>sp|A6VQC0|FRDD_ACTSZ Fumarate reductase subunit D OS=Actinobacillus succinogenes GN=frdD MINTNPKRSNEPPVWLLFSAGGMISALAFPVLILILGILLPLGIISPDGIIAFAHHWFGK LVILVLTIFPAWAGLHRIHHGMHDIKVHVPSGGLIFYGLAVLYTVVAIWGVASI