Purification of chicken liver ribonucleases by affinity chromatography with UMP-Sepharose (nucleosides and nucleotides. LII).
作者:KAZUNOBU MIURA、YASUHIKO INOUE、YUKARI HASHIMOTO、ATSUKO INOUE、TOHRU UEDA
DOI:10.1248/cpb.32.4054
日期:——
A procedure for the preparation of chicken liver ribonucleases (RNases) is described, involving affinity chromatography on Sepharose coupled with 5'-amino-5'-deoxyuridine 2'(3')-phosphate. Two kinds of RNases having acidic pH optima were obtained. One RNase exhibited preferential nucleolytic activity toward poly C rather than poly U and the other was specific for poly U. The former RNase may be identical to that reported by Levy et al. and the latter resembles acid RNase detected in several mammalian tissues.
本研究描述了一种制备鸡肝核糖核酸酶(RNase)的方法,包括用 5'-氨基-5'-脱氧尿苷 2'(3')-磷酸酯在 Sepharose 上进行亲和层析。研究获得了两种最适 pH 值为酸性的 RNase。前一种 RNase 可能与 Levy 等人报道的 RNase 相同,而后一种 RNase 与在几种哺乳动物组织中检测到的酸性 RNase 相似。