Domain

SOCS6, SOCS box domain (IPR037345)

Short name: SOCS6_SOCS

Overlapping homologous superfamilies

Domain relationships

Description

This entry represents the SOCS box domain of SOCS6.

Suppressor of cytokine signaling (SOCS) family proteins form part of a classical negative feedback system that regulates cytokine signal transduction. However, SOCS6 does not interact with cytokine signaling intermediate molecules or inhibit cytokine receptor signaling. SOCS6 can interact with c-KIT, a receptor tyrosine kinase that mediates the cellular response to stem cell factor (SCF). SOCS6 has ubiquitin ligase activity toward c-KIT and regulates c-KIT protein turnover in cells, suppressing c-KIT-dependent pathways [PMID: 21030588]. SOCS6 negatively regulates receptor tyrosine kinase Flt3 activation, the downstream Erk signaling pathway, and cell proliferation [PMID: 22952242].

The general function of the SOCS box is the recruitment of the ubiquitin-transferase system. The SOCS box interacts with Elongins B and C, Cullin-5 or Cullin-2, Rbx-1, and E2. Therefore, SOCS-box-containing proteins probably function as E3 ubiquitin ligases and mediate the degradation of proteins associated through their N-terminal regions [PMID: 9869640, PMID: 16675548].

GO terms

Biological Process

GO:0016567 protein ubiquitination
GO:0040008 regulation of growth

Molecular Function

No terms assigned in this category.

Cellular Component

No terms assigned in this category.

Contributing signatures

Signatures from InterPro member databases are used to construct an entry.
CDD