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- **************************************************
- * CDP-alcohol phosphatidyltransferases signature *
- **************************************************
-
- A number of phosphatidyltransferases, which are all involved in phospholipid
- biosynthesis and that share the property of catalyzing the displacement of CMP
- from a CDP-alcohol by a second alcohol with formation of a phosphodiester bond
- and concomitant breaking of a phosphoride anhydride bond share a conserved
- sequence region [1,2]. These enzymes are:
-
- - Ethanolaminephosphotransferase (EC 2.7.8.1) from yeast (gene EPT1).
- - Diacylglycerol cholinephosphotransferase (EC 2.7.8.2) from yeast (gene
- CPT1).
- - Phosphatidylglycerophosphate synthase (EC 2.7.8.5) (CDP-diacylglycerol--
- glycerol-3-phosphate 3-phosphatidyltransferase) from Escherichia coli.
- - Phosphatidylserine synthase (EC 2.7.8.8) (CDP-diacylglycerol--serine O-
- phosphatidyltransferase) from yeast (gene CHO1).
- - Phosphatidylinositol synthase (EC 2.7.8.11) (CDP-diacylglycerol--inositol
- 3-phosphatidyltransferase) from yeast (gene PIS).
-
- These enzymes are proteins of from 200 to 400 amino acid residues. The
- conserved region contains three aspartic acid residues and is located in the
- N-terminal section of the sequences.
-
- -Consensus pattern: D-G-x(2)-A-R-x(8)-G-x(3)-D-x(3)-D
- -Sequences known to belong to this class detected by the pattern: ALL.
- -Other sequence(s) detected in SWISS-PROT: NONE.
- -Last update: December 1991 / Pattern and text revised.
-
- [ 1] Nikawa J.-I., Kodaki T., Yamashita S.
- J. Biol. Chem. 262:4876-4881(1987).
- [ 2] Hjelmstad R.H., Bell R.M.
- J. Biol. Chem. 266:5094-5134(1991).
-