Transport of aldohexuronates such as D-glucuronate and D-galacturonate (PubMed:783117, PubMed:6343797). Under anaerobic conditions, can play a critical role as a D-glucose transporter in the absence of sugar-PTS system (PubMed:32038601). aldehydo-D-glucuronate(in) + H(+)(in) = aldehydo-D-glucuronate(out) + H(+)(out) aldehydo-D-galacturonate(out) + H(+)(out) = aldehydo-D-galacturonate(in) + H(+)(in) D-glucose(out) + H(+)(out) = D-glucose(in) + H(+)(in) Negatively controlled by ExuR (PubMed:783117). Repressed by H-NS (PubMed:19429622). Mutant is unable to grow on either glucuronate or galacturonate, but is able to grow on fructuronate or tagaturonate. Belongs to the major facilitator superfamily. Phthalate permease family. Extended N-terminus. Extended N-terminus. Extended N-terminus.