major facilitator superfamily (MFS) transporter facilitates the transport across cytoplasmic or internal membranes of one or more from a variety of substrates including ions, sugar phosphates, drugs, neurotransmitters, nucleosides, amino acids, and peptides
Major Facilitator Superfamily; The Major Facilitator Superfamily (MFS) is a large and diverse ...
133-528
1.37e-165
Major Facilitator Superfamily; The Major Facilitator Superfamily (MFS) is a large and diverse group of secondary transporters that includes uniporters, symporters, and antiporters. MFS proteins facilitate the transport across cytoplasmic or internal membranes of a variety of substrates including ions, sugar phosphates, drugs, neurotransmitters, nucleosides, amino acids, and peptides. They do so using the electrochemical potential of the transported substrates. Uniporters transport a single substrate, while symporters and antiporters transport two substrates in the same or in opposite directions, respectively, across membranes. MFS proteins are typically 400 to 600 amino acids in length, and the majority contain 12 transmembrane alpha helices (TMs) connected by hydrophilic loops. The N- and C-terminal halves of these proteins display weak similarity and may be the result of a gene duplication/fusion event. Based on kinetic studies and the structures of a few bacterial superfamily members, GlpT (glycerol-3-phosphate transporter), LacY (lactose permease), and EmrD (multidrug transporter), MFS proteins are thought to function through a single substrate binding site, alternating-access mechanism involving a rocker-switch type of movement. Bacterial members function primarily for nutrient uptake, and as drug-efflux pumps to confer antibiotic resistance. Some MFS proteins have medical significance in humans such as the glucose transporter Glut4, which is impaired in type II diabetes, and glucose-6-phosphate transporter (G6PT), which causes glycogen storage disease when mutated.
The actual alignment was detected with superfamily member cd17445:
Pssm-ID: 475125 [Multi-domain] Cd Length: 346 Bit Score: 475.03 E-value: 1.37e-165
Solute carrier family 22, member 17 of the Major Facilitator Superfamily; Solute carrier ...
133-528
1.37e-165
Solute carrier family 22, member 17 of the Major Facilitator Superfamily; Solute carrier family 22, member 17 (SLC22A17) is also called 24p3 receptor (24p3R), lipocalin-2 receptor, or neutrophil gelatinase-associated lipocalin (NGAL) receptor (NGALR). It functions as a cell surface receptor for lipocalin-2 (LCN2), also called NGAL or 24p3, which plays a key role in iron homeostasis and transport. LCN2 is a secreted protein of the lipocalin family that induces apoptosis in some types of cells and inhibits bacterial growth by sequestration of the iron-laden bacterial siderophore. Over-expressions of NGAL and NGALR have been found to be correlated with unfavorable clinicopathologic features and poor prognosis of patients with hepatocellular carcinoma. SLC22A17 is a member of the SLC22 family of organic cation/anion/zwitterion transporters, which includes organic cation transporters (OCTs/OCTNs) and organic anion transporters (OATs). It belongs to the Major Facilitator Superfamily (MFS) of membrane transport proteins, which are thought to function through a single substrate binding site, alternating-access mechanism involving a rocker-switch type of movement.
Pssm-ID: 341003 [Multi-domain] Cd Length: 346 Bit Score: 475.03 E-value: 1.37e-165
Solute carrier family 22, member 17 of the Major Facilitator Superfamily; Solute carrier ...
133-528
1.37e-165
Solute carrier family 22, member 17 of the Major Facilitator Superfamily; Solute carrier family 22, member 17 (SLC22A17) is also called 24p3 receptor (24p3R), lipocalin-2 receptor, or neutrophil gelatinase-associated lipocalin (NGAL) receptor (NGALR). It functions as a cell surface receptor for lipocalin-2 (LCN2), also called NGAL or 24p3, which plays a key role in iron homeostasis and transport. LCN2 is a secreted protein of the lipocalin family that induces apoptosis in some types of cells and inhibits bacterial growth by sequestration of the iron-laden bacterial siderophore. Over-expressions of NGAL and NGALR have been found to be correlated with unfavorable clinicopathologic features and poor prognosis of patients with hepatocellular carcinoma. SLC22A17 is a member of the SLC22 family of organic cation/anion/zwitterion transporters, which includes organic cation transporters (OCTs/OCTNs) and organic anion transporters (OATs). It belongs to the Major Facilitator Superfamily (MFS) of membrane transport proteins, which are thought to function through a single substrate binding site, alternating-access mechanism involving a rocker-switch type of movement.
