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Gas Chromotographic-Mass Spectrometric Approach to Examining Stereoselective Interaction of Human Plasma Proteins with Soman

机译:气相色谱 - 质谱法检测人血浆蛋白与索曼的立体选择性相互作用

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The organophosphorus (OP) nerve agent soman (GD) contains two chiral centers (a carbon and a phosphorus atom), resulting in four stereoisomers (C+P+, C-P+, C+P-, and C-P-); the P- isomers exhibit a mammalian toxicity that is approximately 1000-fold greater than that of the P+ isomers. The capacity to assess the binding or hydrolysis of each of the four stereoisomers is an important tool in the development of enzymes with the potential to protect against GD intoxication. Using a gas chromatography-mass spectrometry-based approach, we have examined the capacity of plasma-derived human serum albumin, plasma-purified human butyrylcholinesterase, goat mild-derived recombinant human butyrylcholinesterase, and recombinant human paraoxonase 1 to interact with each of the four stereoisomers of GD in vitro at pH 7.4 and 25-deg C.

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