| 3O44: reference: Crystal structure of the Vibrio cholerae cytolysin heptamer reveals common features among disparate pore-forming toxins., De S, Olson R, Proc Natl Acad Sci U S A. 2011 May 3;108(18):7385-90. Epub 2011 Apr 18. PMID: 21502531 |
This OCA 
Structure page
uses Jmol,
developed by the Jmol Development Team
(documentation).