1JDN:
reference: Allosteric activation of a spring-loaded natriuretic peptide receptor dimer by hormone., He Xl, Chow Dc, Martick MM, Garcia KC, Science 2001 Aug 31;293(5535):1657-62. PMID: 11533490

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