Post Translational Modifications | Phosphorylation of Ser-1026 by PKA increases the binding of CA2 and changes the Na(+):HCO3(-) stoichiometry of the transporter from 3:1 to 2:1. Phosphorylated in presence of STK39 and dephosphorylated in presence of PP1 phosphatase.phosphorylation seems to inhibit SLC4A4 activity. N-glycosylated. May not be necessary for the transporter basic functions. |
Function | Electrogenic sodium/bicarbonate cotransporter with a Na(+):HCO3(-) stoichiometry varying from 1:2 to 1:3. May regulate bicarbonate influx/efflux at the basolateral membrane of cells and regulate intracellular pH. |
Protein Name | Electrogenic Sodium Bicarbonate Cotransporter 1Sodium Bicarbonate CotransporterNa(+/Hco3(- CotransporterSolute Carrier Family 4 Member 4Knbc1 |
Database Links | Reactome: R-HSA-425381Reactome: R-HSA-5619054 |
Cellular Localisation | Basolateral Cell MembraneMulti-Pass Membrane ProteinCell Membrane |
Alternative Protein Names | Electrogenic Sodium Bicarbonate Cotransporter 1 proteinSodium Bicarbonate Cotransporter proteinNa(+/Hco3(- Cotransporter proteinSolute Carrier Family 4 Member 4 proteinKnbc1 proteinSLC4A4 proteinNBC proteinNBC1 proteinNBCE1 protein |
Information sourced from Uniprot.org