Learn About Phage Display

WE LOVE PHAGE DISPLAY

Phage display is a powerful molecular biology technique that enables the identification of peptides, proteins, and antibodies that bind to specific targets with high affinity and selectivity. First developed by George Smith at the University of Missouri — work that earned him the 2018 Nobel Prize in Chemistry — phage display has become a cornerstone of modern drug discovery.

The technology works by displaying peptide or protein sequences on the surface of bacteriophage particles, creating libraries of billions of unique variants. These libraries can then be screened against virtually any target through a process called biopanning, rapidly identifying the sequences with the highest binding affinity.

How It Works

A gene encoding the peptide or protein of interest is fused to a bacteriophage coat protein gene. When the phage replicates, it displays the encoded peptide on its surface. By incubating a diverse library of phage with an immobilized target, washing away non-binders, and eluting specific binders, researchers can enrich for high-affinity sequences over multiple rounds of selection.

Applications

Phage display is used across a wide range of applications including therapeutic peptide and antibody discovery, target validation, epitope mapping, protein engineering, and the development of diagnostic reagents.