title: Serratia proteamaculans
text: # Serratia proteamaculans
  
  Serratia proteamaculans is a Gram-negative, facultatively anaerobic, rod-shaped bacterium. S. proteamaculans HY-3 isolated from the digestive tract of a spider produces an extracellular protease named arazyme, with an estimated molecular mass of 51.5 kDa.
  
  