3WY8:
reference: Structural characterization reveals the keratinolytic activity of an arthrobacter nicotinovorans protease., Sone T, Haraguchi Y, Kuwahara A, Ose T, Takano M, Abe A, Tanaka M, Tanaka I, Asano K, Protein Pept Lett. 2015;22(1):63-72. PMID: 25256266

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