An organic cation transport protein mediates the transport of organic cations across the cell membrane. These proteins are members of the solute carrier family, subfamily 22. This family of proteins can also transport zwitterions and anions, though it is a different subfamily of solute carrier proteins than the organic anion transporters.
Abbreviation | Protein name | Location | Transported solute(s) | Associated disorder(s) |
---|---|---|---|---|
SLC22A1 | Solute carrier family 22 member 1 | Liver, brain (cerebellum) | ||
SLC22A2 | Solute carrier family 22 member 2 | Primarily in kidney, also in brain | ||
SLC22A3 | Solute carrier family 22 member 3 | Brain and kidney | Histamine, dopamine, serotonin, norepinephrine, MPP+ | |
SLC22A4 | Solute carrier family 22 member 4 | Sodium ion and ergothioneine | ||
SLC22A5 | Solute carrier family 22 member 5 | Primary carnitine deficiency | ||
SLC22A6 | Solute carrier family 22 member 6 | |||
SLC22A7 | Solute carrier family 22 member 7 | |||
SLC22A8 | Solute carrier family 22 member 8 | |||
SLC22A9 | Solute carrier family 22 member 9 | |||
SLC22A10 | Solute carrier family 22 member 10 | |||
SLC22A11 | Solute carrier family 22 member 11 | |||
SLC22A12 | Solute carrier family 22 member 12 | Kidney | Uric acid | Hyperuricemia and hypouricemia |
SLC22A13 | Solute carrier family 22 member 13 | |||
SLC22A14 | Solute carrier family 22 member 14 | |||
SLC22A15 | Solute carrier family 22 member 15 | |||
SLC22A16 | Solute carrier family 22 member 16 | |||
SLC22A17 | Solute carrier family 22 member 17 | |||
SLC22A18 | Solute carrier family 22 member 18 | Beckwith-Wiedemann syndrome, Wilms tumor, rhabdomyosarcoma, adrenocortical carcinoma, and lung, ovarian, and breast cancer | ||
SLC22A19 | Solute carrier family 22 member 19 | |||
SLC22A20 | Solute carrier family 22 member 20 | |||
The solute carrier (SLC) group of membrane transport proteins include over 400 members organized into 66 families. Most members of the SLC group are located in the cell membrane. The SLC gene nomenclature system was originally proposed by the HUGO Gene Nomenclature Committee (HGNC) and is the basis for the official HGNC names of the genes that encode these transporters. A more general transmembrane transporter classification can be found in TCDB database.
A transport protein is a protein that serves the function of moving other materials within an organism. Transport proteins are vital to the growth and life of all living things. There are several different kinds of transport proteins.
Solute carrier family 22, member 4, also known as SLC22A4, is a human gene; the encoded protein is known as the ergothioneine transporter.
Solute carrier organic anion transporter family member 1B1 is a protein that in humans is encoded by the SLCO1B1 gene. Pharmacogenomic research indicates that genetic variations in this gene are associated with response to simvastatin. Clinical guidelines exist that can guide dosing of simvastatin based on SLCO1B1 gene variant using genotyping or whole exome sequencing.
Solute carrier family 22 member 11 is a protein that in humans is encoded by the SLC22A11 gene.
Solute carrier family 22, member 12, also known as SLC22A12 and URAT1, is a protein which in humans is encoded by the SLC22A12 gene.
Solute carrier organic anion transporter family member 1B3 (SLCO1B3) also known as organic anion-transporting polypeptide 1B3 (OATP1B3) is a protein that in humans is encoded by the SLCO1B3 gene.
Solute carrier organic anion transporter family member 1A2 is a protein that in humans is encoded by the SLCO1A2 gene.
Solute carrier organic anion transporter family member 2B1 also known as organic anion-transporting polypeptide 2B1 (OATP2B1) is a protein that in humans is encoded by the gene SLCO2B1.
Solute carrier organic anion transporter family member 4A1 is a protein that in humans is encoded by the SLCO4A1 gene.
Solute carrier family 22 member 7 is a protein that in humans is encoded by the gene SLC22A7.
Solute carrier family 22 member 9 is a protein that in humans is encoded by the SLC22A9 gene.
Solute carrier organic anion transporter family member 3A1 is a protein that in humans is encoded by the SLCO3A1 gene.
Solute carrier family 22 member 25 (SLC22A25), also known as organic anion transporter UST6, is a protein that in humans is encoded by the SLC22A25 gene.
Solute carrier organic anion transporter family member 2A1, also known as the prostaglandin transporter (PGT), is a protein that in humans is encoded by the SLCO2A1 gene.
Members of the organic solute transporter (OST) family have been characterized from a small bottom feeding species of fish called the little skate, Raja erinacea. Members have also been characterized from humans and mice. The OST family is a member of the larger group of secondary carriers, the APC superfamily.
The amino acid-polyamine-organocation (APC) superfamily is the second largest superfamily of secondary carrier proteins currently known, and it contains several Solute carriers. Originally, the APC superfamily consisted of subfamilies under the transporter classification number. This superfamily has since been expanded to include eighteen different families.
Solute carrier organic anion transporter family member 4C1 is a protein that in humans is encoded by the SLCO4C1 gene, which is located on chromosome 5q21. The OATP4C1 protein is expressed in the basolateral membrane of the nephron of the human kidney, where it is involved in the uptake of organic anions for elimination in the urine. The drug digoxin is an important substrate of this transporter.
Members of the Organo Anion Transporter (OAT) Family are membrane transport proteins or 'transporters' that mediate the transport of mainly organic anions across the cell membrane. Therefore, OATPs are present in the lipid bilayer of the cell membrane, acting as the cell's gatekeepers. OATPs belong to the Solute Carrier Family (SLC) and the major facilitator superfamily.
Solute carrier family 22 member 14 is a protein that in humans is encoded by the SLC22A14 gene.