title: [Cholinesterase activity in tissues of some crab species from the Japan Sea].
abstract: The comparative study of the cholinesterase activity in some crab species was carried out for the first time with use of a set of thiocholine substrates. The substrate specificity was studied in stellar nerve, heart, and hemolymph of three crab species. The crab hemolymph was shown to be characterized by the highest enzyme activity. The enzyme from various crab organs has different structure o substrate specificity. Properties of crab enzymes was compared with acetylcholinesterase (AChE) of human blood erythrocytes, butyrylcholinesterase (BuChE) of horse blood serum, enzyme o squids and bivalve molluscs. The obtained data allow the conclusion to be made on differences in properties of enzymes both at the interspecies and at the tissue levels.
authors.forename: N N
authors.initials: NN
authors.lastname: Kovalev
authors.forename: E V
authors.initials: EV
authors.lastname: Mikheev
authors.forename: A I
authors.initials: AI
authors.lastname: Chepkasova
mesh_terms: D000818:Animals; D002417:Cattle; D002802:Cholinesterases / Q000737:chemistry*; D003445:Crustacea / Q000201:enzymology*; D006458:Hemolymph / Q000201:enzymology; D006736:Horses; D007700:Kinetics; D009206:Myocardium / Q000201:enzymology; D009417:Nerve Tissue / Q000201:enzymology; D013379:Substrate Specificity; D013860:Thiocholine / Q000737:chemistry; D014018:Tissue Distribution
chemical_list: D013860:Thiocholine; D002802:Cholinesterases