Purdue/11 July 2008

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Glycerol Stocks!

 * Today making glycerol stocks of SOS (J22106) and LacZ (I732017) parts from stabs sent by iGEM
 * We only have 100% glycerol (sterile), so we're just going to follow the same iGEM protocol but with 100% glycerol
 * Dr. Clase also suggested a somewhat different protocol for making stocks, so we're going to do both side-by-side and see which is better
 * Following iGEM protocol:
 * Make o/n culture in antibiotic (amp) LB broth --did this yesterday
 * Combine 1mL of overnight w/ 150 uL of sterile 100% glycerol solution in screw-top cryotube (make sure tube is labeled with part #, plasmid, and antibiotic resistance)
 * Vortex briefly
 * Incubate at room temp. for 1/2 hour and put in -80C freezer
 * Following Dr. Clase's protocol:
 * Mix 750uL 100% glycerol and 250uL stock colony in cryotube
 * Vortex
 * Put directly in -80C freezer

In other news, the bead plating did not help the other Lac transformations to work, although the pUC19 still grew quite well.

Edited by Janie Stine