Weber Scientific X-GAL
Weber Scientific X-GAL is chromogenic substrate of β-Galactosidase used in combination with IPTG for detection of β-Galactosidase activity in bacterial colonies. X-GAL is cleaved at the B1-4 bond between galactose and the 5-Bromo-4chloro-3-indolyl portion of X-GAL by β-Galactosidase via hydrolysis. The cleavage of X-GAL resulted in the production of water insoluble blue dichloro-dibromo-indigo precipitate. In cloning strategies with vectors such as Lambda-11, M13amp18 and 19, PUC18 and 19, Pur222 the E.coli lacZ gene is transformed to lac+ cells. After transformation the cells show β-Galactosidase activity in the presence of media containing X-GAL and IPTG. The insertion of a DNA fragment into the cloning sites of the lacZ gene results in the disruption of β-Galactosidase activity leading to the appearance of white colonies. Non-recombinant cells product a blue indigo dye.
Soluble in DMSO and DMF. Store at 2-8°C. [5-Bromo-$chloro-3-indolyl-β-D-galactoside]
Key Features
- CAS No. 7240-90-6
- C14H15BrCINO6
- MW 408.6
- Purity >99%
| Item No. | Alt. Part No. | Product Description | Unit of Measure | Your Cost | Purchase |
|---|---|---|---|---|---|
|
X GAL 50 G
RPIB71800-500
|
EF21417 | 50 g | Each |
$4,261.95
|
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X GAL 100MG CAS 7240 90 6
RPIB71800-01
|
EF21410 | 100 mg | Each |
$40.29
|
|
|
X GAL 10G CAS 7240 90 6
RPIB71800-100
|
EF21411 | 10 g | Each |
$853.71
|
|
|
X GAL 5G CAS 7240 90 6
RPIB71800-50
|
EF21414 | 5 g | Each |
$475.71
|
|
|
X GAL 1G CAS 7240 90 6
RPIB71800-10
|
EF21412 | 1 g | Each |
$105.71
|
|
|
X GAL 25 G
RPIB71800-250
|
EF21416 | 25 g | Each |
$1,502.95
|
|
|
X GAL 250MG CAS 7240 90 6
RPIB71800-025
|
EF21413 | 250 mg | Each |
$49.14
|