Entrez Summary: Polyspecific organic cation transporters in the liver, kidney, intestine, and other organs are critical for elimination of many endogenous small organic cations as well as a wide array of drugs and environmental toxins. The encoded protein is a plasma integral membrane protein which functions both as an organic cation transporter and as a sodium-dependent high affinity carnitine transporter. The encoded protein is involved in the active cellular uptake of carnitine. Mutations in this gene are the cause of systemic primary carnitine deficiency (CDSP), an autosomal recessive disorder manifested early in life by hypoketotic hypoglycemia and acute metabolic decompensation, and later in life by skeletal myopathy or cardiomyopathy. Alternative splicing of this gene results in multiple transcript variants. [provided by RefSeq, Apr 2015].
UniProt Summary: Sodium-ion dependent, high affinity carnitine transporter. Involved in the active cellular uptake of carnitine. Transports one sodium ion with one molecule of carnitine. Also transports organic cations such as tetraethylammonium (TEA) without the involvement of sodium. Also relative uptake activity ratio of carnitine to TEA is 11.3. {ECO:0000269|PubMed:10454528}.
Pfam DomainsGO Terms
Pfam Domains
MFS 1
Sugar tr
GO Terms
quorum sensing involved in interaction with host
quorum sensing
sodium-dependent organic cation transport
positive regulation of intestinal epithelial structure maintenance
interspecies quorum sensing
regulation of intestinal epithelial structure maintenance
carnitine transmembrane transporter activity
carnitine transmembrane transport
quaternary ammonium group transmembrane transporter activity
carnitine transport
amino-acid betaine transport
xenobiotic transmembrane transporter activity
positive regulation of digestive system process
quaternary ammonium group transport
ammonium transmembrane transport
xenobiotic transport
multi-organism cellular process
modified amino acid transport
organic cation transport
regulation of digestive system process
symporter activity
ammonium transport
brush border membrane
PDZ domain binding
drug transport
sodium ion transport
interaction with host
apical plasma membrane
monovalent inorganic cation transport
regulation of system process
cation transmembrane transport
metal ion transport
symbiotic process
interspecies interaction between organisms
cation transport
ion transmembrane transport
response to drug
transmembrane transport
ion transport
ATP binding
positive regulation of multicellular organismal process
nitrogen compound transport
CRISPR Data
Compound HitMost Correlated Genes in ChemogenomicsTissues where Essential in the Avana Dataset (DepMap 20Q1)
Compound Hit
No hits were found.
Most Correlated Genes in Chemogenomics
No correlation found to any other genes in chemogenomics.
Tissues where Essential in the Avana Dataset (DepMap 20Q1)
Global Fraction of Cell Lines Where Essential: 0/739