title: Some properties of cholinesterase of the plant nematode Aphelenchoides ritzema-boosi.
abstract: Activity and properties of cholinesterase from Aphelenchoides ritzema-boosi, a plant feeding nematode, were investigated by testing the reaction of the enzyme with different substrates and inhibitors. Butyrylthiocholine was a better substrate than propionyl- and acetylthiochine. When compared with mammaliian erythrocyte and plasma cholinesterase, the nematode enzyme was found to be extremely insensitive towards a number of well-known organophosphorus and carbamate inhibitors.
mesh_terms: D000110:Acetylcholinesterase / Q000097:blood; D000122:Acetylthiocholine / Q000378:metabolism; D000818:Animals; D002092:Butyrylthiocholine / Q000378:metabolism; D002417:Cattle; D002802:Cholinesterases / Q000097:blood / Q000378:metabolism*; D004305:Dose-Response Relationship, Drug; D004912:Erythrocytes / Q000187:drug effects / Q000201:enzymology; D006801:Humans; D007306:Insecticides / Q000494:pharmacology; D007700:Kinetics; D009348:Nematoda / Q000201:enzymology*; D009943:Organophosphorus Compounds; D010830:Physostigmine / Q000494:pharmacology; D011422:Propionates / Q000378:metabolism; D013860:Thiocholine / Q000031:analogs & derivatives / Q000378:metabolism
chemical_list: D007306:Insecticides; D009943:Organophosphorus Compounds; D011422:Propionates; D000122:Acetylthiocholine; D002092:Butyrylthiocholine; D013860:Thiocholine; D010830:Physostigmine; D000110:Acetylcholinesterase; D002802:Cholinesterases