SGD Paper 
Dennissen FJ, et al. (2011) Mutant ubiquitin (UBB+1) associated with neurodegenerative disorders is hydrolyzed by ubiquitin C-terminal hydrolase L3 (UCH-L3). FEBS Lett 585(16):2568-74
Abstract: Mutant ubiquitin (UBB(+1)) accumulates in the hallmarks of tauopathies and polyglutamine diseases. We show that the deubiquitinating enzyme YUH1 of Saccharomyces cerevisiae and its mouse and human ortholog UCH-L3 are able to hydrolyze the C-terminal extension of UBB(+1). This yields another dysfunctional ubiquitin molecule (UB(G76Y)) with biochemical properties similar to full length UBB(+1). UBB(+1) may be detected in post-mortem tissue due to impaired C-terminal truncation of UBB(+1). Although the level of UCH-L3 protein in several neurodegenerative diseases is unchanged, we show that in vitro oxidation of recombinant UCH-L3 impairs its deubiquitinating activity. We postulate that impaired UCH-L3 function may contribute to the accumulation of full length UBB(+1) in various pathologies.
| Status: Published | Type: Journal Article | PubMed ID: 21762696 |
Topics addressed in this paper
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