3MRU:
reference: Crystal structure and mutational analysis of aminoacylhistidine dipeptidase from vibrio alginolyticus reveal a new architecture of M20 metallopeptidases., Chang CY, Hsieh YC, Wang TY, Chen YC, Wang YK, Chiang TW, Chen YJ, Chang CH, Chen CJ, Wu TK, J Biol Chem. 2010 Sep 6. PMID: 20819954

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