Target-Assisted Iterative Screening Reveals Novel Interactors for PSD95, Nedd4, Src, Abl and Crk proteins

Abstract
A new in vitro screening method has been developed and applied to commercial phage-dis- played cDNA library to search for novel protein-protein interactions. PDZ, WW and SH3 domains from PSD95, Nedd4, Src, Abl and Crk proteins were used as targets. 12 novel putative and 2 previously reported interactions were identified in test screens. The novel screening format, dubbed TAIS (target-assisted iterative screening), is discussed as an alternative platform to existing technologies for pair-wise characterization of protein-protein interactions.