Making Human Insulin in Bacteria

Industrial insulin production uses genetically engineered E. coli to make human insulin at large scale. The bacteria carry a proinsulin gene under a tryptophan promoter, and the gene includes a methionine linker so the product can be cut later. The cells also contain ampicillin resistance, which helps with selective growth d...

Production of pharmaceutical proteins includes insulin, one of the most widely produced recombinant pharmaceutical proteins. One common production method uses genetically engineered E. coli to express human proinsulin.

Insulin production begins by inoculating starter flasks with E. coli seed culture. After incubation, ...