This family of proteins are functionally uncharacterised. The C-terminus contains a cluster of cysteines that are similar to the iron-sulfur cluster found at the N-terminus of Pfam:PF04055.

1: Reconstruction and regulation of the central catabolic pathway in the thermophilic propionate-oxidizing syntroph Pelotomaculum thermopropionicum. Kosaka T, Uchiyama T, Ishii S, Enoki M, Imachi H, Kamagata Y, Ohashi A, Harada H, Ikenaga H, Watanabe K; J Bacteriol. 2006;188:202-210. PMID:16352836