Abstract The Rnf complex is the primary respiratory enzyme of several anaerobic prokaryotes that transfers electrons from ferredoxin to NAD+ and pumps ions (Na+ or H+) across a membrane. powering ATP synthesis. Rnf is widespread in primordial organisms and the evolutionary predecessor of the Na+-pumping NADH-quinone oxidoreductase (Nqr). By running in reverse. https://www.countryscenesaddleryandpetsuppliers.shop/product-category/stands/