Pssm-ID: 341003 [Multi-domain] Cd Length: 346 Bit Score: 475.03 E-value: 1.37e-165
Solute carrier family 22, member 31 of the Major Facilitator Superfamily; Solute carrier ...
137-528
4.28e-93
Solute carrier family 22, member 31 of the Major Facilitator Superfamily; Solute carrier family 22, member 31 (SLC22A31) is an uncharacterized member of the SLC22 family of transporters, which includes organic cation transporters (OCTs), organic zwitterion/cation transporters (OCTNs), and organic anion transporters (OATs). SLC22 transporters interact with a variety of compounds that include drugs of abuse, environmental toxins, opioid analgesics, antidepressant and anxiolytic agents, and neurotransmitters and their metabolites. SLC22A31 belongs to the Major Facilitator Superfamily (MFS) of membrane transport proteins, which are thought to function through a single substrate binding site, alternating-access mechanism involving a rocker-switch type of movement.
Pssm-ID: 341001 [Multi-domain] Cd Length: 343 Bit Score: 289.37 E-value: 4.28e-93
Solute carrier family 22, member 17 and similar proteins of the Major Facilitator Superfamily; ...
144-528
1.96e-80
Solute carrier family 22, member 17 and similar proteins of the Major Facilitator Superfamily; This group is composed of Solute carrier family 22, members 17, 23, and 31. They are members of the SLC22 family of organic cation/anion/zwitterion transporters, which includes organic cation transporters (OCTs/OCTNs) and organic anion transporters (OATs). SLC22A17 functions as a cell surface receptor for lipocalin-2 (LCN2), also called NGAL or 24p3, which plays a key role in iron homeostasis and transport. SLC22A23 and SLC22A31 are orphan members of the SLC22 family. SLC22 transporters interact with a variety of compounds that include drugs of abuse, environmental toxins, opioid analgesics, antidepressant and anxiolytic agents, and neurotransmitters and their metabolites. The SLC22A17-like group belongs to the Major Facilitator Superfamily (MFS) of membrane transport proteins, which are thought to function through a single substrate binding site, alternating-access mechanism involving a rocker-switch type of movement.
Pssm-ID: 340931 [Multi-domain] Cd Length: 348 Bit Score: 256.68 E-value: 1.96e-80
Solute carrier family 22, member 23 of the Major Facilitator Superfamily; Solute carrier ...
144-527
2.50e-56
Solute carrier family 22, member 23 of the Major Facilitator Superfamily; Solute carrier family 22, member 23 (SLC22A23) is an orphan member of the SLC22 family of organic cation/anion/zwitterion transporters, which includes organic cation transporters (OCTs/OCTNs) and organic anion transporters (OATs). It is abundantly expressed in brain and is also found in liver. Single-nucleotide polymorphisms in SLC22A23 are associated with inflammatory bowel disease (IBD) in a Canadian white population. SLC22 transporters interact with a variety of compounds that include drugs of abuse, environmental toxins, opioid analgesics, antidepressant and anxiolytic agents, and neurotransmitters and their metabolites. SLC22A23 belongs to the Major Facilitator Superfamily (MFS) of membrane transport proteins, which are thought to function through a single substrate binding site, alternating-access mechanism involving a rocker-switch type of movement.
Pssm-ID: 341002 [Multi-domain] Cd Length: 364 Bit Score: 193.91 E-value: 2.50e-56
Solute carrier 22 (SLC22) family of organic cation/anion/zwitterion transporters of the Major ...
144-528
3.56e-49
Solute carrier 22 (SLC22) family of organic cation/anion/zwitterion transporters of the Major Facilitator Superfamily; The Solute carrier 22 (SLC22) family of organic cation/anion/zwitterion transporters includes organic cation transporters (OCTs), organic zwitterion/cation transporters (OCTNs), and organic anion transporters (OATs). SLC22 transporters interact with a variety of compounds that include drugs of abuse, environmental toxins, opioid analgesics, antidepressant and anxiolytic agents, and neurotransmitters and their metabolites. The SLC22 family belongs to the Major Facilitator Superfamily (MFS) of membrane transport proteins, which are thought to function through a single substrate binding site, alternating-access mechanism involving a rocker-switch type of movement.
