Sequence alignment between 4xk8(E) and UniProt seq E1C9K6 (E1C9K6_PEA):

E1C9K6 (E1C9K6_PEA): Photosystem I reaction center subunit IV from Pisum sativum
                 10        20        30        40        50        60    
         ---------+---------+---------+---------+---------+---------+----
UniProt: IGPKRGAKVKILRKESYWYKGTGSVVAVDQDPNTRYPVVVRFNKVNYANVSTNNYALDEIVEVE
         ............................................................X...
PDB seq: -GPKRGAKVKILRKESYWYKGTGSVVAVDQDPNTRYPVVVRFNKVNYANVSTNNYALDEIQEVE
          --------+---------+---------+---------+---------+---------+----
                 10        20        30        40        50        60