Threonine-509 Is a Determinant of Apparent Affinity for Both Substrate and Cations in the Human Na+/Dicarboxylate Cotransporter †
Weerachayaphorn J, Pajor AM. Threonine-509 Is a Determinant of Apparent Affinity for Both Substrate and Cations in the Human Na+/Dicarboxylate Cotransporter †. Biochemistry 2007, 47: 1087-1093. PMID: 18161988, PMCID: PMC2570185, DOI: 10.1021/bi701417h.Peer-Reviewed Original ResearchMeSH KeywordsAmino Acid SequenceAmino Acid SubstitutionAnimalsChlorocebus aethiopsCitric AcidCOS CellsDicarboxylic Acid TransportersGene ExpressionHumansKineticsMolecular Sequence DataMutationOrganic Anion Transporters, Sodium-DependentRabbitsRecombinant ProteinsSequence Homology, Amino AcidSodiumSubstrate SpecificitySuccinic AcidSymportersThreonineConceptsTransmembrane helix 7Functional differencesApparent affinityApparent sodium affinitySubstrate Binding SiteAmino acid differencesCitric acid cycleCitrate affinityHelix 7Substrate specificityPosition -509Rabbit sequenceIndividual residuesAcid cycleAcid differencesSimilar apparent affinitiesLoop regionIntermediate KmAmino acidsBinding sitesMutantsNaDC1SerineThreonineExhibit differences