bira tag BioID BirA* biotin ligase tag bira biotin ligase tag MI:2403 bira tag E. coli BirA* biotin ligase tag used in BioID experiments. This generally refers to a promiscuous mutant version of the biotin ligase with an R118H mutation. BirA* tag pporras 2021-03-22T14:27:04Z PSI-MI biotin ligase tag