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Trends Biochem Sci. 2002 May;27(5):235-41.

The SOCS box: a tale of destruction and degradation.

Author information

1
The Walter and Eliza Hall Institute of Medical Research and The Cooperative Research Centre for Cellular Growth Factors, Parkville, Victoria, Australia.

Abstract

Although initially identified in the suppressor of cytokine signaling (SOCS) family of proteins, the C-terminal SOCS box has now been identified in more than 40 proteins in nine different families. Growing evidence suggests that the SOCS box, similar to the F-box, acts as a bridge between specific substrate-binding domains and the more generic proteins that comprise a large family of E3 ubiquitin protein ligases. In this way, SOCS proteins regulate protein turnover by targeting proteins for polyubiquitination and, therefore, for proteasome-mediated degradation.

PMID:
12076535
DOI:
10.1016/s0968-0004(02)02085-6
[Indexed for MEDLINE]

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