Accéder au contenu
Merck

Specific deuteration of dichlorobenzoate during reductive dehalogenation by Desulfomonile tiedjei in D2O.

Applied and environmental microbiology (1992-01-01)
G D Griffith, J R Cole, J F Quensen, J M Tiedje
RÉSUMÉ

Desulfomonile tiedjei DCB-1 is a strict anaerobe capable of reductively dechlorinating meta-chlorobenzoates. To probe the mechanism of this aryl dechlorination, we incubated cell suspensions of D. tiedjei in D2O and with 2,5-dichlorobenzoate. The deuterium was incorporated into the dechlorination product exclusively at the position of dehalogenation, as shown by gas chromatography-mass spectrometry and proton magnetic resonance analyses. These results favor a model for dechlorination that should not allow proton exchange at other positions, as would be the case if partial ring reduction occurred.

MATÉRIAUX
Référence du produit
Marque
Description du produit

Sigma-Aldrich
Acide 2,5-dichlorobenzoique, 97%