The Enzyme Database

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Accepted name: trans-o-hydroxybenzylidenepyruvate hydratase-aldolase
Reaction: (3E)-4-(2-hydroxyphenyl)-2-oxobut-3-enoate + H2O = salicylaldehyde + pyruvate
For diagram of naphthalene metabolism, click here
Glossary: (3E)-4-(2-hydroxyphenyl)-2-oxobut-3-enoate = (E)-2′-hydroxybenzylidenepyruvate
salicylaldehyde = 2-hydroxybenzaldehyde
Other name(s): 2′-hydroxybenzalpyruvate aldolase; NsaE; tHBPA hydratase-aldolase
Systematic name: (3E)-4-(2-hydroxyphenyl)-2-oxobut-3-enoate hydro-lyase
Comments: This enzyme is involved in naphthalene degradation. The enzyme catalyses a retro-aldol reaction in vitro, and it accepts a broad range of aldehydes and 4-substituted 2-oxobut-3-enoates as substrates [4].
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc, PDB
1.  Kuhm, A.E., Knackmuss, H.J. and Stolz, A. Purification and properties of 2′-hydroxybenzalpyruvate aldolase from a bacterium that degrades naphthalenesulfonates. J. Biol. Chem. 268 (1993) 9484–9489. [PMID: 8486638]
2.  Keck, A., Conradt, D., Mahler, A., Stolz, A., Mattes, R. and Klein, J. Identification and functional analysis of the genes for naphthalenesulfonate catabolism by Sphingomonas xenophaga BN6. Microbiology 152 (2006) 1929–1940. [DOI] [PMID: 16804169]
3.  Eaton, R.W. Organization and evolution of naphthalene catabolic pathways: sequence of the DNA encoding 2-hydroxychromene-2-carboxylate isomerase and trans-o-hydroxybenzylidenepyruvate hydratase-aldolase from the NAH7 plasmid. J. Bacteriol. 176 (1994) 7757–7762. [DOI] [PMID: 8002605]
4.  Eaton, R.W. trans-o-Hydroxybenzylidenepyruvate hydratase-aldolase as a biocatalyst. Appl. Environ. Microbiol. 66 (2000) 2668–2672. [DOI] [PMID: 10831455]
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