Identification of a new class of negative regulators affecting sporulation-specific gene expression in yeast.
Identification of a new class of negative regulators affecting sporulation-specific gene expression in yeast.
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鉴定一类影响酵母中孢子形成特异性基因表达的新型负调节因子。
DOI:
10.1093/genetics/147.3.1351
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发表时间:
1997
期刊:
影响因子:
3.3
通讯作者:
Neigeborn,L
中科院分区:
文献类型:
--
作者:
Benni,ML;Neigeborn,L
We characterized two yeast loci,MDS3andPMD1,that negatively regulate sporulation. Initiation of sporulation is mediated by the meiotic activatorIME1,which relies onMCK1for maximal expression. We isolated theMDS3-1allele (encoding a truncated form of Mds3p) as a suppressor that restoresIME1expression inmck1mutants.mds3null mutations confer similar suppression phenotypes asMDS3-1,indicating that Mds3p is a negative regulator of sporulation and theMDS3-1allele confers a dominant-negative phenotype.PMD1is predicted to encode a protein sharing significant similarity with Mds3p.mds3 pmd1double mutants are better suppressors ofmck1than is either single mutant, indicating that Mds3p and Pmd1p function synergistically. Northern blot analysis revealed that suppression is due to increasedIME1transcript accumulation. The roles of Mds3p and Pmd1p are not restricted to theMCK1pathway becausemds3 pmd1mutations also suppressIME1expression defects associated withMCK1-independent sporulation mutants. Furthermore,mds3 pmdlmutants express significant levels ofIME1even in vegetative cells and this unscheduled expression results in premature sporulation. These phenotypes, and interactions withRAS2-Val19suggest that unscheduled derepression ofIME1is probably due to a defect in recognition of nutritional status.
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影响因子:
64.8
作者:
E. Gross;D. Goldberg;A. Levitzki
通讯作者:
A. Levitzki
影响因子:
5.3
作者:
S. Hepworth;L. K. Ebisuzaki;J. Segall
通讯作者:
J. Segall
DOI:
10.1073/pnas.86.24.10018
发表时间:
1989
影响因子:
11.1
作者:
Strich,R;Slater,MR;Esposito,RE
通讯作者:
Esposito,RE
影响因子:
5.3
作者:
Thew J. Marton;Deborah Crouch;A. Hinnebusch
通讯作者:
A. Hinnebusch
影响因子:
5.3
作者:
Z. Olempska;E. Freese
通讯作者:
E. Freese