filamentous phage display
p3 filamentous phage display
MI:0899
low valency display
PSI-MI
pIII is one of the minor coat proteins that decorates in five copies the emerging tip of filamentous phage. Similarly to pVIII pIII also tolerates peptide insertions at the amino-terminus. The sequences to be displayed can either be encoded in the phage copy of the coat gene or in an extra pIII gene copy carried on a phagemid. In the first case 5 copies o the hybrid proteins are displayed while in the latter only a few capsid display one copy and the majority display none. Because of the low copy number pIII display is often referred to as low valency display.
p3 filamentous phage