NCBI Accession #
NP_567354.1
NCBI GenBank Nucleotide #
NM_117099.6
NCBI Official Full Name
high-affinity K+ transporter 1
NCBI Official Symbol
HKT1
NCBI Official Synonym Symbols
ATHKT1; high-affinity K+ transporter 1; HKT1;1; T9A4.5
NCBI Protein Information
high-affinity K+ transporter 1
NCBI Summary
encodes a sodium transporter (HKT1) expressed in xylem parenchyma cells. Mutants over-accumulate sodium in shoot tissue and have increased sodium in the xylem sap and reduced sodium in phloem sap and roots.
UniProt Synonym Gene Names
AtHKT1
UniProt Protein Name
Sodium transporter HKT1
UniProt Primary Accession #
Q84TI7
UniProt Secondary Accession #
O82614; Q68KI5; Q9M570; Q9SV90
UniProt Related Accession #
Q84TI7
UniProt Comments
Sodium transporter protein, which plays a central role in plant tolerance to salt. Upon prolongated exposure to high concentrations, Na+ translocates from the roots to the transpiring leaves where it can increase to toxic level. Involved in Na+ recirculation from shoots to roots, probably by mediating Na+ loading into the phloem sap in shoots and unloading in roots, thereby removing large amounts of Na+ from the shoot. Does not transport K+ but regulates K+ nutrient status via its ability to facilitate Na+ homeostasis. Probably not involved in root uptake of Na+.