A single mutation in the activation site of bovine trypsinogen enhances its accumulation in the fermentation broth of the yeast pichia pastoris - Baroche, Laurence.; Desplancq, Dominique.; Ebtinger, Marc.; Hanquier, Jose.; Hershberger, Charles L.; Lefevre, Jean-Francois.; Pattus, Franc.; Sorlet, Yannick.; Vertes, Alain A.