This IGF-I peptide analog was able to inhibit the autophosphorylation of the IGF-I receptor by IGF-I as well as the growth of several different cell types, including prostate carcinoma cells and SV40-transformed cells. Such analogs might be useful in treating abnormal cell growth.ONE-LETTER SEQUENCE: CYAAPLKPAKSCMOLECULAR FORMULA: C55H88N14O15S2MOLECULAR WEIGHT:1249.52STORAGE CONDITIONS: -20 5C, CAS REGISTRY NUMBER: [147819-32-7], RESEARCH AREA: DiabetesREFERENCES: Z.Pietrzkowski et al., Cancer Res., 52, 6447 (1992); Z.Pietrzkowski et al., Cancer Res., 53, 1102 (1993); G.Camarero et al., Dev. Biol., 262, 242 (2003); L.Croci et al., Cell Death Differ., 18, 48 (2011)