| 1GMC: reference: X-ray crystal structure of gamma-chymotrypsin in hexane., Yennawar NH, Yennawar HP, Farber GK, Biochemistry 1994 Jun 14;33(23):7326-36. PMID: 8003497 |
This OCA 
Structure page
uses Jmol,
developed by the Jmol Development Team
(documentation).