FEATURES

DESCRIPTION

Also known as SOCS3_MOUSE, Socs3, Cis3, Cish3. SOCS family proteins form part of a classical negative feedback system that regulates cytokine signal transduction. SOCS3 is involved in negative regulation of cytokines that signal through the JAK/STAT pathway. Inhibits cytokine signal transduction by binding to tyrosine kinase receptors including IL6ST/gp130, LIF, erythropoietin, insulin, IL12, GCSF and leptin receptors (PubMed:10821852, PubMed:12754505, PubMed:9889194). Binding to JAK2 inhibits its kinase activity and regulates IL6 signaling (PubMed:12754505, PubMed:9889194). Suppresses fetal liver erythropoiesis (PubMed:10490101). Regulates onset and maintenance of allergic responses mediated by T-helper type 2 cells (PubMed:12847520). Probable substrate recognition component of a SCF-like ECS (Elongin BC-CUL2/5-SOCS-box protein) E3 ubiquitin-protein ligase complex which mediates the ubiquitination and subsequent proteasomal degradation of target proteins (By similarity). Interacts with multiple activated proteins of the tyrosine kinase signaling pathway including IGF1 receptor, insulin receptor and JAK2. Binding to JAK2 is mediated through the KIR and SH2 domains to a phosphorylated tyrosine residue within the JAK2 JH1 domain (By similarity). Binds specific activated tyrosine residues of the leptin, EPO, IL12, GSCF and gp130 receptors (PubMed:10882725). Interaction with CSNK1E stabilizes SOCS3 protein (By similarity). Component of the probable ECS(SOCS3) E3 ubiquitin-protein ligase complex which contains CUL5, RNF7/RBX2, elongin BC complex and SOCS3 (By similarity). Interacts with CUL5, RNF7, ELOB and ELOC (By similarity). Interacts with FGFR3 (By similarity). Interacts with INSR (PubMed:10821852). Interacts with BCL10; this interaction may interfere with BCL10-binding with PELI2 (PubMed:15213237). Interacts with NOD2 (via CARD domain); the interaction promotes NOD2 degradation (PubMed:23019338).

EXTERNAL LINKS

Socs3

Suppressor of cytokine signaling 3

Socs3

Molecular Synopsis