Linked Life Data

6319231

Source:http://linkedlifedata.com/resource/pubmed/id/6319231

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1984-2-28
pubmed:abstractText
The structural gene (pyrF) for orotidine-5'-phosphate decarboxylase (OMPase, EC 4.1.1.23) of Escherichia coli K-12 has been cloned as part of two PvuII fragments (1.2 and 0.9 kb) to form the recombinant plasmid pDK26. Extracts of E. coli [pDK26] had 80-fold higher levels of OMPase activity than wild-type strains without the plasmid. Maxicell analysis showed that pDK26 encoded two proteins of Mr 27 000 [pyrF(OMPase)] and 15 000 (Z) in addition to the ampicillin-resistance determinant. The approximate initiation site and direction of transcription of the pyrF gene have been determined. Extracts of strains that were deficient in polynucleotide phosphorylase (PNPase) had higher levels of OMPase activity than isogenic PNPase+ strains when one or two copies of the pyrF gene were present per cell either in the chromosome or on a low copy number plasmid. However, no significant difference in OMPase activity was seen in PNPase- strains that contained the pyrF gene cloned in a multicopy plasmid. Southern hybridization experiments showed that the yeast gene for OMPase (URA3) and the E. coli pyrF gene had less than 70% DNA sequence homology.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Nov
pubmed:issn
0378-1119
pubmed:author
pubmed:issnType
Print
pubmed:volume
25
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
39-48
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
1983
pubmed:articleTitle
Cloning and physical analysis of the pyrF gene (coding for orotidine-5'-phosphate decarboxylase) from Escherichia coli K-12.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S.