This subfamily belongs to the major facilitator family. Members include the oxalate/formate antiporter of Oxalobacter formigenes, where one substrate is decarboxylated in the cytosol into the other to consume a proton and drive an ion gradient. [Transport and binding proteins, Carbohydrates, organic alcohols, and acids]
Jiyao W et al.(2023). "The conserved domain database in 2023.",