Sequence alignment between 3bz2(I) and UniProt seq Q8DJZ6 (PSBI_THEEB):

Q8DJZ6 (PSBI_THEEB): Photosystem II reaction center protein I from Thermosynechococcus elongatus (strain BP-1) 
                 10        20        30        
         ---------+---------+---------+--------
UniProt: METLKITVYIVVTFFVLLFVFGFLSGDPARNPKRKDLE
PDB seq: METLKITVYIVVTFFVLLFVFGFLSGDPARNPKRK---
         ---------+---------+---------+-----   
                 10        20        30