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SOCS (suppressors of cytokine signaling) box of ASB15-like proteins. ASB family members have a C-terminal SOCS box and an N-terminal ankyrin-related sequence. Human ASB15 is expressed predominantly in skeletal muscle and participates in the regulation of protein turnover and muscle cell development by stimulating protein synthesis and regulating differentiation of muscle cells. 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.
Jiyao W et al.(2023). "The conserved domain database in 2023.",