2KMS:
reference: The Central Portion of Factor H (Modules 10-15) Is Compact and Contains a Structurally Deviant CCP Module., Schmidt CQ, Herbert AP, Mertens HD, Guariento M, Soares DC, Uhrin D, Rowe AJ, Svergun DI, Barlow PN, J Mol Biol. 2009 Oct 14. PMID: 19835885

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