1S9A:
reference: Crystal structure of 4-chlorocatechol 1,2-dioxygenase from the chlorophenol-utilizing gram-positive Rhodococcus opacus 1CP., Ferraroni M, Solyanikova IP, Kolomytseva MP, Scozzafava A, Golovleva L, Briganti F, J Biol Chem 2004 Jun 25;279(26):27646-55. Epub 2004 Apr 1. PMID: 15060064

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