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Abstract
1.1. Studies of the properties and specificity of deoxyribonucleases in sixteen species of marine invertebrates and fishes showed three groups of enzymes with different properties, viz. acid, neutral and alkaline DNAses.2.2. Acid DNAses from these animals slightly differed in pH optimum and sensitivity to Mg2+ ions, but they preferentially hydrolysed native DNA at C5 of deoxyribose of purine nucleotides as endonucleases.3.3. Neutral DNAses in these species differed in specificity to the secondary structure of DNA and also in the position of the cleaved phosphodiester bond at C3 and C5 of di-ribose nucleotides.4.4. The alkaline DNAses found in the tissues of all the animals studied degraded the native and denatured DNA at C3 of di-ribose in pyrimidine neucleotides.
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Schedule a callMore From: Comparative Biochemistry and Physiology -- Part B: Biochemistry and Molecular Biology
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