5.99.1.4: 2-hydroxychromene-2-carboxylate isomerase
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Synonyms
2-hydroxychromene-2-carboxylate isomerase, 2-hydroxychromene-2-carboxylic acid isomerase, 2HC2CA isomerase, 2HCCAI, HCCA isomerase, nsaD
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Cloned
Cloned on EC 5.99.1.4 - 2-hydroxychromene-2-carboxylate isomerase
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a gene cluster is identified on the plasmid pBN6 which codes for several enzymes participating in the degradative pathway for naphthalenesulfonates. A DNA fragment of 16915 bp is sequenced which contains 17 ORFs. The genes encoding the 1,2-dihydroxynaphthalene dioxygenase, 2-hydroxychromene-2-carboxylate isomerase, and 29-hydroxybenzalpyruvate aldolase of the naphthalenesulfonate pathway are identified on the DNA fragment and the encoded proteins are heterologously expressed in Escherichia coli