Reference: Wright DA, et al. (1996) Association of human fas (CD95) with a ubiquitin-conjugating enzyme (UBC-FAP). J Biol Chem 271(49):31037-43

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Abstract


A novel human ubiquitin conjugating enzyme (UBC) was found to associate with Fas (CD95). The mRNA for this UBC Fas-associated protein (FAP) was widely expressed in human tissues, and the protein was identified in several mammalian cell lines. UBC-FAP shows strong homology to two recently identified UBCs, Hus5 and Ubc9, which control yeast cell cycle progression. UBC-FAP, but not an active site mutant, complemented ubc9-1(ts) mutants. This suggests that UBC-FAP is a human homologue of Ubc9, possesses ubiquitin conjugating activity, and may play an important role in mammalian cell cycle regulation. A single amino acid substitution in the death domain of Fas that abolishes Fas-mediated apoptosis also abolished Fas association with UBC-FAP, suggesting that UBC-FAP may play a role in Fas signal transduction. The sequence of UBC-FAP is identical to that of HsUbc9, a UBC recently shown to interact with Rad51.

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Journal Article | Research Support, Non-U.S. Gov't | Research Support, U.S. Gov't, P.H.S.
Authors
Wright DA, Futcher B, Ghosh P, Geha RS
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