期刊
CELLULAR AND MOLECULAR LIFE SCIENCES
卷 61, 期 13, 页码 1546-1561出版社
SPRINGER BASEL AG
DOI: 10.1007/s00018-004-4129-5
关键词
ubiquitin; ubiquitin protein ligase; ubiquitylation; RING finger; HECT; proteasome
The capacity for exquisite regulation of ubiquitylation provides eukaryotic cells with a means to fine-tune both protein function and levels. This complex set of processes affects myriad proteins and potentially impacts all cellular processes. Ubiquitylation is brought about through multienzyme processes, with specificity conferred primarily by interactions of substrates with specific ubiquitin protein ligases (E3s) in association with ubiquitin conjugating enzymes (E2s). Regulation of ubiquitylation occurs at multiple levels, including E2-E3 interactions, substrate recognition, chain elongation, binding of ubiquitin to conserved motifs and deubiquityation. This review presents the fundamentals of the ubiquitin conjugating system.
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