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Dehalogenase from Methylobacterium sp. HJ1 induced by the herbicide 2, 2-dichloropropionate (Dalapon)

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Date
2008
Author
Jing, Ng Hong
Taha, Aishah Mohd
Pakingking , Rolando, Jr. ORCID
Wahab, Roswanira A. B.
Huyop, Fahrul
Page views
2,365
Subject
degradation ASFA
Dehalogenase
2,2-dichloropropionic acid
Taxonomic term
Methylobacterium GBIF
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Abstract
Heavy industrial activities and agricultural processes require consumption of many halogenated compounds, and release them continuously as pollutants into the environment. These xenobiotics show high toxicity and persistence and cause many problems to the society, soils and ground water. Microbial dehalogenases are involved in the biodegradation of many important chlorinated compounds. A bacterial strain identified as Methylobacterium sp. HJ1 is able to degrade the herbicide 2,2-dichloropropionic acid by removal of the halogen and subsequent metabolism of the product for energy. D,L-2-chloropropionate also supported good growth of the organism but 3-chloropropionate, monochloroacetate and dichloroacetate were not utilized. Cell-free extracts of the 2,2-dichloropropionate-grown bacteria converted 2,2-dichloropropionate into pyruvate with the release of two chloride ions for each molecule of pyruvate formed. This indicates the presence of dehalogenase activity in the cell-free extracts. Only 2,2-dichloropropionate and D,L-2-chloropropionate were inducers and substrates for the dehalogenase. Monochloroacetate and dichloroacetate did not serve as an inducer, whereas 3-chloropropionate was a non-substrate inducer.
URI
http://hdl.handle.net/10862/91
Suggested Citation
Jing, N. H., Taha, A. M., Pakingking , Jr., Wahab, R. A. B., & Huyop, F. (2008). Dehalogenase from Methylobacterium sp. HJ1 induced by the herbicide 2, 2-dichloropropionate (Dalapon). African Journal of Microbiology Research, 2(2), 32-36. http://hdl.handle.net/10862/91
Type
Article
ISSN
1996-0808
Collections
  • Journal Articles [1155]


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