Illingworth J A, Tipton K F
Biochem J. 1970 Jun;118(2):253-8. doi: 10.1042/bj1180253.
The NADP-dependent isocitrate dehydrogenase from pig liver soluble fraction was purified over 500-fold with an overall yield of 25%. The purified enzyme, which is homogeneous by all the usual criteria, has a molecular weight of about 75000 and is composed of two identical subunits. This has been demonstrated by ultracentrifugation, fluorescence titration and peptide ;fingerprinting'. The maximal turnover number, extinction coefficients at 280nm and 260nm and amino acid analysis are described.
从猪肝可溶性部分纯化得到的依赖烟酰胺腺嘌呤二核苷酸磷酸(NADP)的异柠檬酸脱氢酶,纯化倍数超过500倍,总产率为25%。通过所有常规标准鉴定,该纯化酶均一,分子量约为75000,由两个相同的亚基组成。超速离心、荧光滴定和肽“指纹图谱”已证实了这一点。文中还描述了该酶的最大周转数、280nm和260nm处的消光系数以及氨基酸分析结果。