X-Gal and IPTG
Our X-Gal and IPTG products are intended to be used together for blue-white colony screening. X-Gal (5-Bromo-4-Chloro-3-Indolyl-beta-D-Galactoside) is a chromogenic substrate for beta-galactosidase that yields a blue precipitate upon hydrolysis, while IPTG (isopropyl beta-D-1-thiogalactopyranoside) induces the transcription of genes from the lac and tac operons in bacteria, notably the hydrolase enzyme beta-galactosidase (ß-Gal).
Select from the following X-Gal and IPTG products:
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