Sequence alignment between 1c7b(B) and UniProt seq P68871 (HBB_HUMAN):

P68871 (HBB_HUMAN): Hemoglobin subunit beta from Homo sapiens
                 10        20        30        40        50        60        70        80        90       100       110       120       130       140       
         ---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+-------
UniProt: MVHLTPEEKSAVTALWGKVNVDEVGGEALGRLLVVYPWTQRFFESFGDLSTPDAVMGNPKVKAHGKKVLGAFSDGLAHLDNLKGTFATLSELHCDKLHVDPENFRLLGNVLVCVLAHHFGKEFTPPVQAAYQKVVAGVANALAHKYH
         .X..........................................................................................................X......................................
PDB seq: -MHLTPEEKSAVTALWGKVNVDEVGGEALGRLLVVYPWTQRFFESFGDLSTPDAVMGNPKVKAHGKKVLGAFSDGLAHLDNLKGTFATLSELHCDKLHVDPENFRLLGKVLVCVLAHHFGKEFTPPVQAAYQKVVAGVANALAHKYH
          ---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+------
                  10        20        30        40        50        60        70        80        90       100       110       120       130       140