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Indian J Biochem Biophys ; 1991 Aug; 28(4): 252-6
Artículo en Inglés | IMSEAR | ID: sea-26968

RESUMEN

A naturally occurring inhibitor of serine hydroxymethyltransferase (EC 2.1.2.1) in mung bean seedlings extracts was purified by ammonium sulphate precipitation, phenyl-Sepharose chromatography followed by heating to release the inhibitor bound to the protein. The inhibitor had an absorption maximum at 200 nm, was not precipitated by trichloroacetic acid, was dialysable and resistant to inactivation by heating at 98 degrees C for 4 hr, protease and ribonuclease digestion; but was acid labile. The chromatographically pure preparation inhibited both mung bean and sheep liver SHMT. Qualitative and quantitative analyses indicated that it contained a carbohydrate moiety, an O-amino and vicinal diol groups. Paper electrophoresis at pH 4.3 suggested that the inhibitor was positively charged.


Asunto(s)
Animales , Inhibidores Enzimáticos/química , Fabaceae , Glicina Hidroximetiltransferasa/antagonistas & inhibidores , Hígado/enzimología , Plantas Medicinales , Ovinos
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