SCH9, a putative protein kinase from Saccharomyces cerevisiae, affects HOT1-stimulated recombination.
SCH9, a putative protein kinase from Saccharomyces cerevisiae, affects HOT1-stimulated recombination.
复制标题
SCH9 是一种来自酿酒酵母的推定蛋白激酶,影响 HOT1 刺激的重组。
DOI:
10.1007/s00438-004-1049-x
复制
发表时间:
2004
期刊:
影响因子:
--
通讯作者:
Keil,RL
中科院分区:
文献类型:
--
作者:
Prusty,R;Keil,RL
HOT1is a mitotic recombination hotspot derived from yeast rDNA. To further studyHOT1function,trans-actingHOT1recombinationmutants (hrm) that alter hotspot activity were isolated.hrm2-1mutants have decreasedHOT1activity and grow slowly. TheHRM2gene was cloned and found to be identical toSCH9, a gene that affects a growth-control mechanism that is partially redundant with the cAMP-dependentproteinkinaseA(PKA) pathway. Deletion ofSCH9decreasesHOT1and rDNA recombination but not other mitotic exchange. Although high levels of RNA polymerase I transcription initiated atHOT1are required for its recombination-stimulating activity,sch9mutations do not affect transcription initiated withinHOT1. Thus, transcription is necessary but not sufficient forHOT1activity.TPK1, which encodes a catalytic subunit of PKA, is a multicopy suppressor of the recombination and growth defects ofsch9mutants, suggesting that increased PKA activity compensates forSCH9loss.RAS2val19, which codes for a hyperactiveRASprotein and increases PKA activity, suppresses both phenotypic defects ofsch9mutants. In contrast toTPK1andRAS2val19, the gene forsplit zincfingerprotein1(SFP1) on a multicopy vector suppresses only the growth defects ofsch9mutants, indicating that growth andHOT1functions of Sch9p are separable. Sch9p may affect signal transduction pathways which regulate proteins that are specifically required forHOT1-stimulated exchange.
登录
查看更多内容
DOI:
10.1073/pnas.100113397
发表时间:
2000-05-23
影响因子:
11.1
作者:
Robertson, LS;Causton, HC;Fink, GR
通讯作者:
Fink, GR
影响因子:
3.3
作者:
D. Scholes;M. Banerjee;B. Bowen;M. Curcio
通讯作者:
D. Scholes;M. Banerjee;B. Bowen;M. Curcio
影响因子:
3.3
作者:
Yuan,LW;Keil,RL
通讯作者:
Keil,RL
DOI:
10.1073/pnas.88.21.9755
发表时间:
1991-11
影响因子:
11.1
作者:
M. White;M. Wierdl;P. Detloff;T. D. Petes
通讯作者:
M. White;M. Wierdl;P. Detloff;T. D. Petes
影响因子:
3.3
作者:
Hartley,AD;Ward,MP;Garrett,S
通讯作者:
Garrett,S