IGF1R (CD221) Proteins

Protein Information

IGF1R, also known as Insulin-like Growth Factor 1 (IGF-1) Receptor, is a receptor tyrosine kinase activated by IGF-1 and IGF-2. IGFR has been implicated in a variety of cancers. The protein is a tetramer consisting of two alpha, and two beta subunits. The alpha-subunits binds to insulin growth factor 1 with higher affinity than to insulin growth factor 2. Binding results in a conformational change, followed by autophosphorylation of IGF-1R at positions 1134, 1135, 1136. The activated IGF-1R in turn, causes phosphorylation of substrate proteins, followed by sequential activation of RAS, RAF, and mitogen-activated protein kinase isoforms ERK, p38, and JNK, leading to the transcription of genes that drive proliferation.

Synonyms

A330103N21Rik; CD221; CD221 antigen; D930020L01; hyft; IGF 1 receptor; IGF 1R; IGF1R; IGF-1R; IGF-I receptor; IGFIR; IGFIRC; IGFR; Igfr1; insulin like growth factor 1 receptor; Insulin like growth factor 1 receptor precursor; insulin-like growth factor 1 receptor; Insulin-like growth factor 1 receptor alpha chain; Insulin-like growth factor 1 receptor beta chain; Insulin-like growth factor I receptor; JTK13; line 186; soluble IGF1R variant 1; soluble IGF1R variant 2