1IGR:
reference: Crystal structure of the first three domains of the type-1 insulin-like growth factor receptor., Garrett TP, McKern NM, Lou M, Frenkel MJ, Bentley JD, Lovrecz GO, Elleman TC, Cosgrove LJ, Ward CW, Nature 1998 Jul 23;394(6691):395-9. PMID: 9690478

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