Keywords: Hemoglobin F.png Fetal hemoglobin HbF formed by two alpha subunits top and two gamma subunits bottom The 4 heme groups are also displayed All chains ribbons are rainbow-colored from blue to red N- to C-termini Own - A rendering prepared by me using Jmol from 4MQJ at PDB doi 10 2210/pdb4mqj/pdb 2016-02-10 AngelHerraez Original upload log page en wikipedia Hemoglobin_F png 2004-04-12 15 39 Diberri 612×522× 25345 bytes Fetal hemoglobin transparent background My snapshot of rendered version from PDB file http //www snv jussieu fr/vie/telecharge/pdb/HbF-1FDH pdb 2004-04-12 15 01 Diberri 612×522× 36662 bytes Fetal hemoglobin white background My snapshot of rendered version from PDB file http //www snv jussieu fr/vie/telecharge/pdb/HbF-1FDH pdb Blood cells Iron compounds Metalloproteins |