1LFG:
reference: Structure of human diferric lactoferrin refined at 2.2 A resolution., Haridas M, Anderson BF, Baker EN, Acta Crystallogr D Biol Crystallogr. 1995 Sep 1;51(Pt 5):629-46. PMID: 15299793

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