Phospholipase C interacts with Sgd1p and is required for expression of GPD1 and osmoresistance in Saccharomyces cerevisiae.
Phospholipase C interacts with Sgd1p and is required for expression of GPD1 and osmoresistance in Saccharomyces cerevisiae.
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磷脂酶 C 与 Sgd1p 相互作用,是酿酒酵母中 GPD1 表达和渗透阻力所必需的。
DOI:
10.1007/s00438-002-0647-8
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发表时间:
2002
期刊:
影响因子:
--
通讯作者:
Vancura,A
中科院分区:
文献类型:
--
作者:
Lin,H;Nguyen,P;Vancura,A
TheSaccharomyces cerevisiae PLC1gene encodes a homolog of the δ isoform of mammalian phosphoinositide-specific phospholipase C. Cells deleted forPLC1(plc1Δ) are viable, but display several phenotypes, including osmotic, temperature, and nocodazole sensitivity. We have used a two-hybrid screen to identify Plc1p-interacting proteins. One of the interacting proteins found was Sgd1p, a recently identified, essential, nuclear protein. TheSGD1gene was originally cloned by complementation of an osmostress-sensitive mutant. The Plc1p-Sgd1p interaction was confirmed biochemically by affinity chromatography.SGD1interacts genetically with bothPLC1andHOG1(which encodes an osmosensing mitogen-activated protein kinase). Overexpression of Sgd1p suppresses the temperature sensitivity of cells bearing theplc1-4allele, and the double mutant strainplc1Δsgd1-1displays enhanced temperature and nocodazole sensitivity. Theplc1Δhog1Δ strain displays increased osmosensitivity, and has a synthetic defect in glycerol synthesis and the expression ofGPD1(which encodes the enzyme glycerol 3-phosphate dehydrogenase that is involved in glycerol biosynthesis), suggesting that Plc1p and Hog1p function in independent pathways. Thehog1Δsgd1-1double mutant displays enhanced osmosensitivity relative to that of either single mutant. The triple mutantplc1Δhog1Δsgd1-1is inviable, while theplc1Δhog1Δsgd1-2strain grows extremely slowly and is more osmosensitive than theplc1Δhog1Δ orhog1Δsgd1-2strain. These results are consistent with a model in which Plc1p and Hog1p function in parallel pathways affecting osmoregulation, and signals from both these pathways converge, at least partly, on Sgd1p.
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DOI:
--
发表时间:
1975
期刊:
影响因子:
--
作者:
J. Cadet;J. Ulrich;R. Teoule
通讯作者:
R. Teoule
影响因子:
4.8
作者:
L. Breimer;T. Lindahl
通讯作者:
T. Lindahl
影响因子:
64.8
作者:
N. Duker;G. Teebor
通讯作者:
G. Teebor
DOI:
10.1016/0006-291x(68)90409-9
发表时间:
1968-12
影响因子:
3.1
作者:
L. Grossman;E. Rodgers
通讯作者:
L. Grossman;E. Rodgers
影响因子:
14.9
作者:
Weiss,RB;Duker,NJ
通讯作者:
Duker,NJ