>sp|P20924|FRDD_PROVU Fumarate reductase subunit D OS=Proteus vulgaris GN=frdD MNQNQLPKRSDEPIFWGLFGAGGMWSAIVSPAIIILLGILIPMGIAPEAFTYDRIMAFSQ GFIGRIFLLLMIILPVWCALHRIHHTLHDFKVHVPASNWVFYGAAAIISVIAIIGVFTL