Abstract

Two minor phospholipid components were isolated from a lipid extract of pig lungs. One was identified as phosphatidylglycerol. The results of alkaline hydrolysis, periodate oxidation and acetolysis showed that the other was a structural isomer of phosphatidylglycerol with the structure of a lyso- bis-phosphatidic acid. Its chromatographic characteristics on thin-layer plates of silica gel and on silicic acid-impregnated paper were quite distinct from those of phosphatidylglycerol. Both of these phospholipids were also present in lipid extracts of rat lungs and rabbit lungs.

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