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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1990-5-23
pubmed:abstractText
The meta-cleavage operon of TOL plasmid pWW0 of Pseudomonas putida encodes a set of enzymes which transform benzoate/toluates to Krebs cycle intermediates via extradiol (meta-) cleavage of (methyl)catechol. The genetic organization of the operon was characterized by cloning of the meta-cleavage genes into an expression vector and identification of their products in Escherichia coli maxicells. This analysis showed that the meta-cleavage operon contains 13 genes whose order and products (in kilodaltons) are xylX(57)-xylY(20)-xylZ(39)-xylL(28)-xylT(1 2)-xylE(36)-xylG(60)-xylF(34)- xylJ(28)-xylQ(42)-xylK(39)-xylI(29)-xylH(4 ). The xylXYZ genes encode three subunits of toluate 1,2-dioxygenase. The xylL, xylE, xylG, xylF, xylJ, xylK, xylI, and xylH genes encode 1,2-dihydroxy-3,5-cyclohexadiene-1-carboxylate dehydrogenase, catechol 2,3-dioxygenase, 2-hydroxymuconic semialdehyde dehydrogenase, 2-hydroxymuconic semialdehyde hydrolase, 2-oxopent-4-enoate hydratase, 4-hydroxy-2-oxovalerate aldolase, 4-oxalocrotonate decarboxylase and 4-oxaloccotonate tautomerase, respectively. The functions of xylT and xylQ are not known at present. The comparison of the coding capacity and the sizes of the products of the meta-cleavage operon genes indicated that most of the DNA between xylX and xylH consists of coding sequences.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Mar
pubmed:issn
0026-8925
pubmed:author
pubmed:issnType
Print
pubmed:volume
221
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
113-20
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1990
pubmed:articleTitle
The meta cleavage operon of TOL degradative plasmid pWW0 comprises 13 genes.
pubmed:affiliation
Department of Medical Biochemistry, University of Geneva, Switzerland.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't