Bacterial 2-haloacid dehalogenases: structures and catalytic properties
نویسندگان
چکیده
منابع مشابه
Bacterial DL-2-haloacid dehalogenase from Pseudomonas sp. strain 113: gene cloning and structural comparison with D- and L-2-haloacid dehalogenases.
DL-2-Haloacid dehalogenase from Pseudomonas sp. strain 113 (DL-DEX) catalyzes the hydrolytic dehalogenation of both D- and L-2-haloalkanoic acids to produce the corresponding L- and D-2-hydroxyalkanoic acids, respectively, with inversion of the C2 configuration. DL-DEX is a unique enzyme: it acts on the chiral carbon of the substrate and uses both enantiomers as equivalent substrates. We have i...
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A novel activity of halohydrin dehalogenases towards spiroepoxides has been found. The enzyme from Arthrobacter sp. (HheA) catalysed highly regioselective azidolysis of spiroepoxides containing 5, 6 and 7-membered cycloalkane rings, while the enzyme from Agrobacterium radiobacter (HheC), besides high regioselectivity, also displayed moderate to high enantioselectivity (E up to >200) that can be...
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Inosine-5'-monophosphate dehydrogenase (IMPDH) occupies a key position in purine nucleotide metabolism. In this study, we have performed the biochemical and physico-chemical characterization of eight bacterial IMPDHs, among which six were totally unexplored. This study led to a classification of bacterial IMPDHs according to the regulation of their catalytic properties and their quaternary stru...
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From the beginning of the past century, halogenated hydrocarbons have been extensively applied in industry and agriculture. Decades after the start of their widespread use, evidence started to accumulate that some of these xenobiotic halogenated compounds are persistent and highly toxic, stimulating investigations how they could be degraded. It appeared that specific bacterial enzymes exist, de...
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Haloalkane dehalogenases are enzymes that catalyze the cleavage of the carbon-halogen bond by a hydrolytic mechanism. Genomes of Mycobacterium tuberculosis and M. bovis contain at least two open reading frames coding for the polypeptides showing a high sequence similarity with biochemically characterized haloalkane dehalogenases. We describe here the cloning of the haloalkane dehalogenase genes...
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ژورنال
عنوان ژورنال: Pure and Applied Chemistry
سال: 1996
ISSN: 1365-3075,0033-4545
DOI: 10.1351/pac199668112097