Characterization of SNP1, a Cell Wall-Degrading Trypsin, Produced During Infection by Stagonospora nodorum
Stagonospora (= Septoria) nodorum when grown in liquid culture with wheat cell walls as the sole carbon and nitrogen source secretes numerous extracellular depoly-merases, including a rapidly produced, alkaline, trypsin-like protease (SNP1).The enzyme was purified 417-fold by cation exchange chromatography and has a molecular mass of 25 kDa on sodi