Biology:2-Hydroxymuconate-6-semialdehyde dehydrogenase

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Short description: Class of enzymes
2-Hydroxymuconate-6-semialdehyde dehydrogenase
Identifiers
EC number1.2.1.85
Databases
IntEnzIntEnz view
BRENDABRENDA entry
ExPASyNiceZyme view
KEGGKEGG entry
MetaCycmetabolic pathway
PRIAMprofile
PDB structuresRCSB PDB PDBe PDBsum

2-Hydroxymuconate-6-semialdehyde dehydrogenase (EC 1.2.1.85, xylG [gene], praB [gene] ) is an enzyme with systematic name (2E,4Z)-2-hydroxy-6-oxohexa-2,4-dienoate:NAD+ oxidoreductase.[1][2][3] This enzyme catalyses the following chemical reaction

2-hydroxymuconate-6-semialdehyde + NAD+ + H2O [math]\displaystyle{ \rightleftharpoons }[/math] (2Z,4E)-2-hydroxyhexa-2,4-dienedioate + NADH + 2 H+

This substrate for this enzyme is formed by meta ring cleavage of catechol (EC 1.13.11.2, catechol 2,3-dioxygenase), and is an intermediate in the bacterial degradation of several aromatic compounds.

References

  1. "Overlapping substrate specificities of benzaldehyde dehydrogenase (the xylC gene product) and 2-hydroxymuconic semialdehyde dehydrogenase (the xylG gene product) encoded by TOL plasmid pWW0 of Pseudomonas putida". Journal of Bacteriology 177 (5): 1196–201. March 1995. PMID 7868591. 
  2. "Metabolism of 4-amino-3-hydroxybenzoic acid by Bordetella sp. strain 10d: A different modified meta-cleavage pathway for 2-aminophenols". Bioscience, Biotechnology, and Biochemistry 70 (11): 2653–61. November 2006. doi:10.1271/bbb.60264. PMID 17090920. 
  3. "Uncovering the protocatechuate 2,3-cleavage pathway genes". Journal of Bacteriology 191 (21): 6758–68. November 2009. doi:10.1128/JB.00840-09. PMID 19717587. 

External links