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Genomes and Genes | C M PickartSummaryAffiliation: Johns Hopkins University Country: USA Publications
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Publications
Ubiquitin enters the new millenniumC M Pickart
Department of Biochemistry and Molecular Biology, Bloomberg School of Public Health, Johns Hopkins University, 615 North Wolfe Street, Baltimore, MD 21205, USA
Mol Cell 8:499-504. 2001..New findings show that besides signaling proteolysis, ubiquitination can be a signal for trafficking, kinase activation, and other nonproteolytic fates...
Mechanisms underlying ubiquitinationC M Pickart
School of Public Health, Johns Hopkins University, 615 North Wolfe Street, Baltimore, Maryland 21205, USA
Annu Rev Biochem 70:503-33. 2001..The new findings shed light on many aspects of E3 structure, function, and mechanism, but also emphasize that key features of E3 catalysis remain to be elucidated...
Ubiquitin in chainsC M Pickart
Dept of Biochemistry and Molecular Biology, School of Public Health, Johns Hopkins University, Baltimore, MD 21205, USA
Trends Biochem Sci 25:544-8. 2000..Recent results have revealed important determinants of polyubiquitin-chain recognition by proteasomes, helping to explain the biological rationale behind this novel signaling mechanism...
In vitro assembly and recognition of Lys-63 polyubiquitin chainsR M Hofmann
Department of Biochemistry and Molecular Biology, School of Public Health, Johns Hopkins University, Baltimore, Maryland 21205, USA
J Biol Chem 276:27936-43. 2001....
Molecular insights into polyubiquitin chain assembly: crystal structure of the Mms2/Ubc13 heterodimerA P VanDemark
Department of Biophysics and Biophysical Chemistry, School of Medicine, Johns Hopkins University, Baltimore, MD, USA
Cell 105:711-20. 2001..Selective mutations in the channels suggest a molecular model for specificity in the assembly of Lys63-linked polyubiquitin signals...
A HECT domain E3 enzyme assembles novel polyubiquitin chainsJ You
Department of Biochemistry and Molecular Biology, School of Public Health, Johns Hopkins University, Baltimore, Maryland 21205, USA
J Biol Chem 276:19871-8. 2001....
Noncanonical MMS2-encoded ubiquitin-conjugating enzyme functions in assembly of novel polyubiquitin chains for DNA repairR M Hofmann
Department of Biochemistry, School of Public Health, Johns Hopkins University, Baltimore, Maryland 21205, USA
Cell 96:645-53. 1999..These findings support a model in which an Mms2p/Ubc13p complex assembles novel polyubiquitin chains for signaling in DNA repair, and they suggest that UEV proteins may act to increase diversity and selectivity in ubiquitin conjugation...
Crystal structure of the human ubiquitin-like protein NEDD8 and interactions with ubiquitin pathway enzymesF G Whitby
Department of Biochemistry, University of Utah, Salt Lake City, Utah 84132, USA
J Biol Chem 273:34983-91. 1998..One such residue, Ala-72 (Arg in ubiquitin), is shown to perform a key role in selecting against reaction with the ubiquitin E1 enzyme, thereby acting to prevent the inappropriate diversion of NEDD8 into ubiquitin-specific pathways...
Mechanism of ubiquitin conjugating enzyme E2-230K: catalysis involving a thiol relay?E S Berleth
Department of Biochemistry, State University of New York at Buffalo 14214, USA
Biochemistry 35:1664-71. 1996..In this model, E2-230K functions as an E2-E3 hybrid...
Core domain mutation (S86Y) selectively inactivates polyubiquitin chain synthesis catalyzed by E2-25KL D Mastrandrea
Department of Biochemistry, State University of New York, Buffalo 14214, USA
Biochemistry 37:9784-92. 1998..These results suggest that unique residues proximal to E2 active sites may influence specific function by mediating intramolecular interactions...
Huntingtin is ubiquitinated and interacts with a specific ubiquitin-conjugating enzymeM A Kalchman
Department of Medical Genetics, University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z4
J Biol Chem 271:19385-94. 1996..The huntingtin-E2-25K interaction is not obviously modulated by CAG length. We also demonstrate that huntingtin is ubiquitinated. These findings have implications for the regulated catabolism of the gene product for HD...
Induction of ubiquitin-conjugating enzymes during terminal erythroid differentiationI Wefes
Department of Cell Biology, Harvard Medical School, Boston, MA 02115, USA
Proc Natl Acad Sci U S A 92:4982-6. 1995..These data implicate regulated components of the ubiquitin conjugation machinery in erythroid differentiation...
Characterization of a cDNA clone encoding E2-20K, a murine ubiquitin-conjugating enzymeI Wefes
Department of Cell Biology, Harvard Medical School, Boston, MA 02115, USA
Gene 163:321-2. 1995..Here we report the sequence of a murine cDNA encoding E2-20K. Northern blot analysis identified polyadenylated transcripts of 3.5 and 6.5 kb which are present at comparable levels in many nonerythroid tissues...
Several mammalian ubiquitin carrier proteins, but not E2(20K), are related to the 20-kDa yeast E2, RAD6E S Berleth
Department of Biochemistry, SUNY, Buffalo 14214
Biochem Biophys Res Commun 171:705-10. 1990..RAD6 and E2-20K were also shown to multi-ubiquitinate histones by different mechanisms...
Isolation of a cDNA encoding a mammalian multiubiquitinating enzyme (E225K) and overexpression of the functional enzyme in Escherichia coliZ J Chen
Department of Biochemistry, State University of New York, Buffalo 14214
J Biol Chem 266:15698-704. 1991..The availability of a cloned cDNA will allow us to assess the physiological role of E2(25K)...
Structure of a diubiquitin conjugate and a model for interaction with ubiquitin conjugating enzyme (E2)W J Cook
Department of Pathology, University of Alabama, Birmingham 35294
J Biol Chem 267:16467-71. 1992..The structure of the diubiquitin conjugate suggests determinants for recognition of multiubiquitin chains. A model for the interaction of diubiquitin and a ubiquitin conjugating enzyme (E2) is proposed...
