Applied and Environmental Microbiology, July 2000, p. 2882-2887, Vol. 66, No. 7
0099-2240/00/$04.00+0
Copyright © 2000, American Society for Microbiology. All rights reserved.

Cardiff School of Biosciences, Cardiff University, Cardiff CF10 3TL, Wales, United Kingdom
Received 16 November 1999/Accepted 10 April 2000
2,3-Dichloro-1-propanol is more chemically stable than its isomer,
1,3-dichloro-2-propanol, and is therefore more difficult to degrade.
The isolation of bacteria capable of complete mineralization of
2,3-dichloro-1-propanol was successful only from enrichments at high
pH. The bacteria thus isolated were found to be members of the
division of the Proteobacteria in the Rhizobium
subdivision, most likely Agrobacterium sp. They could
utilize both dihaloalcohol substrates and 2-chloropropionic acid. The
growth of these strains in the presence of 2,3-dichloro-1-propanol was
strongly affected by the pH and buffer strength of the medium. Under
certain conditions, a ladder of four active dehalogenase bands could be
visualized from this strain in activity gels. The enzyme involved in
the complete mineralization of 2,3-dichloro-1-propanol was shown to have a native molecular weight of 114,000 and consisted of four subunits of similar molecular weights.
Present address: Inter University Center in Biotechnology,
Institute Technology Bandung, Bandung 40132, Indonesia.
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