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Reference: Oshiro J, et al. (2003) Diacylglycerol pyrophosphate phosphatase in Saccharomyces cerevisiae. Biochim Biophys Acta 1635(1):1-9

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Abstract

Diacylglycerol pyrophosphate (DGPP) phosphatase in the yeast Saccharomyces cerevisiae is a Mg(2+)-independent and N-ethylmaleimide-insensitive 34-kDa vacuolar membrane-associated enzyme. It catalyzes the dephosphorylation of DGPP to form phosphatidate (PA) and then removes the phosphate from PA to form diacylglycerol (DAG). The enzyme is a member of the lipid phosphate phosphatase superfamily that contains a three-domain lipid phosphatase motif required for catalytic activity. Expression of the DPP1 gene, which encodes DGPP phosphatase, is induced by zinc depletion, by inositol supplementation, and when cells enter the stationary phase. Induction by zinc depletion is mediated by the transcription factor Zap1p, which binds to a zinc-responsive element in the DPP1 promoter. Repression of DPP1 expression is mediated by the transcription factor Gis1p, which binds to three post-diauxic shift elements in the promoter. Regulation of DPP1 correlates with the expression of DGPP phosphatase activity and the cellular levels of DGPP and PA.

Reference Type
Journal Article | Review | Research Support, U.S. Gov't, P.H.S.
Authors
Oshiro J, Han GS, Carman GM
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