>4yuu_O2 mol:protein length:329 PHOTOSYSTEM II MANGANESE-STABILIZING POLYPEPTIDE, PSBO MLGFVSGTASLTKKRGGRSAQACGSAVTRLRLQAGEPQPVLAKGRLPSVTAFAAAVLLA AATHSAVLEPVQALTAQDVRQLSYEQVKGTGLANRCPEVVSSKGKISLDKTKKYKVVDL CLEPKQFLVEEEVGRRRGESKREFVDTKLMTRATYTLANIEGELVNENGTWKFIEKDGM DYAATTVQIPGGERVPFLFSIKKLVASLNNADDGISTSTELGGEFKVPSYRTGMFLDPK GRGMANGYDMAVALPALEADGAVGQEVLRKENDKVFQETSGRIELAVNKVDPTSNEIGG VFVSEQLSDTDMGAKEPKKLLLKGVFYARILPSD