Fig S7. Trimmed alignment of DsrC/TsuE/AspA amino acid sequences.

DsrC sequences which contain both Cys_A and Cys_B in residues the C-terminal were marked in green, tRNA 2-thiouridine synthesizing protein (TusE) that contain only Cys_A residue were marked in green, Regulatory sulfur-related protein (RspA) that contain Cys_B residue were marked I yellow and Ca. Methanomixophus were marked in red.