Complex sentence: Promatrilysin (Pro-MMP7) is converted from latent form to active form by endoproteinases, and plasmin, which cleaves at the site recognizable to trypsin, is considered as the most possible physiological activator.
Split into simpler sentences: Promatrilysin (Pro-MMP7) is converted from the latent form to the active form by endoproteinases, and plasmin. Plasmin cleaves at the site recognizable to trypsin, is considered as the most possible physiological activator.