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Enzymatic hydrolysis of desoxyribonucleic acid prepared with the use of strong sodium hydroxide

โœ Scribed by Charles A. Zittle


Publisher
Elsevier Science
Year
1948
Tongue
English
Weight
160 KB
Volume
245
Category
Article
ISSN
0016-0032

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โœฆ Synopsis


Hydroxide.--CHARLES A. ZITTLE. It was previously reported (1) that desoxyribonucleic acid (DNA) prepared under mild conditions (method of Hammarsten) (2) was readily hydrolyzed by specific nuclease so that it became soluble in HC1, whereas DNA prepared with the use of hot 1.25 N NaOH (method of Levene) (3) was not hydrolyzed by the nuclease. Further study has shown that under the proper conditions the alkali-treated DNA can be slowly hydrolyzed by the nuclease at a rate about 20 per cent. of that of DNA (Hammarsten). The previously reported .erroneus conclusion that DNA (Levene) could not be hydrolyzed was in consequence of this low rate of hydrolysis and the instability of the enzyme under the conditions used.


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## Effect of Specific Nuclease and Phosphoesterase on Desoxyribonucleic Acid Prepared with the Use of Strong Sodium Hydroxide (Method of Levene ).--C~IARLES A. ZITTLE. Desoxyribonucleic acid prepared under mild conditions is readily hydrolyzed by specific nuclease so that it becomes soluble in HCI

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