Insulin-Like Growth Factor 1 Receptor Beta Chain

**Semantic type:** Amino Acid, Peptide, or Protein|Enzyme|Receptor

**Definition:** Insulin-like growth factor 1 receptor beta chain (627 aa, ~71 kDa) is encoded by the human IGF1R gene. This protein plays a role in growth factor-mediated receptor tyrosine kinase activity.

**Synonyms:** - CD221 Antigen Beta Chain - IGF-IR Beta - IGF-IR Beta Chain - IGF1R Beta - IGF1R Beta Chain