Optimization of bacteriocin release protein (BRP)-mediated protein release by escherichia coli : Random mutagenesis of the pCloDF13-derived BRP gene to uncouple lethality and quasi-lysis from protein release - Koningstein, G.; Luirink, Joen.; Oudega, Bauke.; Ten Hagen, C. M.; Van der Wal, Fimme J.