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  • 1
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    A strategy for modulation of enzymes in the ubiquitin system (2013)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2013-01-05
    Description: The ubiquitin system regulates virtually all aspects of cellular function. We report a method to target the myriad enzymes that govern ubiquitination of protein substrates. We used massively diverse combinatorial libraries of ubiquitin variants to develop inhibitors of four deubiquitinases (DUBs) and analyzed the DUB-inhibitor complexes with crystallography. We extended the selection strategy to the ubiquitin conjugating (E2) and ubiquitin ligase (E3) enzymes and found that ubiquitin variants can also enhance enzyme activity. Last, we showed that ubiquitin variants can bind selectively to ubiquitin-binding domains. Ubiquitin variants exhibit selective function in cells and thus enable orthogonal modulation of specific enzymatic steps in the ubiquitin system.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3815447/" 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/PMC3815447/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ernst, Andreas -- Avvakumov, George -- Tong, Jiefei -- Fan, Yihui -- Zhao, Yanling -- Alberts, Philipp -- Persaud, Avinash -- Walker, John R -- Neculai, Ana-Mirela -- Neculai, Dante -- Vorobyov, Andrew -- Garg, Pankaj -- Beatty, Linda -- Chan, Pak-Kei -- Juang, Yu-Chi -- Landry, Marie-Claude -- Yeh, Christina -- Zeqiraj, Elton -- Karamboulas, Konstantina -- Allali-Hassani, Abdellah -- Vedadi, Masoud -- Tyers, Mike -- Moffat, Jason -- Sicheri, Frank -- Pelletier, Laurence -- Durocher, Daniel -- Raught, Brian -- Rotin, Daniela -- Yang, Jianhua -- Moran, Michael F -- Dhe-Paganon, Sirano -- Sidhu, Sachdev S -- 092076/Wellcome Trust/United Kingdom -- 092381/Wellcome Trust/United Kingdom -- 1R01NS072420-01/Canadian Institutes of Health Research/Canada -- MOP-102536/Canadian Institutes of Health Research/Canada -- MOP-111149/Canadian Institutes of Health Research/Canada -- MOP-13494/Canadian Institutes of Health Research/Canada -- MOP-57795/Canadian Institutes of Health Research/Canada -- R01 NS072420/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 2013 Feb 1;339(6119):590-5. doi: 10.1126/science.1230161. Epub 2013 Jan 3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Terrence Donnelly Center for Cellular and Biomolecular Research, University of Toronto, 160 College Street, Toronto, Ontario, Canada.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/23287719" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; *Combinatorial Chemistry Techniques ; Conserved Sequence ; Drug Design ; Endopeptidases/chemistry/*metabolism ; HEK293 Cells ; Humans ; Molecular Sequence Data ; Protease Inhibitors/chemistry/*isolation & purification/pharmacology ; Protein Conformation ; Protein Structure, Secondary ; Small Molecule Libraries ; Ubiquitin/chemistry/genetics/*metabolism ; Ubiquitin Thiolesterase/chemistry/*metabolism ; Ubiquitin-Conjugating Enzymes/chemistry/metabolism ; Ubiquitin-Protein Ligases/chemistry/metabolism ; Ubiquitination/*drug effects
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 2
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    Architecture of the symmetric core of the nuclear pore (2016)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2016-04-16
    Description: The nuclear pore complex (NPC) controls the transport of macromolecules between the nucleus and cytoplasm, but its molecular architecture has thus far remained poorly defined. We biochemically reconstituted NPC core protomers and elucidated the underlying protein-protein interaction network. Flexible linker sequences, rather than interactions between the structured core scaffold nucleoporins, mediate the assembly of the inner ring complex and its attachment to the NPC coat. X-ray crystallographic analysis of these scaffold nucleoporins revealed the molecular details of their interactions with the flexible linker sequences and enabled construction of full-length atomic structures. By docking these structures into the cryoelectron tomographic reconstruction of the intact human NPC and validating their placement with our nucleoporin interactome, we built a composite structure of the NPC symmetric core that contains ~320,000 residues and accounts for ~56 megadaltons of the NPC's structured mass. Our approach provides a paradigm for the structure determination of similarly complex macromolecular assemblies.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lin, Daniel H -- Stuwe, Tobias -- Schilbach, Sandra -- Rundlet, Emily J -- Perriches, Thibaud -- Mobbs, George -- Fan, Yanbin -- Thierbach, Karsten -- Huber, Ferdinand M -- Collins, Leslie N -- Davenport, Andrew M -- Jeon, Young E -- Hoelz, Andre -- 5 T32 GM07616/GM/NIGMS NIH HHS/ -- ACB-12002/PHS HHS/ -- AGM-12006/PHS HHS/ -- R01 GM111461/GM/NIGMS NIH HHS/ -- R01-GM111461/GM/NIGMS NIH HHS/ -- T32 GM007616/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2016 Apr 15;352(6283):aaf1015. doi: 10.1126/science.aaf1015. Epub 2016 Apr 14.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Chemistry and Chemical Engineering, California Institute of Technology, 1200 East California Boulevard, Pasadena, CA 91125, USA. ; Division of Chemistry and Chemical Engineering, California Institute of Technology, 1200 East California Boulevard, Pasadena, CA 91125, USA. hoelz@caltech.edu.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/27081075" target="_blank"〉PubMed〈/a〉
    Keywords: Active Transport, Cell Nucleus ; Amino Acid Sequence ; Cryoelectron Microscopy ; Crystallography, X-Ray ; Cytoplasm/metabolism ; Electron Microscope Tomography ; Fungal Proteins/chemistry/genetics/metabolism ; Humans ; Molecular Sequence Data ; Nuclear Pore/chemistry/*metabolism/*ultrastructure ; Nuclear Pore Complex Proteins/chemistry/genetics/*metabolism ; *Protein Interaction Maps ; Protein Structure, Tertiary ; Protein Subunits/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)
    Location Call Number Expected Availability
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