PSBR_HORVU 138 Associated with the oxygen-evolving complex of photosystem II. MSACVMASLALKPSSSPLLQRSKLGGVRPSARPSLVIVAKKAKKVQTAQPYGPGGGVAFKEGVDASGRVAKGKGVYQFADKYGANVDGYSPIYTPEEWSPSGDVYVGGKTGLFLWAVTLAGILLGGALLVYSTSALAS Photosystem II 10 kDa polypeptide, chloroplastic PSBR