1.8.98.1	aquacobalamin	stimulates the activity of the purified H2: heterodisulfide oxidoreductase complex	655398	
1.8.98.1	Iron-sulfur cluster	the cluster is fixed by cysteines of two cysteine-rich CCG domain sequence motifs (CX31-39CCX35-36CXXC) of subunit HdrB of the Methanothermobacter marburgensis HdrABC complex. An Advanced electron paramagnetic resonance on the catalytic iron-sulfur cluster bound to the CCG domain is performed	725558