patients, largely disrupts these associations. Structural and topological analysis revealed extensive conservation of PARKIN-dependent ubiquitylation sites on cytoplasmic domains in vertebrate and Drosophila melanogaster MOM proteins. These studies provide a resource for understanding how the PINK1-PARKIN pathway re-sculpts the proteome to support mitochondrial homeostasis.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3641819/" 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/PMC3641819/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sarraf, Shireen A -- Raman, Malavika -- Guarani-Pereira, Virginia -- Sowa, Mathew E -- Huttlin, Edward L -- Gygi, Steven P -- Harper, J Wade -- CA139885/CA/NCI NIH HHS/ -- GM067945/GM/NIGMS NIH HHS/ -- GM070565/GM/NIGMS NIH HHS/ -- GM095567/GM/NIGMS NIH HHS/ -- R01 GM067945/GM/NIGMS NIH HHS/ -- R01 GM070565/GM/NIGMS NIH HHS/ -- R01 GM095567/GM/NIGMS NIH HHS/ -- England -- Nature. 2013 Apr 18;496(7445):372-6. doi: 10.1038/nature12043. Epub 2013 Mar 17.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cell Biology, Harvard Medical School, 240 Longwood Avenue, Boston, Massachusetts 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/23503661" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Line ; Drosophila Proteins/metabolism ; Drosophila melanogaster/metabolism ; Humans ; *Membrane Potential, Mitochondrial ; Mice ; Mitochondria/chemistry/*metabolism ; Mitochondrial Membranes/*metabolism ; Mitochondrial Proteins/*metabolism ; Protein Kinases/metabolism ; Proteome/*metabolism ; Proteomics ; Ubiquitin-Protein Ligases/*metabolism ; *Ubiquitination
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  • 8
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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)
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    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
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  • 9
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    A molecular determinant for the establishment of sister chromatid cohesion (2008)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2008-07-26
    Description: Chromosome segregation, transcriptional regulation, and repair of DNA double-strand breaks require the cohesin protein complex. Cohesin holds the replicated chromosomes (sister chromatids) together to mediate sister chromatid cohesion. The mechanism of how cohesion is established is unknown. We found that in budding yeast, the head domain of the Smc3p subunit of cohesin is acetylated by the Eco1p acetyltransferase at two evolutionarily conserved residues, promoting the chromatin-bound cohesin to tether sister chromatids. Smc3p acetylation is induced in S phase after the chromatin loading of cohesin and is suppressed in G(1) and G(2)/M. Smc3 head acetylation and its cell cycle regulation provide important insights into the biology and mechanism of cohesion establishment.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Unal, Elcin -- Heidinger-Pauli, Jill M -- Kim, Woong -- Guacci, Vincent -- Onn, Itay -- Gygi, Steven P -- Koshland, Douglas E -- Howard Hughes Medical Institute/ -- New York, N.Y. -- Science. 2008 Jul 25;321(5888):566-9. doi: 10.1126/science.1157880.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute and Department of Embryology, Carnegie Institution, 3520 San Martin Drive, Baltimore, MD 21218, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18653894" target="_blank"〉PubMed〈/a〉
    Keywords: Acetylation ; Acetyltransferases/genetics/*metabolism ; Amino Acid Sequence ; Amino Acid Substitution ; Cell Cycle Proteins/chemistry/genetics/*metabolism ; Cell Division ; Chondroitin Sulfate Proteoglycans/chemistry/genetics/*metabolism ; Chromatids/*physiology ; Chromatin/metabolism ; Chromosomal Proteins, Non-Histone/chemistry/genetics/*metabolism ; Chromosomes, Fungal/*physiology ; G1 Phase ; G2 Phase ; Immunoprecipitation ; Lysine/metabolism ; Molecular Sequence Data ; Mutation ; Nuclear Proteins/genetics/*metabolism ; Protein Structure, Tertiary ; S Phase ; Saccharomyces cerevisiae/genetics/growth & development/*physiology ; Saccharomyces cerevisiae Proteins/chemistry/genetics/*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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  • 10
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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
    Published by American Association for the Advancement of Science (AAAS)
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