2SCP:
reference: Structure of a sarcoplasmic calcium-binding protein from Nereis diversicolor refined at 2.0 A resolution., Vijay-Kumar S, Cook WJ, J Mol Biol 1992 Mar 20;224(2):413-26. PMID: 1560459

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