PCR for Bio113

PCR Verification of Successful GGA

If you want to use PCR to verify that GGA has happened, you can amplify the plasmid DNA inside the cells you grew overnight. After PCR, you will need to analyze the PCR product (often called an amplicon) by gel electrophoresis (2.0% agarose gel).

1. Use negative control colonies as template to see the MW of the PCR product when TT is still in the plasmid and no GGA has occurred. Run one lane of this negative control PCR product for each row on your gel.
2. Use these two primers:

• Forward = 5’ GAATTCGCGGCCGCTTCTAG 3’
• Reverse = 5’ TTTGATAACATCTTCGGAGG 3’
• PCR product with the original TT still in place is 251 bp
• size of TT that should be removed by GGA is 107 bp