Sequence alignment between 3a0h(X) and UniProt seq D0VWR4 (PSBX_THEVL):

D0VWR4 (PSBX_THEVL): Photosystem II reaction center protein X (Fragment) from Thermostichus vulcanus 
                 10        20        30        40
         ---------+---------+---------+---------+
UniProt: TITPSLKGFFIGLLSGAVVLGLTFAVLIAISQIDKVQRSL
PDB seq: TITPSLKGFFIGLLSGAVVLGLTFAVLIAISQID------
         ---------+---------+---------+----      
                 20        30        40