title: Cardiolipin: a stereospecifically spin-labeled analogue and its specific enzymic hydrolysis.
abstract: The spin-labeled cardiolipin 1-(3-sn-phosphatidyl)-3-[1-acyl-2-(16-doxylstearoyl)glycero(3)phosphol]-sn-glycerol has been prepared. The stereoselective synthesis makes use of the monolysocardiolipin 1-(3-sn-phosphatidyl)-3-[1-acyl-2-lyso-sn-glycero(3)phospho]-sn-glycerol, available from the stereospecific hydrolysis of cardiolipin by phospholipase A2 (phosphatide 2-acylhydrolase, EC 3.1.1.4) of Trimeresurus flavoviridis. The results of treatment of the spin-labeled cardiolipin with the cardiolipin-specific phospholipase D (phosphatidylcholine phosphatidohydrolase, EC 3.1.4.4) (Hemophilus parainfluenzae) of known specificity and with phospholipase C (phosphatidylcholine cholinephosphohydrolase, EC 3.1.4.3) of Bacillus cereus are consistent with the assigned structure. The spin-labeled cardiolipin is further characterized and the unique features of this diastereomer are discussed in the context of the unusual stereochemistry of the natural phospholipid.
mesh_terms: D002308:Cardiolipins / Q000138:chemical synthesis / Q000378:metabolism; D008968:Molecular Conformation; D010740:Phospholipases / Q000378:metabolism; D013113:Spin Labels / Q000138:chemical synthesis; D013379:Substrate Specificity
chemical_list: D002308:Cardiolipins; D013113:Spin Labels; D010740:Phospholipases
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