Promega pGEM-T

Promega's pGEM®-T Vector System is a high-efficiency tool designed for the cloning of PCR products, particularly those generated by thermostable polymerases that add a single deoxyadenosine to the 3′-ends of amplified fragments. This vector system facilitates the rapid and reliable insertion of PCR products into plasmids, streamlining molecular cloning workflows.

Key features include:

• Single 3′-T Overhangs: Enhance ligation efficiency by preventing vector recircularisation and providing compatible overhangs for PCR products with A overhangs.

• Blue/White Screening: T7 and SP6 RNA polymerase promoters flank a multiple cloning region within the α-peptide coding region for β-galactosidase, allowing direct identification of recombinant clones through colour screening on indicator plates.

• Rapid Ligation: The provided 2X Rapid Ligation Buffer enables ligation reactions to be completed in just one hour at room temperature, significantly reducing processing time.

• Versatile Insert Release: The multiple cloning site is flanked by recognition sites for the restriction enzyme BstZI, allowing release of the insert by a single-enzyme digestion. Alternatively, a double digestion may be used to release the insert from the vector.

• Single-Stranded DNA Preparation: The f1 origin of replication allows for the preparation of single-stranded DNA, facilitating applications such as mutagenesis and sequencing.

This vector system is widely utilised in various scientific fields, including:

• Molecular Biology: For gene cloning and expression studies.

• Genetic Engineering: In the development of recombinant DNA technologies.

• Biotechnology: For the production of genetically modified organisms and proteins.

Commonly employed in:

• University Laboratories: For academic research and teaching purposes.

• Biomedical Research Centres: In the study of gene function and disease mechanisms.

• Clinical Laboratories: For diagnostic and therapeutic research applications.

First introduced in the 1990s, the pGEM®-T Vector System remains a relevant and widely used tool in molecular cloning due to its efficiency and ease of use.