Linked Life Data

8920179

Source:http://linkedlifedata.com/resource/pubmed/id/8920179

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1-2
pubmed:dateCreated
1997-1-2
pubmed:abstractText
Pseudomonas putida NCIMB 11767 oxidized phenol, monochlorophenols, several dichlorophenols and a range of alkylbenzenes (C1-C6) via an inducible toluene dioxygenase enzyme system. Biphenyl and naphthalene were also oxidized by this enzyme. Growth on toluene and phenol induced the meta-ring-fission enzyme, catechol 2,3-oxygenase, whereas growth on benzoate, which did not require expression of toluene dioxygenase, induced the ortho-ring-cleavage enzyme, catechol 1,2-oxygenase. Monochlorobenzoate isomers and 2,3,5-trichlorophenol were gratuitous inducers of toluene dioxygenase, whereas 3,4-dichlorophenol was a fortuitous oxidation substrate of the enzyme. The organism also grew on 2,4- and 2,5-dichloro isomers of both phenol and benzoate, on 2,3,4-trichlorophenol and on 1-phenylheptane. During growth on toluene in nitrogen-limited chemostat culture, expression of both toluene dioxygenase and catechol 2,3-oxygenase was positively correlated with increase in specific growth rate (0.11-0.74 h-1), whereas the biomass yield coefficient decreased. At optimal dilution rates, the predicted performance of a 1-m3 bioreactor supplied with 1 g nitrogen l-1 for removal of toluene was 57 g day-1 and for removal of trichloroethylene was 3.4 g day-1. The work highlights the oxidative versatility of this bacterium with respect to substituted hydrocarbons and shows how growth rate influences the production of competent cells for potential use as bioremediation catalysts.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
B
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Mar
pubmed:issn
0175-7598
pubmed:author
pubmed:issnType
Print
pubmed:volume
45
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
56-62
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1996
pubmed:articleTitle
Expression and substrate specificity of the toluene dioxygenase of Pseudomonas putida NCIMB 11767.
pubmed:affiliation
Department of Biological Sciences, De Montfort University, Scraptoft, Leicester, UK.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't