1CHC:
reference: Structure of the C3HC4 domain by 1H-nuclear magnetic resonance spectroscopy. A new structural class of zinc-finger., Barlow PN, Luisi B, Milner A, Elliott M, Everett R, J Mol Biol 1994 Mar 25;237(2):201-11. PMID: 8126734

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