1GCI:
reference: The 0.78 A structure of a serine protease: Bacillus lentus subtilisin., Kuhn P, Knapp M, Soltis SM, Ganshaw G, Thoene M, Bott R, Biochemistry 1998 Sep 29;37(39):13446-52. PMID: 9753430

This OCA Structure page
uses Jmol, developed by the Jmol Development Team (documentation).