Sequence alignment between 3oee(I) and UniProt seq P21306 (ATP5E_YEAST):

P21306 (ATP5E_YEAST): ATP synthase subunit epsilon, mitochondrial from Saccharomyces cerevisiae (strain ATCC 204508 / S288c) 
                 10        20        30        40        50        60  
         ---------+---------+---------+---------+---------+---------+--
UniProt: MSAWRKAGISYAAYLNVAAQAIRSSLKTELQTASVLNRSQTDAFYTQYKNGTAASEPTPITK
         ........................XX........................XXX.........
PDB seq: --------ISYAAYLNVAAQAIRS--KTELQTASVLNRSQTDAFYTQYKN---ASEPTPITK
                 --+---------+---  ----+---------+---------   -------+-
                  10        20        30        40                  60