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A serine protease from Bothropsatrox (Peruvian specimen’s venom) was isolated in two chromatographic steps in LC molecular exclusion and reverse phase-HPLC. This protein was denominated Ba III-4 (33,080.265 Da determinated by MALDI-TOF mass spectrometry) and showed pI of 5.06, Km 0.2 × 10−1 M and the Vmáx 4.1 × 10−1 nmoles p-NA/lt/min on the synthetic substrate BapNA. Ba III-4 also showed ability...
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