Function 
Subtilisin is a serine protease.  A 106 amino acid propeptide is cleaved from the N-terminus of pro-subtilisin to create the mature active enzym[1].  See detalis in User:Tommie Hata/Introduction to Protein Engineering-Subtilisin.
- Selenosubtilisin is a semisynthetic selenoenzyme produced by chemical modification of subtilisin[2].
 
- Savinase is a subtilisin produced from a lentil[3].
 
  Relevance 
Subtilisin is widely used commercially in detergents.
  Structural highlights 
The active site of Sub contains the . The  and the [4]. 
  3D Structures of Subtilisin 
Subtilisin 3D structures