1CHM:
reference: Enzymatic mechanism of creatine amidinohydrolase as deduced from crystal structures., Coll M, Knof SH, Ohga Y, Messerschmidt A, Huber R, Moellering H, Russmann L, Schumacher G, J Mol Biol 1990 Jul 20;214(2):597-610. PMID: 1696320

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