Sequence alignment between 3uhd(A) and UniProt seq P02213 (GLB1_ANAIN):

P02213 (GLB1_ANAIN): Globin-1 from Anadara inaequivalvis
                 10        20        30        40        50        60        70        80        90       100       110       120       130       140      
         ---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+------
UniProt: PSVYDAAAQLTADVKKDLRDSWKVIGSDKKGNGVALMTTLFADNQETIGYFKRLGDVSQGMANDKLRGHSITLMYALQNFIDQLDNPDDLVCVVEKFAVNHITRKISAAEFGKINGPIKKVLASKNFGDKYANAWAKLVAVVQAAL
         ...................................................................................................X..............................................
PDB seq: -SVYDAAAQLTADVKKDLRDSWKVIGSDKKGNGVALMTTLFADNQETIGYFKRLGDVSQGMANDKLRGHSITLMYALQNFIDQLDNPDDLVCVVEKFAVAHITRKISAAEFGKINGPIKKVLASKNFGDKYANAWAKLVAVVQAAL
          --------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+------
                 10        20        30        40        50        60        70        80        90       100       110       120       130       140