4GCR:
reference: Structure of the bovine eye lens protein gammaB(gammaII)-crystallin at 1.47 A., Najmudin S, Nalini V, Driessen HP, Slingsby C, Blundell TL, Moss DS, Lindley PF, Acta Crystallogr D Biol Crystallogr. 1993 Mar 1;49(Pt 2):223-33. PMID: 15299528

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