Enhancing bacterial fitness and recombinant enzyme yield by engineering the quality control protease HtrA of Bacillus subtilis oleh Ayşegül Öktem, David Núñez-Nepomuceno, Borja Ferrero-Bordera, Jonathan Walgraeve, Michael Seefried, Manuela Gesell Salazar, Leif Steil, Stephan Michalik, Sandra Maaß, Dörte Becher, Ulrike Mäder, Uwe Völker, Jan Maarten van Dijl