A [auth 1A] ,IB [auth 4A] ,OA [auth 3A] ,U [auth 2A] PF00124 Photosynthetic reaction centre protein (Photo_RC) Photosynthetic reaction centre protein - Family C [auth 1C] ,KB [auth 4C] ,QA [auth 3C] ,W [auth 2C] PF00421 Photosystem II protein (PSII) Photosystem II protein - Family D [auth 1D] ,LB [auth 4D] ,RA [auth 3D] ,X [auth 2D] PF00124 Photosynthetic reaction centre protein (Photo_RC) Photosynthetic reaction centre protein - Family E [auth 1E] ,MB [auth 4E] ,SA [auth 3E] ,Y [auth 2E] PF00284 Lumenal portion of Cytochrome b559, alpha (gene psbE) subunit (Cytochrom_B559a) Lumenal portion of Cytochrome b559, alpha (gene psbE) subunit - Family AA [auth 2H] ,G [auth 1H] ,OB [auth 4H] ,UA [auth 3H] PF00737 Photosystem II 10 kDa phosphoprotein (PsbH) Photosystem II 10 kDa phosphoprotein - Family BA [auth 2I] ,H [auth 1I] ,PB [auth 4I] ,VA [auth 3I] PF02532 Photosystem II reaction centre I protein (PSII 4.8 kDa protein) (PsbI) Photosystem II reaction centre I protein (PSII 4.8 kDa protein) - Family FA [auth 2T] ,L [auth 1T] ,TB [auth 4T] ,ZA [auth 3T] PF01405 Photosystem II reaction centre T protein (PsbT) Photosystem II reaction centre T protein The exact function of this protein is unknown. It probably consists of a single transmembrane spanning helix. The Swiss:P37256 protein, appears to be (i) a novel photosystem II subunit and (ii) required for maintaining optimal photosystem II activity ... The exact function of this protein is unknown. It probably consists of a single transmembrane spanning helix. The Swiss:P37256 protein, appears to be (i) a novel photosystem II subunit and (ii) required for maintaining optimal photosystem II activity under adverse growth conditions [1]. Less Domain AB [auth 3X] ,GA [auth 2X] ,M [auth 1X] ,UB [auth 4X] PF06596 Photosystem II reaction centre X protein (PsbX) (PsbX) Photosystem II reaction centre X protein (PsbX) - Family CB [auth 3Z] ,IA [auth 2Z] ,O [auth 1Z] ,WB [auth 4Z] PF01737 YCF9 (Ycf9) YCF9 - Family DB [auth 32] ,JA [auth 22] ,P [auth 12] ,XB [auth 42] PF00421 Photosystem II protein (PSII) Photosystem II protein - Family AC [auth 43] ,GB [auth 33] ,MA [auth 23] ,S [auth 13] PF00421 Photosystem II protein (PSII) Photosystem II protein - Family BC [auth 44] ,HB [auth 34] ,NA [auth 24] ,T [auth 14] PF00421 Photosystem II protein (PSII) Photosystem II protein - Family