Subtilisin

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"Subtilisin is a non-specific protease (a protein-digesting enzyme) initially obtained from Bacillus subtilis. Subtilisins belong to subtilases, a group of serine proteases that - like all serine proteases - initiate the nucleophilic attack on the peptide (amide) bond through a serine residue at the active site." --https://en.wikipedia.org/wiki/Subtilisin Of note is that the catalytic mechanism is identical to that of Trypsin. The STL file contains a representation of the protein in cartoon form with catalytic residues represented as spheres. Model based on the Protein Data Bank entry 1CSE: --http://www.pdb.org/pdb/explore/explore.do?pdbId=1cse Model created using VMD: http://www.ks.uiuc.edu/Research/vmd/