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Transformation of E. coli with pGAL™ (Blue Colony)

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In this experiment, your students will develop an understanding of bacterial transformation by plasmid DNA by introducing an opportunity to observe an acquired phenotypic trait of the transformed bacterial cells. The presence of blue bacterial colonies visually demonstrates the expression of a specific gene for the Lac+ phenotype.

No IPTG used in this experiment.

• Explore genetic engineering, the central dogma, and enzymes in this packed experiment
• Transform E.coli with a plasmid DNA containing β-galactosidase and β-lactamase genes
• Identify transformed cells based on their blue color and ability to survive on agar with ampicillin
• Calculate transformation efficiency and compare results to experimental controls


Group Size:

For 10 lab groups

Time Required:

Complete in 50 minutes and grow overnight

Kit Includes:

Instructions, BactoBeads™, plasmid DNA, buffer, media, ampicillin, X-Gal, ReadyPour™ agar, petri dishes, sterile pipettes, loops and microtubes.

All You Need:

Automatic micropipette (5-50µl) and tips, two water baths (37˚C and 42˚C), incubation oven, thermometer, pipet pumps or bulbs, ice, marking pens, bunsen burner, hot plate or microwave oven, and hot gloves


Some Components Require Refrigerator and Freezer Storage

Transformation of E. coli with pGAL™ (Blue Colony) 共有 169 則評價

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