1SVN:
reference: Crystal structure of the alkaline proteinase Savinase from Bacillus lentus at 1.4 A resolution., Betzel C, Klupsch S, Papendorf G, Hastrup S, Branner S, Wilson KS, J Mol Biol 1992 Jan 20;223(2):427-45. PMID: 1738156

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