Linked Life Data

192455

Source:http://linkedlifedata.com/resource/pubmed/id/192455

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
6
pubmed:dateCreated
1977-6-30
pubmed:abstractText
It was found that there are two kinds of pyrimidine nucleoside, monophosphokinase deoxythymidine 5'-monophosphate-deoxyuridine 5'-monophosphate (dTMP-dUMP) kinase and cytidine 5'-monophosphate-deoxycytidine 5'-monophosphate-uridine 5'-monophosphate-doexyuridine 5'-monophosphate (CMP-dCMP-UMP-dUMP) kinase, and their molecular weights were calculated to be 46,000 and 26,000, respectively, by gel filtration. dTMP-dUMP kinase phosphorylated dTMP with a Km of 3.1 X 10(-5)M and dUMP with a Km of 7.7 X 10(-4) M. dTMP phosphorylation catalyzed by dTMP-dUMP kinase was inhibited competively by dUMP with a Ki of 2.0 X 10(-3) M. Similarly, phosphorylation of dUMP by this enzyme was inhibited competively by dTMP with a Ki of 2.5 X 10 (-5) M. CMP-dCMP-UMP-dUMP kinase of Yoshida sarcoma phosphorylated dUMP with a Km of 3.1 X 10(-3) M and dCMP with a Km of 7.1 X 10 (-4) M, but it did not phosphorylate dTMP. Phosphorylation of dUMP BY CMP-dCMP-UMP-dUMP kinase was inhibited competitively by DCMP and dTMP with Ki's of 6.9 X 10(-4) and 3.0 X 10(-3) M, respectively, and phosphorylation of dCMP was inhibited completely by dUMP a Ki of 2.2 X 10(-3) M. Relative Vmax activity of this enzyme was 345 nmoles/mg protein with dCMP and 127 nmoles/mg protein with dUMP.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jun
pubmed:issn
0008-5472
pubmed:author
pubmed:issnType
Print
pubmed:volume
37
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1593-7
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1977
pubmed:articleTitle
Characterization of pyrimidine nucleoside monophosphokinase in normal and malignant tissues.
pubmed:publicationType
Journal Article, In Vitro