Anionic site interactions in human butyrylcholinesterase disrupted by two single point mutations.

Abstract excerpt

Structure-function relationships of recombinant human butyrylcholinesterase (CHE) variants were investigated by Xenopus oocyte microinjection. A Ser-425 to Pro-425 mutation failed to modify ligand binding properties. In contrast, Asp-70 to Gly-70 substitution significantly reduced CHE binding capacity for succinylcholine and specific inhibitors, demonstrating Asp-70 as a key anionic site component for certain...

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