期刊
BIOCHEMICAL SOCIETY TRANSACTIONS
卷 48, 期 1, 页码 123-135出版社
PORTLAND PRESS LTD
DOI: 10.1042/BST20190357
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资金
- `Ministerio de Ciencia, Innovacion y Universidades' [PGC2018-098423-B-I00]
The small ubiquitin-like modifier (SUMO) is a post-translational modifier that can regulate the function of hundreds of proteins inside the cell. SUMO belongs to the ubiquitin-tike family of proteins that can be attached to target proteins by a dedicated enzymatic cascade pathway formed by E1, E2 and E3 enzymes. SUMOylation is involved in many cellular pathways, having in most instances essential roles for their correct function. In this review, we want to highlight the latest research on the molecular mechanisms that lead to the formation of the isopeptidic bond between the lysine substrate and the C-terminus of SUMO. In particular, we will focus on the recent discoveries on the catalytic function of the SUMO E3 ligases revealed by structural and biochemical approaches. Also, we will discuss important questions regarding specificity in SUMO conjugation, which it still remains as a major issue due to the small number of SUMO E3 ligases discovered so far, in contrast with the large number of SUMO conjugated proteins in the cell.
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