Purification and Some Properties of Two Ribonucleases from Euphausia superba
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概要
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Two ribonucleases (RNases) designated RNase I and RNase II were found in Euphausia superba and isolated by (NH4)2SO4 fractionation, 2 cycles of CM-cellulose chromatography and gel nitration on Sephadex G-100. This procedure resulted in a 2, 116-fold purification of RNase I and a 130-fold purification of RNase II. The molecular weight of both purified enzymes was estimated by gel filtration to be 31, 500. The isoelectric points were 6.0 (RNase I) and 7.0 (RNase II). Each enzyme hydrolyzed poly A-U, poly U but did not degrade poly G, poly C and DNA. Both enzymes were classified as endonuclease from the hydrolysis product of yeast RNA and poly A. The enzymes were located mainly in the cardiac and pyloric portion of the stomach.
- 社団法人 日本農芸化学会の論文
著者
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Kimoto Koichi
Department Of Clinical Nutrition Tokyo Kasei University
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Murakami Kazuo
Institute Of Applied Biochemistry University Of Tsukuba
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VAN Thanh
Institute of Applied Biochemistry, The University of Tsukuba
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