Enables the transfer of a solute or solutes from one side of a membrane to the other according to the reaction: dicarboxylate(out) + Na+(out) = dicarboxylate(in) + Na+(in). In high-affinity transport the transporter is able to bind the solute even if it is only present at very low concentrations.
Synonyms:
broad_synonym:
high affinity sodium:dicarboxylate cotransporter activity
xref:
reactome:R-HSA-433101 "NaDC3 co-transports the dicarboxylic acid succinate and three sodium ion"