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. 1979 May-Jun;28(3):183-93.

Phospholipid composition of photosynthetic membranes of Rhodopseudomonas capsulata

R Casadio, B A Melandri, M V Piretti, G P Serrazanetti
  • PMID: 553902

Phospholipid composition of photosynthetic membranes of Rhodopseudomonas capsulata

R Casadio et al. Ital J Biochem. 1979 May-Jun.

Abstract

The phospholipids and the fatty acids present in membranes of cells of Rhodopseudomonas capsulata, grown photosynthetically in anaerobiosis, were analyzed by thin layer chromatography and gas chromatography-mass spectrometry. The three phospholipids detected, phosphatidylcholine, phosphatidylethanolamine and phosphatidylglycerol, contained about 80% of a single monounsaturated C18 fatty acid, cis-vaccenic acid. These membranes offer therefore a naturally occurring model system endowed with an extremely simplified phospholipid complement. The data indicate moreover that the biosynthetic pathway of unsaturated fatty acids present in these facultative aerobic bacteria proceeds only via the 3-hydroxydecanoyl acyl carrier protein dehydratase (E.C. 4.2.1.60).

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