The methods eliminate the requirement of heat-shocking and related procedures. Instead, transformation can be performed by adding DNA to prepared Mix & Go cells and the mixture spread directly to a culture plate. Transformation efficiencies typically range from 108–109 transformants/µg of pUC19 DNA but can vary depending on the strain of E. coli. Most E. coli strains respond well to the Mix & Go preparation method and demonstrate fast transformation kinetics.The procedures are easy. Simply culture the E. coli strain of your choice in ZymoBroth™ medium (or SOB), wash and then resuspend the cells in the provided uniquely formulated buffers. The cells are now ready for transformation.