About Pfenex

Pfenex Inc. is a clinical-stage biotechnology company engaged in the development of difficult to manufacture and high-value proteins, initially focused on biosimilar therapeutics. Utilizing the company’s core technology, Pfenex Expression Technology for recombinant protein expression, Pfenex is able to rapidly develop and produce high quality therapeutics. In addition, Pfenex also produces and markets research and reagent proteins for the scientific and drug development community through its Reagent Proteins division.


Pfenex Expression Technology combines an extensive toolbox of expression components with a robotically enabled high-throughput parallel strain screening technology, delivering unprecedented speed and success in identifying protein production strains expressing high titers of soluble, active protein.