InsTAclone PCR Cloning Kit is a TA system for direct one-step cloning of PCR products with 3'-dA overhangs generated by Taq DNA polymerase and other thermostable DNA polymerases, which lack proofreading activity. The high quality ready-to-use TA cloning vector pTZ57R/T was prepared by linearizing the pTZ57R plasmid with Eco32I and tailing with single ddT. The 3'-ddT overhangs at both ends of the cloning site prevent recircularization of the vector during ligation, resulting in high cloning yields and low background.
To increase the speed, convenience, and efficiency of cloning experiment, the kit has been combined with the unique TransformAid Bacterial Transformation Kit -a set of solutions for preparation of chemically competent E. coli cells.
- Fast cloning - approximately one hour from PCR completion to cell plating
- High efficiency - more than 90% of the recombinant clones contain the target DNA
- One-step procedure - additional modifications of PCR fragment are not required
- Compatibility - compatible with Taq, Tth, Tfl, and other non-proofreading DNA polymerases as well as with Long PCR Enzyme Mix
- Convenience of pTZ57R/T cloning vector:
- Ready-to-use: linearized with Eco32I and 3'-ddT tailed
- MCS designed for easy mapping and manipulation of the cloned insert
- Blue/white screening
- M13/pUC primer sites for sequencing or colony PCR screening
- T7 promoter for in vitro transcription of the insert
According to the protocol, ligation and preparation of competent cells is performed in parallel. Therefore, it takes only one hour from the completion of PCR to cell plating. Our transformation protocol is often faster than the transformation of commercially available competent cells. The DNA insert can be readily excised from the versatile polylinker of pTZ57R/T, sequenced using standard M13/pUC primers or in vitro transcribed with T7 RNA polymerase.
|Sequencing of cloned insert; in vitro transcription of insert DNA; TA cloning.|