syntrophobacter fumaroxidans syntrophobacter fumaroxidans syntrophobacter fumaroxidans is a species of syntrophic propionate-degrading sulfate-reducing bacterium. strain mpobt (= dsm 10017t) is the type strain. its genome has been fully sequenced. syntrophobacter fumaroxidans scientific classification domain: bacteria phylum: thermodesulfobacteriota class: syntrophobacteria order: syntrophobacterales family: syntrophobacteraceae genus: syntrophobacter species: s. fumaroxidansharmsen et al. 1998