| 1BRC: reference: Relocating a negative charge in the binding pocket of trypsin., Perona JJ, Tsu CA, McGrath ME, Craik CS, Fletterick RJ, J Mol Biol 1993 Apr 5;230(3):934-49. PMID: 8478942 |
This OCA 
Structure page
uses Jmol,
developed by the Jmol Development Team
(documentation).