3AXG:
reference: Three-dimensional structure of nylon hydrolase and mechanism of nylon-6 hydrolysis., Negoro S, Shibata N, Tanaka Y, Yasuhira K, Shibata H, Hashimoto H, Lee YH, Oshima S, Santa R, Oshima S, Mochiji K, Goto Y, Ikegami T, Nagai K, Kato D, Takeo M, Higuchi Y, J Biol Chem. 2012 Feb 10;287(7):5079-90. doi: 10.1074/jbc.M111.321992. Epub 2011 , Dec 19. PMID: 22187439

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