Biomedical subjects
Publications and source records attributed to R Rava.
An enzymatic method for determination of Hg++ concentration is suggested. This method is based on the strong inhibitory effect of Hg++ on alcoholdehydrogenase (ADH). A correlation between per cent inhibition of ADH and [Hg++]/[ADH] was found. It was possible to determine [Hg++] in a range of values of [Hg++]/[ADH] from 1,58 to 72. A minimum Hg++ concentration of 3,3 X 10(-9) M was dosed.
Partial purification and characterization of a D-aminoacid oxidase from Octopus vulgaris hepatopancreas are described. An about 25-fold purification was achieved. The pH optimum was near to 9; molecular weight, determined by gel-filtration through G 200 Sephadex was approximately 55000; apparent Km was 10(-3)M. The enzyme showed great affinity for D-Ala and D-Val. Recovery of activity, due to pre-incubation with FAD was observed. The enzyme is strongly inhibited by benzoic acid and moderately inhibited by p-aminobenzoic acid.
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