Pssm-ID: 340875 [Multi-domain] Cd Length: 331 Bit Score: 173.54 E-value: 3.56e-49
Organic anion transporters of the Major Facilitator Superfamily of transporters; Organic anion ...
139-528
2.28e-29
Organic anion transporters of the Major Facilitator Superfamily of transporters; Organic anion transporters (OATs) generally display broad substrate specificity and they facilitate the exchange of extracellular with intracellular organic anions (OAs). Several OATs have been characterized including OAT1-10 and urate anion exchanger 1 (URAT1, also called SLC22A12). Many OATs occur in renal proximal tubules, the site of active drug secretion. OATs mediate the absorption, distribution, and excretion of a diverse array of environmental toxins, and clinically important drugs, including anti-HIV therapeutics, anti-tumor drugs, antibiotics, anti-hypertensives, and anti-inflammatories, and therefore is critical for the survival of the mammalian species. OAT falls into the SLC22 (solute carrier 22) family of the Major Facilitator Superfamily (MFS) of membrane transport proteins, which are thought to function through a single substrate binding site, alternating-access mechanism involving a rocker-switch type of movement.
Pssm-ID: 340932 [Multi-domain] Cd Length: 341 Bit Score: 118.93 E-value: 2.28e-29
Solute carrier family 22 members 1, 2, and 3 (also called Organic cation transporters 1, 2, ...
133-300
3.55e-24
Solute carrier family 22 members 1, 2, and 3 (also called Organic cation transporters 1, 2, and 3) of the Major Facilitator Superfamily of transporters; This sufamily includes solute carrier family 22 member 1 (SLC22A1, also called organic cation transporter 1 or OCT1), SLC22A2 (or OCT2), SLC22A3 (or OCT3), and similar proteins. OCT1-3 have similar basic functional properties: they are able to translocate a variety of structurally different organic cations in both directions across the plasma membrane; to translocate organic cations independently from sodium, chloride or proton gradients; and to function as electrogenic uniporters for cations or as electroneutral cation exchangers. They show overlapping but distinct substrate and inhibitor specificities, and different tissue expression pattern. In humans, OCT1 is strongly expressed in the liver, OCT2 is highly expressed in the kidney where it is localized at the basolateral membrane of renal proximal tubules, and OCT3 is most strongly expressed in skeletal muscle. OCTs are broad-specificity transporters that play a critical role in the excretion and distribution of endogeneous organic cations and for the uptake, elimination and distribution of cationic drugs, toxins, and environmental waste products. The SLC22A1-3 subfamily belongs to the Solute carrier 22 (SLC22) family of organic cation/anion/zwitterion transporters of the Major Facilitator Superfamily (MFS) of membrane transport proteins. MFS proteins are thought to function through a single substrate binding site, alternating-access mechanism involving a rocker-switch type of movement.
Pssm-ID: 340937 [Multi-domain] Cd Length: 340 Bit Score: 103.97 E-value: 3.55e-24
Solute carrier family 22 member 6 (also called Organic anion transporter 1) and similar ...
135-526
5.70e-23
Solute carrier family 22 member 6 (also called Organic anion transporter 1) and similar transporters of the Major Facilitator Superfamily; This subfamily includes solute carrier family 22 member 6 (SLC22A6, also called organic anion transporter 1 or OAT1 or para-aminohippurate (PAH) transporter), SLC22A8 (or OAT3), and SLC22A20 (or OAT6). OAT1 and OAT3 are involved in the renal elimination of endogenous and exogenous organic anions (OAs). They function as OA exchangers, coupling the uptake of OAs against an electrochemical gradient with the efflux of intracellular dicarboxylates. SLC22A20 is an OA transporter that mediates the uptake of estrone sulfate. The OAT1-like subfamily belongs to the Solute carrier 22 (SLC22) family of organic cation/anion/zwitterion transporters of the Major Facilitator Superfamily (MFS) of membrane transport proteins. MFS proteins are thought to function through a single substrate binding site, alternating-access mechanism involving a rocker-switch type of movement.
