Involved in actively transporting phosphate into cells via Na(+) cotransport in the renal brush border membrane ( , ). The cotransport has a Na(+):Pi stoichiometry of 3:1 and is electrogenic (By similarity).
Subcellular locations: Apical cell membrane, Cell membrane
Localized at the brush border membranes of the proximal tubules. Internalized from the cell surface upon PTH stimulation.
Kidney and lung.