sp|D9PU00|TFRA_METTM Fumarate reductase (CoM/CoB) subunit A OS=Methanothermobacter marburgensis (strain ATCC BAA-927 / DSM 2133 / JCM 14651 / NBRC 100331 / OCM 82 / Marburg) OX=79929 GN=tfrA PE=1 SV=1