Pssm-ID: 341004 [Multi-domain] Cd Length: 339 Bit Score: 100.18 E-value: 5.70e-23
Solute carrier family 22 member 7 (also called Organic anion transporter 2) of the Major ...
133-528
7.69e-21
Solute carrier family 22 member 7 (also called Organic anion transporter 2) of the Major Facilitator Superfamily of transporters; Solute carrier family 22 member 7 (SLC22A7), also called organic anion transporter 2 (OAT2) mediates sodium-independent transport of a variety of organic anions including prostaglandin E2, prostaglandin F2, tetracycline, bumetanide, estrone sulfate, glutarate, dehydroepiandrosterone sulfate, allopurinol, 5-fluorouracil, paclitaxel, L-ascorbic acid, salicylate, ethotrexate, and alpha-ketoglutarate. It also plays a role in renal uric acid uptake from blood as a first step of tubular secretion. OAT2 belongs to the Solute carrier 22 (SLC22) family of organic cation/anion/zwitterion transporters of the Major Facilitator Superfamily (MFS)of membrane transport proteins. MFS proteins are thought to function through a single substrate binding site, alternating-access mechanism involving a rocker-switch type of movement.
Pssm-ID: 341005 [Multi-domain] Cd Length: 341 Bit Score: 94.03 E-value: 7.69e-21
Solute carrier family 22 members 4 and 5 (also called Organic cation/carnitine transporters 1 ...
140-528
3.39e-19
Solute carrier family 22 members 4 and 5 (also called Organic cation/carnitine transporters 1 and 2) of the Major Facilitator Superfamily of transporters; This subfamily is composed of solute carrier family 22 members 4 (SLC22A4) and 5 (SLC22A5), and similar proteins. SLC22A4 is also called ergothioneine transporter (ETT) or organic cation/carnitine transporter 1 (OCTN1). It is a sodium-ion dependent, low affinity carnitine transporter, and a highly specific transporter for the uptake of ergothioneine (ET), a thiolated derivative of histidine with antioxidant properties. ET is a natural compound produced only by certain fungi and bacteria and must be absorbed from the diet by humans and other vetebrates. SLC22A5, also called organic cation/carnitine transporter 2 (OCTN2), is a sodium-ion dependent, high affinity carnitine transporter involved in the active cellular uptake of carnitine. SLC22A4/5 belongs to the Solute carrier 22 (SLC22) family of organic cation/anion/zwitterion transporters of the Major Facilitator Superfamily (MFS) of membrane transport proteins. MFS proteins are thought to function through a single substrate binding site, alternating-access mechanism involving a rocker-switch type of movement.
Pssm-ID: 340934 [Multi-domain] Cd Length: 342 Bit Score: 89.06 E-value: 3.39e-19
Solute carrier family 22 member 16 (also called Carnitine transporter 2) of the Major ...
140-503
7.42e-17
Solute carrier family 22 member 16 (also called Carnitine transporter 2) of the Major Facilitator Superfamily of transporters; Solute carrier family 22 member 16 (SLC22A16) is also called carnitine transporter 2 (CT2), fly-like putative transporter 2 (FLIPT2), organic cation transporter OKB1, or organic cation/carnitine transporter 6 (OCT6). It is a partially sodium-ion dependent high affinity carnitine transporter. It also transports organic cations such as tetraethylammonium (TEA) and doxorubicin. It is one of several organic cation transporters (OCTs) that falls into the SLC22 (solute carrier 22) family. OCTs are broad-specificity transporters that play a critical role in the excretion and distribution of endogeneous organic cations and for the uptake, elimination and distribution of cationic drugs, toxins, and environmental waste products. SLC22A16 belongs to the Major Facilitator Superfamily (MFS) of membrane transport proteins. MFS proteins are thought to function through a single substrate binding site, alternating-access mechanism involving a rocker-switch type of movement.
Pssm-ID: 340933 [Multi-domain] Cd Length: 341 Bit Score: 82.11 E-value: 7.42e-17
Plant organic cation/carnitine transporters of the Major Facilitator Superfamily of ...
