Bacterial Expression Vectors

Bacterial expression vectors, like cloning vectors, are used for horizontal gene transfer but are specifically optimized for gene expression in bacterial systems such as Escherichia coli. While cloning vectors are primarily designed for replication – generating a large number of copies of the same plasmid – bacterial expression vectors are engineered to enable efficient protein production in prokaryotic hosts.

In addition to the core elements of a cloning vector, bacterial expression vectors contain a strong prokaryotic promoter sequence (such as T7, lac, or tac promoters) that recruits the bacterial transcription machinery. This allows the host cell to transcribe an RNA template from the inserted gene. Many systems also include regulatory elements like operator sequences for inducible expression, ribosome binding sites (RBS), and transcription terminators to ensure efficient translation and control over protein production.

Choose at genomics-online from a variety of bacterial promoter systems depending on the gene of interest, the specific bacterial strain, and the desired expression level. Explore our high-quality products designed for reliable and high-yield protein expression in bacterial systems. For more detailed information, visit our resource site to learn more about the differences between cloning vectors and bacterial expression vectors. If you need assistance selecting the right system, our customer support team is available via live chat, email, or phone.