SOCS family proteins form part of a classical negative feedback system that regulates cytokine signal transduction. SOCS2 appears to be a negative regulator in the growth hormone/IGF1 signaling pathway. 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. Interacts with IGF1 receptor, prolactin receptor and growth hormone (GH) receptor. Associates with the Elongin BC complex. By a subset of cytokines, including EPO/erythropoietin and CSF2/GM-CSF. High expression in heart, placenta, lung, kidney and prostate. Note: This description may include information from UniProtKB.
Cellular Component: cytoplasm; cytosol
Molecular Function: insulin-like growth factor receptor binding; protein binding; growth hormone receptor binding; SH3/SH2 adaptor activity; JAK pathway signal transduction adaptor activity
Biological Process: positive regulation of signal transduction; regulation of signal transduction; protein ubiquitination; regulation of cell growth; JAK-STAT cascade; negative regulation of JAK-STAT cascade; response to estradiol stimulus; negative regulation of apoptosis; cellular response to hormone stimulus; aging
SS: The number of records in which this modification site was determined using site-specific methods. SS methods include amino acid sequencing, site-directed mutagenesis, modification site-specific antibodies, specific MS strategies, etc.