142-511
6.47e-14
Plant organic cation/carnitine transporters of the Major Facilitator Superfamily of transporters; Plant organic cation/carnitine transporters (OCTs) are sequence-similar to their animal counterparts, which are broad-specificity transporters that play a critical role in the excretion and distribution of endogeneous organic cations and for the uptake, elimination and distribution of cationic drugs, toxins, and environmental waste products. Little is know about plant OCTs. In Arabidopsis, there are six genes belonging to this family that show distinct, organ-specific expression pattern of the individual genes. AtOCT1 has been found to affect root development and carnitine-related responses in Arabidopsis. AtOCT4, 5 and 6 are up-regulated during drought stress, AtOCT3 and 5 during cold stress and AtOCT5 and 6 during salt stress treatments. Plant OCTs belongs to the Solute carrier 22 (SLC22) family of organic cation/anion/zwitterion transporters of the Major Facilitator Superfamily (MFS) of membrane transport proteins. MFS proteins are thought to function through a single substrate binding site, alternating-access mechanism involving a rocker-switch type of movement.
Pssm-ID: 340936 [Multi-domain] Cd Length: 342 Bit Score: 73.16 E-value: 6.47e-14
Glucose transporter (GLUT) types 6 and 8, Class 3 GLUTs, and similar transporters of the Major ...
179-499
2.49e-13
Glucose transporter (GLUT) types 6 and 8, Class 3 GLUTs, and similar transporters of the Major Facilitator Superfamily; This subfamily is composed of glucose transporter type 6 (GLUT6), GLUT8, plant early dehydration-induced gene ERD6-like proteins, and similar insect proteins including facilitated trehalose transporter Tret1-1. GLUTs, also called Solute carrier family 2, facilitated glucose transporters (SLC2A), are a family of proteins that facilitate the transport of hexoses such as glucose and fructose. There are fourteen GLUTs found in humans; they display different substrate specificities and tissue expression. They have been categorized into three classes based on sequence similarity: Class 1 (GLUTs 1-4, 14); Class 2 (GLUTs 5, 7, 9, and 11); and Class 3 (GLUTs 6, 8, 10, 12, and HMIT). Insect Tret1-1 is a low-capacity facilitative transporter for trehalose that mediates the transport of trehalose synthesized in the fat body and the incorporation of trehalose into other tissues that require a carbon source. GLUT proteins are comprised of about 500 amino acid residues, possess a single N-linked oligosaccharide, and have 12 transmembrane segments. They belong to the Glucose transporter -like (GLUT-like) family of the Major Facilitator Superfamily (MFS) of membrane transport proteins. MFS proteins are thought to function through a single substrate binding site, alternating-access mechanism involving a rocker-switch type of movement.
Pssm-ID: 340916 [Multi-domain] Cd Length: 436 Bit Score: 72.22 E-value: 2.49e-13
Metazoan Synaptic vesicle glycoprotein 2 (SV2) and related small molecule transporters of the ...
184-501
6.08e-12
Metazoan Synaptic vesicle glycoprotein 2 (SV2) and related small molecule transporters of the Major Facilitator Superfamily; This family is composed of metazoan synaptic vesicle glycoprotein 2 (SV2) and related small molecule transporters including those that transport inorganic phosphate (Pht), aromatic compounds (PcaK and related proteins), proline/betaine (ProP), alpha-ketoglutarate (KgtP), citrate (CitA), shikimate (ShiA), and cis,cis-muconate (MucK), among others. SV2 is a transporter-like protein that serves as the receptor for botulinum neurotoxin A (BoNT/A), one of seven neurotoxins produced by the bacterium Clostridium botulinum. BoNT/A blocks neurotransmitter release by cleaving synaptosome-associated protein of 25 kD (SNAP-25) within presynaptic nerve terminals. Also included in this family is synaptic vesicle 2 (SV2)-related protein (SVOP) and similar proteins. SVOP is a transporter-like nucleotide binding protein that localizes to neurotransmitter-containing vesicles. The SV2-like family belongs to the Major Facilitator Superfamily (MFS) of membrane transport proteins, which are thought to function through a single substrate binding site, alternating-access mechanism involving a rocker-switch type of movement.
