Isolation and characterization of the Saccharomyces cerevisiae DPP1 gene encoding diacylglycerol pyrophosphate phosphatase

David A. Toke, Wendy Bennett, Deirdre A. Dillon, Wen I. Wu, Xiaoming Chen, Darin B. Ostrander, June Oshiro, Aida Cremesti, Dennis R. Voelker, Anthony S. Fischl, George M. Carman

Research output: Contribution to journalArticle

Abstract

Diacylglycerol pyrophosphate (DGPP) is involved in a putative novel lipid signaling pathway. DGPP phosphatase (DGPP phosphohydrolase) is a membrane-associated 34-kDa enzyme from Saccharomyces cerevisiae which catalyzes the dephosphorylation of DGPP to yield phosphatidate (PA) and then catalyzes the dephosphorylation of PA to yield diacylglycerol. Amino acid sequence information derived from DGPP phosphatase was used to identify and isolate the DPP1 (diacylglycerol pyrophosphate phosphatase) gene encoding the enzyme. Multicopy plasmids containing the DPP1 gene directed a 10-fold overexpression of DGPP phosphatase activity in S. cerevisiae. The heterologous expression of the S. cerevisiae DPP1 gene in Sf-9 insect cells resulted in a 500-fold overexpression of DGPP phosphatase activity over that expressed in wild-type S. cerevisiae. DGPP phosphatase possesses a Mg2+ - independent PA phosphatase activity, and its expression correlated with the overexpression of DGPP phosphatase activity in S. cerevisiae and in insect cells. DGPP phosphatase was predicted to be an integral membrane protein with six transmembrane-spanning domains. The enzyme contains a novel phosphatase sequence motif found in a superfamily of phosphatases. A dpp1Δ mutant was constructed by deletion of the chromosomal copy of the DPP1 gene. The dpp1Δ mutant was viable and did not exhibit any obvious growth defects. The mutant was devoid of DGPP phosphatase activity and accumulated (4-fold) DGPP. Analysis of the mutant showed that the DPP1 gene was not responsible for all of the Mg2+ -independent PA phosphatase activity in S. cerevisiae.

Original languageEnglish (US)
Pages (from-to)3278-3284
Number of pages7
JournalJournal of Biological Chemistry
Volume273
Issue number6
DOIs
StatePublished - Feb 6 1998
Externally publishedYes

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Gene encoding
Yeast
Saccharomyces cerevisiae
Genes
Phosphatidate Phosphatase
Phosphoric Monoester Hydrolases
Insects
Enzymes
diacylglycerol pyrophosphate phosphatase
Diglycerides
Amino Acid Sequence
Membrane Proteins
Plasmids
Membranes
Lipids
Amino Acids
Defects
diacylglycerol pyrophosphate

ASJC Scopus subject areas

  • Biochemistry

Cite this

Isolation and characterization of the Saccharomyces cerevisiae DPP1 gene encoding diacylglycerol pyrophosphate phosphatase. / Toke, David A.; Bennett, Wendy; Dillon, Deirdre A.; Wu, Wen I.; Chen, Xiaoming; Ostrander, Darin B.; Oshiro, June; Cremesti, Aida; Voelker, Dennis R.; Fischl, Anthony S.; Carman, George M.

In: Journal of Biological Chemistry, Vol. 273, No. 6, 06.02.1998, p. 3278-3284.

Research output: Contribution to journalArticle

Toke, DA, Bennett, W, Dillon, DA, Wu, WI, Chen, X, Ostrander, DB, Oshiro, J, Cremesti, A, Voelker, DR, Fischl, AS & Carman, GM 1998, 'Isolation and characterization of the Saccharomyces cerevisiae DPP1 gene encoding diacylglycerol pyrophosphate phosphatase', Journal of Biological Chemistry, vol. 273, no. 6, pp. 3278-3284. https://doi.org/10.1074/jbc.273.6.3278
Toke, David A. ; Bennett, Wendy ; Dillon, Deirdre A. ; Wu, Wen I. ; Chen, Xiaoming ; Ostrander, Darin B. ; Oshiro, June ; Cremesti, Aida ; Voelker, Dennis R. ; Fischl, Anthony S. ; Carman, George M. / Isolation and characterization of the Saccharomyces cerevisiae DPP1 gene encoding diacylglycerol pyrophosphate phosphatase. In: Journal of Biological Chemistry. 1998 ; Vol. 273, No. 6. pp. 3278-3284.
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AU - Ostrander, Darin B.

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