Kimball P M, Brattain M G, White W E
Biochem J. 1981 Jan 1;193(1):109-13. doi: 10.1042/bj1930109.
A sub-line with increased metastatic ability was previously isolated from an established human colonic carcinoma cell line [Kimball & Brattain (1980) Cancer Res. 40, 1574-1579]. The separation and characterization of the isoenzymes of N-acetyl-beta-D-hexosaminidase from each cell line are reported. The parental cell line contained A and B isoenzymes. The sub-line lacked the A-isoenzyme activity and contained an atypical B isoenzyme that was thermolabile, susceptible to alkylation and of lower molecular weight.
先前从一个已建立的人结肠癌细胞系中分离出了具有增强转移能力的亚系[金博尔和布拉廷(1980年),《癌症研究》40卷,第1574 - 1579页]。本文报道了每个细胞系中N - 乙酰 - β - D - 己糖胺酶同工酶的分离和特性。亲代细胞系含有A和B同工酶。亚系缺乏A同工酶活性,含有一种非典型的B同工酶,该同工酶热不稳定,易被烷基化且分子量较低。