释义 |
x-gal 英'eksɡ'æl美'eksɡ'æl BNC¹⁷³⁹⁹⁵⁺²乳糖酶底物³³; 酶切后显蓝色³³.X-Gal 5-bromo-4-chloro-3-indolyl-beta-D-galactopyranoside is an inert chromogenic substrate for beta-galactosidase; an enzyme that promotes lactose utilization³⁴.;Beta-galactosidase hydrolyzes X-Gal into a colorless galactose and 4-chloro-3-brom-indigo which forms an intense blue precipitate |