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In this article, we summarize Arabidopsis genes encoding ubiquitin, ubiquitin-activating enzyme (E1), ubiquitin-conjugating enzymes (E2s) and an additional selected set of proteins related to ubiquitylation. We emphasize comparisons to components from Saccharomyces cerevisiae, with occasional reference to animals. Among the E1 and E2s, Arabidopsis usually(More)
Mutants in the PRT1 gene of Arabidopsis thaliana are impaired in the degradation of a normally short-lived intracellular protein that contains a destabilizing N-terminal residue. Proteins bearing such residues are the substrates of an ubiquitin-dependent proteolytic system called the N-end rule pathway. The chromosomal position of PRT1 was determined, and(More)
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