221 Transformation of E. coli with pGAL™ (blue colony) - EDVOTEK

Transformation of E. coli with pGAL (blue colony) EDVO-Kit # 221 11Transformation of E.coliSetting up the Transformation andControl Experiment1. Put your initials or group number on thetubes labeled “pGAL DNA” (contains 25 µlof plasmid DNA) and “Control Buffer” (contains25 µl of buffer) . Place them back on ice.2. Set up the Control:• Using a sterile transfer pipet, transfer0.25 ml (250 µl) of cell suspensionfrom the tube “Cells” to thetube “Control Buffer”.• Carefully place the pipet back intothe wrapper.• Cap the tube; mix by tapping. Putthe tube back on ice.ControlBufferpGALDNApGALDNAControlBufferThe Experiment1 ml3. Set up the transformation:• Using the same pipet from Step 2, transfer 0.25 ml(250 µl) of cell suspension from the tube “Cells” tothe tube “pGAL DNA”.• Cap the tube; mix by tapping. Put the tubeback on ice.0.5 ml4. Incubate the cells prepared in steps 1 - 3 on icefor 10 minutes.- DNA+ DNA0.25 ml~ 0.06 ml5. Place both transformation tubes at 42°C for90 seconds.< 0.02 mlThis heat shock step facilitates the entry ofDNA in bacterial cells.Guide for SterileCalibratedTransfer Pipet6. Return both tubes to the ice bucket andincubate for for 1 minute.- DNA+ DNA- DNA+ DNADuplication of this document, in conjunction with use of accompanying reagents, is permitted for classroom/laboratoryuse only. This document, or any part, may not be reproduced or distributed for any other purpose withoutthe written consent of EDVOTEK, Inc. Copyright © 1989, 90, 93, 94, 97, 98, 2000, 2005, EDVOTEK, Inc., all rightsreservedEVT 005077KThe Biotechnology Education Company ® • 1-800-EDVOTEK • www.edvotek.com