Pssm-ID: 340874 [Multi-domain] Cd Length: 353 Bit Score: 67.24 E-value: 6.08e-12
Class 1 and Class 2 Glucose transporters (GLUTs) of the Major Facilitator Superfamily; This ...
176-486
1.27e-11
Class 1 and Class 2 Glucose transporters (GLUTs) of the Major Facilitator Superfamily; This subfamily includes Class 1 and Class 2 glucose transporters (GLUTs) including Solute carrier family 2, facilitated glucose transporter member 1 (SLC2A1, also called glucose transporter type 1 or GLUT1), SLC2A2-5 (GLUT2-5), SLC2A7 (GLUT7), SLC2A9 (GLUT9), SLC2A11 (GLUT11), SLC2A14 (GLUT14), and similar proteins. GLUTs are a family of proteins that facilitate the transport of hexoses such as glucose and fructose. There are fourteen GLUTs found in humans; they display different substrate specificities and tissue expression. They have been categorized into three classes based on sequence similarity: Class 1 (GLUTs 1-4, 14); Class 2 (GLUTs 5, 7, 9, and 11); and Class 3 (GLUTs 6, 8, 10, 12, and HMIT). GLUTs 1-5 are the most thoroughly studied and are well-established as glucose and/or fructose transporters in various tissues and cell types. GLUT proteins are comprised of about 500 amino acid residues, possess a single N-linked oligosaccharide, and have 12 transmembrane segments. They belong to the Glucose transporter -like (GLUT-like) family of the Major Facilitator Superfamily (MFS) of membrane transport proteins. MFS proteins are thought to function through a single substrate binding site, alternating-access mechanism involving a rocker-switch type of movement.
Pssm-ID: 340915 [Multi-domain] Cd Length: 447 Bit Score: 66.90 E-value: 1.27e-11
Solute carrier family 22 member 15 of the Major Facilitator Superfamily of transporters; ...
154-304
5.10e-11
Solute carrier family 22 member 15 of the Major Facilitator Superfamily of transporters; Solute carrier family 22 member 15 (SLC22A15) is also called fly-like putative transporter 1 (FLIPT1). It is expressed at the highest levels in the kidney and brain. It is a member of the SLC22 family of transporters, which includes organic cation transporters (OCTs), organic zwitterion/cation transporters (OCTNs), and organic anion transporters (OATs). SLC22 transporters interact with a variety of compounds that include drugs of abuse, environmental toxins, opioid analgesics, antidepressant and anxiolytic agents, and neurotransmitters and their metabolites. SLC22A15 belongs to the Major Facilitator Superfamily (MFS) of membrane transport proteins. MFS proteins are thought to function through a single substrate binding site, alternating-access mechanism involving a rocker-switch type of movement.
Pssm-ID: 340935 [Multi-domain] Cd Length: 353 Bit Score: 64.41 E-value: 5.10e-11
MFS transporter, sugar porter (SP) family; This model represent the sugar porter subfamily of ...
177-493
2.07e-10
MFS transporter, sugar porter (SP) family; This model represent the sugar porter subfamily of the major facilitator superfamily (pfam00083) [Transport and binding proteins, Carbohydrates, organic alcohols, and acids]
Pssm-ID: 273317 [Multi-domain] Cd Length: 481 Bit Score: 63.13 E-value: 2.07e-10
D-xylose-proton symporter and similar transporters of the Major Facilitator Superfamily; This ...
179-314
7.06e-10
D-xylose-proton symporter and similar transporters of the Major Facilitator Superfamily; This subfamily includes bacterial transporters such as D-xylose-proton symporter (XylE or XylT), arabinose-proton symporter (AraE), galactose-proton symporter (GalP), major myo-inositol transporter IolT, glucose transport protein, putative metabolite transport proteins YfiG, YncC, and YwtG, and similar proteins. The symporters XylE, AraE, and GalP facilitate the uptake of D-xylose, arabinose, and galactose, respectively, across the boundary membrane with the concomitant transport of protons into the cell. IolT is involved in polyol metabolism and myo-inositol degradation into acetyl-CoA. The XylE-like subfamily belongs to the Glucose transporter -like (GLUT-like) family of the Major Facilitator Superfamily (MFS) of membrane transport proteins. MFS proteins are thought to function through a single substrate binding site, alternating-access mechanism involving a rocker-switch type of movement.
