VB UltraStable™ Chemically Competent Cells

VB UltraStable™ chemically competent cells are designed to achieve high transformation efficiency (>1x10⁹cfu/ug) and to propagate DNA plasmids with unstable elements such as repeated sequences. Whether you are doing routine cloning or high-throughput cloning, our host cells offer you the comprehensive technical solutions to meet a wide range of cloning needs.

Highlights
▪ Lacks the ability to undergo homologous recombination due to the mutations introduced in the recA gene.
▪ Suitable for cloning and hosting of lentiviral, retroviral vectors and vectors with repeated sequences and unstable fragments.
▪ High efficiency for Gateway Cloning, because the cells lack the functional ccdAB operon.
▪ Can produce high quality plasmid DNA due to the endA mutation (the plasmids won't be digested by endonuclease).
▪ T1 phage resistant due to the fhuA mutation.
▪ Can be used for blue/white screening because it expresses the omega-fragment of the LacZ gene.

Please contact us at for specific academic pricing.