Entrez Summary: This gene encodes a sodium and potassium/ proton antiporter that is a member of the solute carrier family 9 protein family. The encoded protein is primarily localized to the trans-Golgi network and is involved in maintaining pH homeostasis in organelles along the secretory and endocytic pathways. This protein may enhance cell growth of certain breast tumors. This gene is part of a gene cluster on chromosome Xp11.23. A pseudogene of this gene is found on chromosome 12. Alternate splicing results in multiple transcript variants. [provided by RefSeq, Mar 2012].
UniProt Summary: Mediates electroneutral exchange of protons for Na(+) and K(+) across endomembranes. May contribute to Golgi volume and cation homeostasis. {ECO:0000269|PubMed:11279194}.
Pfam DomainsGO Terms
Pfam Domains
Na H Exchanger
GO Terms
potassium:proton antiporter activity
sodium:proton antiporter activity
sodium ion import across plasma membrane
inorganic ion import across plasma membrane
inorganic cation import across plasma membrane
recycling endosome membrane
regulation of intracellular pH
sodium ion transmembrane transport
regulation of cellular pH
import across plasma membrane
regulation of pH
cellular monovalent inorganic cation homeostasis
recycling endosome
monovalent inorganic cation homeostasis
proton transmembrane transport
sodium ion transport
potassium ion transmembrane transport
potassium ion transport
trans-Golgi network
anion transmembrane transport
monovalent inorganic cation transport
inorganic cation transmembrane transport
anion transport
cation transmembrane transport
Golgi membrane
cellular cation homeostasis
metal ion transport
cellular ion homeostasis
inorganic ion transmembrane transport
import into cell
intracellular membrane-bounded organelle
cation homeostasis
inorganic ion homeostasis
cellular chemical homeostasis
ion homeostasis
cation transport
protein homodimerization activity
cellular homeostasis
ion transmembrane transport
chemical homeostasis
transmembrane transport
ion transport
homeostatic process
CRISPR Data
Compound HitMost Correlated Genes in ChemogenomicsTissues where Essential in the Avana Dataset (DepMap 20Q1)