| 1STA: reference: Accommodation of insertion mutations on the surface and in the interior of staphylococcal nuclease., Keefe LJ, Quirk S, Gittis A, Sondek J, Lattman EE, Protein Sci 1994 Mar;3(3):391-401. PMID: 8019410 |
This OCA 
Structure page
uses Jmol,
developed by the Jmol Development Team
(documentation).