2ST1:
reference: The three-dimensional structure of Bacillus amyloliquefaciens subtilisin at 1.8 A and an analysis of the structural consequences of peroxide inactivation., Bott R, Ultsch M, Kossiakoff A, Graycar T, Katz B, Power S, J Biol Chem 1988 Jun 5;263(16):7895-906. PMID: 3286644

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