Biology 101
Monday, May 2, 2011
Transformation Lab!
This lab was pretty neat! We went through a step-by-step process to figure out a different transformed version of bacteria. For instance we found out if they were more similar to the original non-transformed E. coli colonies. The genetically transformed bacterial cells were transformed after we did these steps (some pictures shown above):
Label one closed micro test tube +pGLO and another -pGLO
Open tubes and use transfer pipet to transfer 250 ul of CaC1
2
Place tubes on ice
Pick up colony of bacteria with sterile loop
Spin loop in +pGLO tube until colony is dispersed
Place back in ice
Repeat with -pGLO tube
Examine pGLO plasmid DNA solution with UV lamp
Immerse new sterile loop into the plasmid DNA stock tube and withdraw a loopful
Mix loopful into the cell suspension of +pGLO tube
Close and return to ice
Close -pGLO tube but DO NOT add plasmid DNA
Incubate tubes on ice for 10 minutes!
Put both tubes in water bath at 42 degrees C for 50 seconds
Place back in ice for 2 minutes
Remove and open a tube and use new sterile pipet to add 250 ul of LB nutrient broth
Reclose it and repeat with other tube
Incubate tubes for 10 minutes
Pipet 100 ul of the transformation and control suspension onto the plates
Spread suspensions evenly around surface
Stack plates and tape together
Stack and place upside down in 37 degrees C incubator until next day
When we were all done the results were pretty cool! It came out glowing all purple and what not! :) I was surprised because I didn't really think it would look all that cool, but I guess all those steps paid off! It looked awesome! :)
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