Reliable prokaryotic systems to fit every expression scale

Producing large quantities of protein quickly and economically often requires using a bacterial host organism. We offer a variety of systems for the expression of recombinant proteins in Escherichia coli (E. coli). 

Protein expression vector guide

Featured bacterial protein expression categories

Ideal for nontoxic, recombinant protein expression in E. coli—pRSET and Gateway® pDEST™ vectors

Includes Champion™ pET, our strongest promoter, to help you achieve maximum protein production

Tightly controlled expression of toxic proteins and optimized protein solubility—pBAD

Comprehensive selection of reliable and efficient BL21 strains—One Shot® E. coli

Bacterial culture products, growth media, and reagents

NEW   Protein Expression Support Center
Find tips, troubleshooting help, and resources for your protein expression applications.