>tr|Q9R638|Q9R638_MEGGA Cytochrome C3=26 kDa subunit of A dimeric class III C-type cytochrome OS=Megalodesulfovibrio gigas LDVPCKVVITAPEGEDPHPRFGKVEMSHAKHRNVSCVSCHHMFDGCGDFQKCADCHIDRD DRSYERGFYKAWHSESEISCRGCHKAMKAKNEQTGPIGCLQGCHEAAQK