1LFV:
reference: Structures of human oxy- and deoxyhaemoglobin at different levels of humidity: variability in the T state., Biswal BK, Vijayan M, Acta Crystallogr D Biol Crystallogr 2002 Jul;58(Pt 7):1155-61. PMID: 12077435

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