1G3D:
reference: X-ray crystallographic analyses of complexes between bovine beta-trypsin and Schiff base copper(II) or iron(III) chelates., Toyota E, Ng KK, Sekizaki H, Itoh K, Tanizawa K, James MN, J Mol Biol 2001 Jan 19;305(3):471-9. PMID: 11152605

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