Effectively screen colonies with X-Gal, an inert chromogenic substrate for beta-galactosidase which hydrolyzes X-Gal, forming an intense blue precipitate.
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IPTG (isopropylthio-β-galactoside), a structural non-metabolizable analogue of allolactose, is an inducer of β-galactosidase activity in bacteria and is suitable for use with X-Gal or Bluo-Gal to detect lac gene activity in cloning procedures.
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X-Gal (5-bromo-4-chloro-3-indolyl-β-D-galactoside) is a histochemical substrate for β-galactosidase. This substrate yields a blue precipitate upon hydrolysis, making it suitable for use in immunoblotting or immunocytochemical assays.
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Invitrogen Molecular biology grade, 0.5 M EDTA, pH 8.0 solution is supplied in one bottle. The solution is certified RNase-free, economical, and ready-to-use.
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Stabilize enzymes and other proteins which possess free sulfhydryl groups with DTT, shown to restore activity lost by oxidation of these groups in vitro.
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Molecular biology grade, Invitrogen 1M MgCl2 solution is supplied in one bottle containing 100 mL. The solution is certified RNase-free, economical, and ready-to-use.
Invitrogen Yeast tRNA purified from brewer's yeast. When used at a final concentration of 10 to 20 μg/mL, yeast tRNA is an effective coprecipitant to aid in recovery of small amounts of nucleic acids.
Invitrogen Molecular biology grade, 3M Sodium Acetate solution is supplied in one bottle containing 100 mL. The solution is certified RNase-free, economical, and ready-to-use.