MOESM4 of Enabling low cost biopharmaceuticals: high level interferon alpha-2b production in Trichoderma reesei

Additional file 4: Figure S3. Protease activity measurements of purified fractions from culture supernatant sampled on day 4 and 5. The fractions from the pepstatin columns were measured at pH 4.5 and the SBTI fractions at pH 5.5. The protease activity on day 5 was higher than on day 4.