Bovine lens cytoplasmic aldehyde dehydrogenase exhibits Michaelis-Menten kinetics with acetaldehyde, glyceraldehyde 3-phosphate, p-nitrobenzaldehyde, propionaldehyde, glycolaldehyde, glyceraldehyde, phenylacetylaldehyde and succinic semialdehyde as substrates. The enzyme was also active with malondialdehyde, and exhibited an esterase activity. Steady-state kinetic analyses show that the enzyme ...

An enzyme catalyzing the synthesis of L-cystathionine from the succinyl ester of L-homoserine and L-cysteine was isolated from a Salmonella mutant blocked in another step of methionine synthesis, and derepressed for cystathionine y-synthetase formation. The approximate molecular weight of the enzyme was 155,000 and it was unchanged after removal of tightly bound pyridoxal phosphate. In the abse...

It has been suggested that mercaptans are important factors in the pathogenesis of hepatic encephalopathy. Using a gas liquid chromatographic technique which uses propanethiol as internal standard and a sulphur specific detector, blood methanethiol concentration was found to be significantly risen in encephalopathic patients with liver disease (13.2 +/- 1.0 nmol/ml; n = 47) compared with contro...

The object of the work on the oxidation of optically active thio compounds to the corresponding sulfo derivatives was discussed in the preceding series of articles.’ It will be referred to in this place very briefly. It is desired, first, to follow the effect on optical rotation of the change in polarity of a single group attached to the asymmetric carbon atom; second, to observe in substituted...

Today, the urgent task is synthesis of new nanostructured composite sorbents used for complete utilization various wastes oil and gas refineries, improving technology processes cleaning natural tail exhaust gases from acidic impurities, increasing stability physicochemical properties environmental conditions processing secondary absorbents refineries. Recently, in world industrial enterprises, ...