Human IGFBP3 mRNA encodes the human insulin like growth factor binding protein 3 (IGFBP3) protein, a member of the insulin-like growth factor binding protein (IGFBP) family. IGFBP3 can form a ternary complex with insulin-like growth factor acid-labile subunit (IGFALS) and either insulin-like growth factor (IGF) I or II. In this form, it circulates in the plasma, prolonging the half-life of IGFs and altering their interaction with cell surface receptors.
