Figure 35.
Molecular action of NDCBE. Possible molecular mechanisms by which NDCBE could operate in an electroneutral mode to exchange Na+ and HCO3− equivalents for Cl−. Note that we have not considered any models that are based on CO32−/H+ cotransport. In the original characterization of NDCBE action, Cl− flux was estimated to be sixfold greater than Na+ flux.