Abstract
The ability in vitro of yeast mitochondrial and microsomal fractions to synthesize lipid de novo was measured. The major phospholipids synthesized from sn-[2-(3)H]glycerol 3-phosphate by the two microsomal fractions were phosphatidylserine, phosphatidylinositol and phosphatidic acid. The mitochondrial fraction, which had a higher specific activity for total glycerolipid synthesis, synthesized phosphatidylglycerol, phosphatidylethanolamine, phosphatidylinositol, phosphatidylserine and phosphatidic acid, together with smaller amounts of neutral lipids and diphosphatidylglycerol. Phosphatidylcholine synthesis from both S-adenosyl[Me-(14)C]methionine and CDP-[Me-(14)C]choline appeared to be localized in the microsomal fraction.
MeSH Terms
Chromatography, Thin Layer
Cytidine Diphosphate Choline/metabolism
Glycerophosphates/metabolism
In Vitro Techniques
Microsomes/metabolism
Mitochondria/metabolism
Phosphatidic Acids/biosynthesis
Phosphatidylcholines/biosynthesis
Phosphatidylethanolamines/biosynthesis
Phosphatidylinositols/biosynthesis
Phosphatidylserines/biosynthesis
Phospholipids/analysis,biosynthesis
S-Adenosylmethionine/metabolism
Saccharomyces cerevisiae/metabolism
Subcellular Fractions
Chemicals
Glycerophosphates
Phosphatidic Acids
Phosphatidylcholines
Phosphatidylethanolamines
Phosphatidylinositols
Phosphatidylserines
Phospholipids
Cytidine Diphosphate Choline
S-Adenosylmethionine
Authors & Affiliations
3 authors, click to expand affiliations / ORCID
Cobon G S
Crowfoot P D
Linnane A W
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