Document Detail


The Ubc3 (Cdc34) ubiquitin-conjugating enzyme is ubiquitinated and phosphorylated in vivo.
MedLine Citation:
PMID:  8164658     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The transition from G1 to S phase of the cell cycle in Saccharomyces cerevisiae requires the activity of the Ubc3 (Cdc34) ubiquitin-conjugating enzyme. S. cerevisiae cells lacking a functional UBC3 (CDC34) gene are able to execute the Start function that initiates the cell cycle but fail to form a mitotic spindle or enter S phase. The Ubc3 (Cdc34) enzyme has previously been shown to catalyze the attachment of multiple ubiquitin molecules to model substrates, suggesting that the role of this enzyme in cell cycle progression depends on its targeting an endogenous protein(s) for degradation. In this report, we demonstrate that the Ubc3 (Cdc34) protein is itself a substrate for both ubiquitination and phosphorylation. Immunochemical localization of the gene product to the nucleus renders it likely that the relevant substrates similarly reside within the nucleus.
Authors:
M G Goebl; L Goetsch; B Byers
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Molecular and cellular biology     Volume:  14     ISSN:  0270-7306     ISO Abbreviation:  Mol. Cell. Biol.     Publication Date:  1994 May 
Date Detail:
Created Date:  1994-05-25     Completed Date:  1994-05-25     Revised Date:  2010-09-13    
Medline Journal Info:
Nlm Unique ID:  8109087     Medline TA:  Mol Cell Biol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  3022-9     Citation Subset:  IM    
Affiliation:
Department of Biochemistry and Molecular Biology, Indiana University School of Medicine, Indianapolis.
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MeSH Terms
Descriptor/Qualifier:
Blotting, Western
Cell Cycle / genetics*
Cell Nucleus / enzymology,  ultrastructure
Fungal Proteins / biosynthesis
G1 Phase
Genes, Fungal
Ligases / analysis,  biosynthesis*,  genetics
Phosphorylation
Plasmids
Protein Processing, Post-Translational*
Restriction Mapping
S Phase
Saccharomyces cerevisiae / cytology,  enzymology*,  genetics*
Sequence Deletion
Ubiquitin-Protein Ligase Complexes*
Ubiquitin-Protein Ligases
Ubiquitins / metabolism*
Grant Support
ID/Acronym/Agency:
AG00057/AG/NIA NIH HHS; GM18541/GM/NIGMS NIH HHS; GM45460/GM/NIGMS NIH HHS
Chemical
Reg. No./Substance:
0/Fungal Proteins; 0/Ubiquitins; EC 6.-/Ligases; EC 6.3.2.19/Ubiquitin-Protein Ligase Complexes; EC 6.3.2.19/Ubiquitin-Protein Ligases; EC 6.3.2.19/anaphase-promoting complex
Comments/Corrections

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