3HKP:
reference: Catechol 1,2-dioxygenase from the Gram-positive Rhodococcus opacus 1CP: Quantitative structure/activity relationship and the crystal structures of native enzyme and catechols adducts., Matera I, Ferraroni M, Kolomytseva M, Golovleva L, Scozzafava A, Briganti F, J Struct Biol. 2009 Dec 28. PMID: 20040374

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