>sp|Q31D49|YCF3_PROM9 Photosystem I assembly protein Ycf3 OS=Prochlorococcus marinus GN=ycf3 MPSNQNRDNFIDKAFTVIAESIVKIMPIEEKEKKAYIYYRDGLAAQNNGDYSEALEYYKE SLLLEENKIDRGETLKNMAIIFMSNGEEDLSIETYEKALVENPKQPSCLKNIGLIYEKRG RNAEQNGDLDQRDIWFDKAAEVWTKAVKLYPGGYLDIENWLKNSGRSSIDMYL