An explanation for the different inhibitory characteristics of human serum butyrylcholinesterase phenotypes deriving from inhibition of atypical heterozygotes.

Abstract excerpt

The time course of inhibition of butyrylcholinesterase (EC 3.1.1.8) by the dimethylcarbamate Ro 02-0683 in sera taken from patients heterozygous for the usual (U), atypical (A), K or J variants was followed using propionylthiocholine as substrate. Data obtained were used to determine rate constants of inhibition together with the contribution made by each variant to total enzyme activity. The findings...

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