title: Crystal structure of a bacterial protein proteinase inhibitor (Streptomyces subtilisin inhibitor) at 2.6 A resolution.
mesh_terms: D001426:Bacterial Proteins; D001665:Binding Sites; D006860:Hydrogen Bonding; D008958:Models, Molecular; D011487:Protein Conformation; D013302:Streptomyces / Q000201:enzymology*; D013381:Subtilisins / Q000037:antagonists & inhibitors*; D014961:X-Ray Diffraction
chemical_list: D001426:Bacterial Proteins; D013381:Subtilisins