Wilcox G, Clemetson K J, Santi D V, Englesberg E
Proc Natl Acad Sci U S A. 1971 Sep;68(9):2145-8. doi: 10.1073/pnas.68.9.2145.
The araC gene product, a regulatory protein required for expression of the L-arabinose operon, has been purified by affinity chromatography on Sepharose 4B to which 4-aminophenyl-beta-D-6-deoxygalactopyranoside (an anti-inducer of the L-arabinose operon) had been covalently attached by means of a 4-aminophenylbutanamido side chain. Evidence is presented showing that the protein binds specifically to ara DNA.
阿拉伯糖操纵子表达所需的调节蛋白——阿拉伯糖操纵子阻遏蛋白(araC基因产物),已通过在共价连接了4-氨基苯基-β-D-6-脱氧吡喃半乳糖苷(一种阿拉伯糖操纵子的抗诱导剂)的琼脂糖4B上进行亲和层析而得到纯化,4-氨基苯基-β-D-6-脱氧吡喃半乳糖苷通过4-氨基苯基丁酰胺侧链共价连接。文中给出的证据表明该蛋白能特异性结合阿拉伯糖操纵子DNA。