Linked Life Data

1587483

Source:http://linkedlifedata.com/resource/pubmed/id/1587483

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1992-6-23
pubmed:abstractText
In Saccharomyces cerevisiae, the HIS3 (encoding imidazoleglycerolphosphate dehydratase) mRNA is unstable (t1/2 = 7 min), whereas the ACT1 (encoding actin) mRNA is more stable (t1/2 = 30 min). To define determinants responsible for rapid mRNA decay, hybrid genes comprised of various regions of these two mRNAs were constructed, transformed into yeast on centromere-containing vectors, and the half-lives of the resultant chimeric mRNAs were measured. To examine whether the 3'-untranslated region (3'-UTR) of HIS3 can confer instability to the ACT1 mRNA, DNA encoding the 3'-UTR of ACT1 was replaced with the corresponding region of HIS3. The hybrid mRNA containing the HIS3 3'-UTR decayed at a rate similar to the endogenous ACT1 mRNA. The mRNA containing the HIS3 5'-UTR and most of the HIS3 coding region fused to an ACT1 3'-fragment was unstable, indicating that HIS3 instability determinants are located within the HIS3 5'-UTR or coding sequence. Deleting 411 nucleotides (nt) from the coding region of either HIS3 or the 5'-HIS3-ACT1-3' chimeric gene resulted in a three- to fourfold stabilization of the respective mRNAs. However, insertion of this 411-nt fragment in-frame into the entire ACT1 gene had no destabilizing effect on the resultant hybrid mRNA. We conclude that the instability determinants of HIS3 mRNA are complex, involving a coding region segment and, possibly, the 5'-UTR.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
May
pubmed:issn
0378-1119
pubmed:author
pubmed:issnType
Print
pubmed:day
1
pubmed:volume
114
pubmed:geneSymbol
HIS3
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
35-41
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
1992
pubmed:articleTitle
A coding region segment is necessary, but not sufficient for rapid decay of the HIS3 mRNA in yeast.
pubmed:affiliation
Department of Molecular Genetics and Microbiology, University of Massachusetts Medical School, Worcester 01655.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S.