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Various functional characteristics of enolase isoenzymes in mammals
Authors:K B Nazarian  B A Kazarian  N G Karapetian
Abstract:Considerable stability of beta beta- (muscular) and gamma gamma- (neurospecific) forms to the denaturing influence of neutral salts of alkali metals is shown on purified isoenzymes (alpha alpha-, beta beta-, gamma gamma-forms) of beef brain and rabbit muscle. The rate of influence of these salts on the enzymic activity of the mentioned isoenzymes corresponds to the "lyotropic" series. Km of alpha alpha- and gamma gamma-isoenzymes are determined for 2-phosphoglycerate and phosphoenolpyruvate. It is found that alpha alpha-isoenzyme has larger affinity to phosphoenolpyruvate than gamma gamma-isoenzyme and it appears to play an essential role in participation of the given isoenzymes in the glycolysis and glyconeogenesis processes.
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