What is a promiscuous biotin ligase fusion protein? Short fast 1 minute answer!

Bacterial Expression Systems Biotinylated Fusion Protein Experimental Porotocols in Biotechnology Protein Protein Expression Systems

A promiscuous biotin ligase fusion protein identifies proximal and interacting proteins in mammalian cells Kyle J. Roux,1,2Dae In Kim,1,2Manfred Raida,3and Brian Burke4