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[[Category:EC 3.8.1]]
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Latest revision as of 02:25, 4 January 2008

In enzymology, a (S)-2-haloacid dehalogenase (EC is an enzyme that catalyzes the chemical reaction

(S)-2-haloacid + H2O (R)-2-hydroxyacid + halide

Thus, the two substrates of this enzyme are (S)-2-haloacid and H2O, whereas its two products are (R)-2-hydroxyacid and halide.

This enzyme belongs to the family of hydrolases, specifically those acting on halide bonds in carbon-halide compounds. The systematic name of this enzyme class is (S)-2-haloacid halidohydrolase. Other names in common use include 2-haloacid dehalogenase[ambiguous], 2-haloacid halidohydrolase [ambiguous][ambiguous], 2-haloalkanoic acid dehalogenase, 2-haloalkanoid acid halidohydrolase, 2-halocarboxylic acid dehalogenase II, DL-2-haloacid dehalogenase[ambiguous], L-2-haloacid dehalogenase, and L-DEX. This enzyme participates in gamma-hexachlorocyclohexane degradation and 1,2-dichloroethane degradation.

Structural studies

As of late 2007, 10 structures have been solved for this class of enzymes, with PDB accession codes 1AQ6, 1JUD, 1QH9, 1QQ5, 1QQ6, 1QQ7, 1ZRM, 1ZRN, 2NO4, and 2NO5.


  • IUBMB entry for
  • BRENDA references for (Recommended.)
  • PubMed references for
  • PubMed Central references for
  • Google Scholar references for
  • Goldman P, Milne GW, Keister DB (1968). "Carbon-halogen bond cleavage. 3. Studies on bacterial halidohrolases". J. Biol. Chem. 243: 428&ndash, 34. PMID 5635785.
  • Motosugi M, Esaki N and Soda K (1982). "Preparation and properties of 2-halo acid dehalogenase from Pseudomonas putida". Agric. Biol. Chem. 46: 837&ndash, 838.
  • Klages U, Krauss S, Lingens F (1983). "2-Haloacid dehalogenase from a 4-chlorobenzoate-degrading Pseudomonas spec. CBS 3". Hoppe. Seylers. Z. Physiol. Chem. 364: 529&ndash, 35. PMID 6873881.
  • Diez A, Prieto MI, Alvarez MJ, Bautista JM, Garrido J, Puyet A (1996). "Improved catalytic performance of a 2-haloacid dehalogenase from Azotobacter sp. by ion-exchange immobilisation". Biochem. Biophys. Res. Commun. 220: 828&ndash, 33. PMID 8607850.
  • Morsberger FM, Muller R, Otto MK, Lingens F, Kulbe KD (1991). "Purification and characterization of 2-halocarboxylic acid dehalogenase II from Pseudomonas spec. CBS 3". Biol. Chem. Hoppe. Seyler. 372: 915&ndash, 22. PMID 1772590.
  • Kohler R, Brokamp A, Schwarze R, Reiting RH, Schmidt FR (1998). "Characteristics and DNA-sequence of a cryptic haloalkanoic acid dehalogenase from Agrobacterium tumefaciens RS5". Curr. Microbiol. 36: 96&ndash, 101. PMID 9425247.
  • Motosugi K, Esaki N, Soda K (1982). "Bacterial assimilation of D- and L-2-chloropropionates and occurrence of a new dehalogenase". Arch. Microbiol. 131: 179&ndash, 83. PMID 7103659.
  • Kurihara T, Esaki N and Soda K (2000). "Bacterial 2-haloacid dehalogenases: structures and reaction mechanisms". J. Mol. Catal., B Enzym. 10: 57&ndash, 65.
  • M, Tsunasawa S and Esaki N (1996). "Bacterial 2-haloacid dehalogenases: Structures and catalytic properties". Pure Appl. Chem. 68: 2097&ndash, 2103.

External links

The CAS registry number for this enzyme class is 37289-39-7.

Gene Ontology (GO) codes