PMID: 67Nov 20, 1975

Cholinesterases from plant tissues. VI. Preliminary characterization of enzymes from Solanum melongena L. and Zea mays L

Biochimica Et Biophysica Acta
R A Fluck, M J Jaffe

Abstract

Enzymes capable of hydrolyzing esters of thiocholine have been assayed in extracts of Solanum melongena L. (eggplant) and Zea Mays L. (corn). The enzymes from both species are inhibited by the anti-cholinesterases neostigmine, physostigmine, and 284c51 and by AMO-1618, a plant growth retardant and they both have pH optima near pH 8.0. The enzyme from eggplant is maximally active at a substrate concentration of 0.15 mM acetylthiocholine and is inhibited at higher substrate concentrations. On the basis of this last property, the magnitude of inhibition by the various inhibitors, and the substrate specificity, we conclude that the enzyme from eggplant, but not that from corn, is a cholinesterase.

Citations

Jun 22, 2016·Annals of the New York Academy of Sciences·Qinggeng ZhuangChristopher M Hadad
Oct 31, 2002·Phytomedicine : International Journal of Phytotherapy and Phytopharmacology·S Mesia-VelaA J Lapa
Nov 1, 1986·The Histochemical Journal·M Raineri, P Modenesi

Related Concepts

Acetylthiocholine
Cholinesterase Inhibitors, Reversible
Cholase
Zea luxurians
Hydrogen-Ion Concentration
Structure-Activity Relationship
Subcellular Fractions

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