Sequence alignment between 3a0b(L) and UniProt seq P12241 (PSBL_THEVL):

P12241 (PSBL_THEVL): Photosystem II reaction center protein L from Thermostichus vulcanus 
                 10        20        30       
         ---------+---------+---------+-------
UniProt: MEPNPNRQPVELNRTSLYLGLLLILVLALLFSSYFFN
PDB seq: MEPNPNRQPVELNRTSLYLGLLLILVLALLFSSYFFN
         ---------+---------+---------+-------
                 10        20        30