X-gal

 
['eksɡ'?l]     ['eksɡ'?l]    
  • 乳糖酶底物; 酶切后顯藍色.
  • X-Gal (5-bromo-4-chloro-3-indolyl-beta-D-galactopyranoside) is an inert chromogenic substrate for beta-galactosidase; an enzyme that promotes lactose utilization.;Beta-galactosidase hydrolyzes X-Gal into a colorless galactose and 4-chloro-3-brom-indigo which forms an intense blue precipitate

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