Title : The crystal structure of the complex of the anticancer prodrug 7-ethyl-10-[4-(1-piperidino)-1-piperidino]-carbonyloxycamptothecin (CPT-11) with Torpedo californica acetylcholinesterase provides a molecular explanation for its cholinergic action.

Pub. Date : 2005 Jun

PMID : 15772291






7 Functional Relationships(s)
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1 Previous studies have indicated that CPT-11 can inhibit acetylcholinesterase (AChE), and here, we provide a detailed analysis of the inhibition of AChE by CPT-11 and by structural analogs. Irinotecan acetylcholinesterase (Cartwright blood group) Homo sapiens
2 Previous studies have indicated that CPT-11 can inhibit acetylcholinesterase (AChE), and here, we provide a detailed analysis of the inhibition of AChE by CPT-11 and by structural analogs. Irinotecan acetylcholinesterase (Cartwright blood group) Homo sapiens
3 Previous studies have indicated that CPT-11 can inhibit acetylcholinesterase (AChE), and here, we provide a detailed analysis of the inhibition of AChE by CPT-11 and by structural analogs. Irinotecan acetylcholinesterase (Cartwright blood group) Homo sapiens
4 These studies demonstrate that the terminal dipiperidino moiety in CPT-11 plays a major role in enzyme inhibition, and this has been confirmed by X-ray crystallographic studies of a complex of the drug with Torpedo californica AChE. Irinotecan acetylcholinesterase (Cartwright blood group) Homo sapiens
5 The 3D structure of the CPT-11/AChE complex also permits modeling of CPT-11 complexed with mammalian butyrylcholinesterase and carboxylesterase, both of which are known to hydrolyze the drug to the active metabolite. Irinotecan acetylcholinesterase (Cartwright blood group) Homo sapiens
6 The 3D structure of the CPT-11/AChE complex also permits modeling of CPT-11 complexed with mammalian butyrylcholinesterase and carboxylesterase, both of which are known to hydrolyze the drug to the active metabolite. Irinotecan acetylcholinesterase (Cartwright blood group) Homo sapiens
7 Overall, the results presented here clarify the mechanism of AChE inhibition by CPT-11 and detail the interaction of the drug with the protein. Irinotecan acetylcholinesterase (Cartwright blood group) Homo sapiens