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OATP
Members of the Organic Anion Transporter (OAT) Family (organic-anion-transporting polypeptides, OATP) 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. The generalized transport reactions catalyzed by members of the OAT family are: Anion (in) → Anion (out) Anion1 (in) + Anion2 (out) → Anion1 (out) + Anion2 (in) Function Proteins of the OAT family catalyze the Na+-independent facilitated transport of fairly large amphipathic organic anions (and less frequently neutral or cationic drugs), such as bromosulfobromophthalein, prostaglandins, conjugated and unconjugated bile acids (taurocholate and cholate), steroid conjugates, thyroid hormones, anionic oligopeptides, drugs, toxins and other xenobiotics. One famil ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SLCO1B3
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. OATP1B3 is a 12-transmembrane domain influx transporter. Normally expressed in the liver, the transporter functions to uptake large, non-polar drugs and hormones from the portal vein. Clinical significance OATP1B3 has also been identified as a transporter aberrantly expressed in prostate cancer and implicated in prostate cancer progression. Increasing mRNA expression of OATP1B3 was also correlated to prostate cancer Gleason score. In addition, lower expression of OATP1B3 mRNA was also detected in testicular cancer. Substrates Small molecules that are transported by SLCO1B3 include: * Amanitin * Atrasentan * Bilirubin * Bosentan * BQ-123 * Bromsulphthalein (BSP) * CDCA-NBD * Cholate (CA) * Cholecystokinin octapeptide (CCK-8) * Dehydroepiandroserone-3-sulfate ( DHEAS) * Delt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SLCO1B1
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. See also * Solute carrier family 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 ... References Further reading * * * * * * * * * * * * * * * * * * Solute carrier family Thyroid hormone transporters {{membrane-protein-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SLCO2B1
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''. See also * Solute carrier family 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 ... References Further reading * * * * * * * * * Solute carrier family {{membrane-protein-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SLCO3A1
Solute carrier organic anion transporter family member 3A1 is a protein that in humans is encoded by the ''SLCO3A1'' gene In biology, the word gene has two meanings. The Mendelian gene is a basic unit of heredity. The molecular gene is a sequence of nucleotides in DNA that is transcribed to produce a functional RNA. There are two types of molecular genes: protei .... See also * References Further reading * * * * * * * * Solute carrier family {{membrane-protein-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SLCO1A2
Solute carrier organic anion transporter family member 1A2 is a protein that in humans is encoded by the ''SLCO1A2'' gene. This gene encodes a sodium-independent transporter which mediates cellular uptake of organic ions in the liver. Its substrates include bile acids, bromosulphophthalein, and some steroidal compounds. The protein is a member of the SLC21A family of solute carriers. Alternate splicing of this gene results in three transcript variants encoding two different isoforms. See also * Solute carrier family 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 ... References Further reading * * * * * * * * * * * Solute carrier family Thyroid hormone transporters {{membrane-protein-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SLCO2A1
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. This gene encodes a prostaglandin transporter that is a member of the 12-membrane-spanning organic anion-transporting polypeptide superfamily of transporters. The encoded protein may be involved in mediating the uptake and clearance of prostaglandins in numerous tissues. Clinical relevance Mutations in this gene have been shown to cause primary hypertrophic osteoarthropathy Hypertrophy is the increase in the volume of an organ or tissue due to the enlargement of its component Cell (biology), cells. It is distinguished from hyperplasia, in which the cells remain approximately the same size but increase in number. Al ..., specific form of chronic enteropathy. References Further reading * * * * * * * * * * External links * Solute carrier family {{gene-3-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Solute Carrier Family
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, TCDB database. Solutes that are transported by the various SLC group members are extremely diverse and include both charged and uncharged organic molecules as well as inorganic ions and the gas Ammonia transporter, ammonia. As is typical of integral membrane proteins, SLCs contain a number of hydrophobic transmembrane Alpha helix, alpha helices connected to each other by hydrophilic intra- and extra-cellular loops. Depending on the SLC, these transporters are functional as either monomers or obligate homo- or hetero-oligomers. Many SLC fam ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Major Facilitator Superfamily
The major facilitator superfamily (MFS) is a Protein superfamily, superfamily of membrane transport proteins that facilitate movement of small solutes across cell membranes in response to chemiosmosis, chemiosmotic gradients. Function The major facilitator superfamily (MFS) are membrane proteins which are expressed ubiquitously in all kingdoms of life for the import or export of target substrates. The MFS family was originally believed to function primarily in the uptake of sugars but subsequent studies revealed that drugs, metabolites, oligosaccharides, amino acids and oxyanions were all transported by MFS family members. These proteins energetically drive transport utilizing the electrochemical gradient of the target substrate (uniporter), or act as a cotransporter where transport is coupled to the movement of a second substrate. Fold The basic fold of the MFS transporter is built around 12, or in some cases, 14 transmembrane helix, transmembrane helices (TMH), with two 6- (o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SLCO4A1
Solute carrier organic anion transporter family member 4A1 is a protein that in humans is encoded by the ''SLCO4A1'' gene. See also * Solute carrier family 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 ... References Further reading * * * * * * * * Solute carrier family Thyroid hormone transporters {{membrane-protein-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hepatocytes
A hepatocyte is a cell of the main parenchymal tissue of the liver. Hepatocytes make up 80% of the liver's mass. These cells are involved in: * Protein synthesis * Protein storage * Transformation of carbohydrates * Synthesis of cholesterol, bile salts and phospholipids * Detoxification, modification, and excretion of exogenous and endogenous substances * Initiation of formation and secretion of bile Structure The typical hepatocyte is cubical with sides of 20-30 μm, (in comparison, a human hair has a diameter of 17 to 180 μm).The diameter of human hair ranges from 17 to 181 μm. The typical volume of a hepatocyte is 3.4 x 10−9 cm3. Smooth endoplasmic reticulum is abundant in hepatocytes, in contrast to most other cell types. Microanatomy Hepatocytes display an eosinophilic cytoplasm, reflecting numerous mitochondria, and basophilic stippling due to large amounts of rough endoplasmic reticulum and free ribosomes. Brown lipofuscin granules are also observed (with i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anopheles Gambiae
The ''Anopheles gambiae'' complex consists of at least seven morphologically indistinguishable species of mosquitoes in the genus ''Anopheles''. The complex was recognised in the 1960s and includes the most important vectors of malaria in sub-Saharan Africa, particularly of the most dangerous malaria parasite, ''Plasmodium falciparum''. It is one of the most efficient malaria vectors known. The ''An. gambiae'' mosquito additionally transmits ''Wuchereria bancrofti'' which causes lymphatic filariasis, a symptom of which is elephantiasis. Discovery and elements The ''Anopheles gambiae'' complex or ''Anopheles gambiae'' sensu lato was recognized as a species complex only in the 1960s. The ''A. gambiae'' complex consists of: * '' Anopheles arabiensis'' Patton, 1905 * '' Anopheles bwambae'' White, 1985 * '' Anopheles melas'' Theobald, 1903 * '' Anopheles merus'' Dönitz, 1902 * '' Anopheles quadriannulatus'' (Theobald, 1911) * ''Anopheles gambiae'' Giles, 1902 sensu stricto (s.s. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
