Sequence alignment between 8f4f(J) and UniProt seq P59087 (PSBJ_THEEB):

P59087 (PSBJ_THEEB): Photosystem II reaction center protein J from Thermosynechococcus vestitus (strain NIES-2133 / IAM M-273 / BP-1) 
                 10        20        30        40
         ---------+---------+---------+---------+
UniProt: MMSEGGRIPLWIVATVAGMGVIVIVGLFFYGAYAGLGSSL
PDB seq: ----GGRIPLWIVATVAGMGVIVIVGLFFYGAYAGLGSSL
             -----+---------+---------+---------+
                 10        20        30        40