Pssm-ID: 340917 [Multi-domain] Cd Length: 383 Bit Score: 61.04 E-value: 7.06e-10
phosphate:H+ symporter; This model represents the phosphate uptake symporter subfamily of the ...
180-548
3.88e-08
phosphate:H+ symporter; This model represents the phosphate uptake symporter subfamily of the major facilitator superfamily (pfam00083). [Transport and binding proteins, Anions]
Pssm-ID: 129965 [Multi-domain] Cd Length: 502 Bit Score: 55.89 E-value: 3.88e-08
Glucose transporters (GLUTs) and other similar sugar transporters of the Major Facilitator ...
176-311
1.16e-07
Glucose transporters (GLUTs) and other similar sugar transporters of the Major Facilitator Superfamily; This family is composed of glucose transporters (GLUTs) and other sugar transporters including fungal hexose transporters (HXT), bacterial xylose transporter (XylE), plant sugar transport proteins (STP) and polyol transporters (PLT), H(+)-myo-inositol cotransporter (HMIT), and similar proteins. GLUTs, also called Solute carrier family 2, facilitated glucose transporters (SLC2A), are a family of proteins that facilitate the transport of hexoses such as glucose and fructose. There are fourteen GLUTs found in humans; they display different substrate specificities and tissue expression. They have been categorized into three classes based on sequence similarity: Class 1 (GLUTs 1-4, 14); Class 2 (GLUTs 5, 7, 9, and 11); and Class 3 (GLUTs 6, 8, 10, 12, and HMIT). GLUT proteins are comprised of about 500 amino acid residues, possess a single N-linked oligosaccharide, and have 12 transmembrane segments. The GLUT-like family belongs to the Major Facilitator Superfamily (MFS) of membrane transport proteins, which are thought to function through a single substrate binding site, alternating-access mechanism involving a rocker-switch type of movement.
Pssm-ID: 340873 [Multi-domain] Cd Length: 365 Bit Score: 54.12 E-value: 1.16e-07
Major Facilitator Superfamily; The Major Facilitator Superfamily (MFS) is a large and diverse ...
188-511
1.64e-07
Major Facilitator Superfamily; The Major Facilitator Superfamily (MFS) is a large and diverse group of secondary transporters that includes uniporters, symporters, and antiporters. MFS proteins facilitate the transport across cytoplasmic or internal membranes of a variety of substrates including ions, sugar phosphates, drugs, neurotransmitters, nucleosides, amino acids, and peptides. They do so using the electrochemical potential of the transported substrates. Uniporters transport a single substrate, while symporters and antiporters transport two substrates in the same or in opposite directions, respectively, across membranes. MFS proteins are typically 400 to 600 amino acids in length, and the majority contain 12 transmembrane alpha helices (TMs) connected by hydrophilic loops. The N- and C-terminal halves of these proteins display weak similarity and may be the result of a gene duplication/fusion event. Based on kinetic studies and the structures of a few bacterial superfamily members, GlpT (glycerol-3-phosphate transporter), LacY (lactose permease), and EmrD (multidrug transporter), MFS proteins are thought to function through a single substrate binding site, alternating-access mechanism involving a rocker-switch type of movement. Bacterial members function primarily for nutrient uptake, and as drug-efflux pumps to confer antibiotic resistance. Some MFS proteins have medical significance in humans such as the glucose transporter Glut4, which is impaired in type II diabetes, and glucose-6-phosphate transporter (G6PT), which causes glycogen storage disease when mutated.
Pssm-ID: 349949 [Multi-domain] Cd Length: 378 Bit Score: 53.58 E-value: 1.64e-07
Cis,cis-muconate transport protein and similar proteins of the Major Facilitator Superfamily; ...
177-501
1.13e-06
Cis,cis-muconate transport protein and similar proteins of the Major Facilitator Superfamily; This subfamily is composed of Acinetobacter sp. Cis,cis-muconate transport protein (MucK), Escherichia coli putative sialic acid transporter 1, and similar proteins. MucK functions in the uptake of muconate and allows Acinetobacter calcoaceticus ADP1 (BD413) to grow on exogenous cis,cis-muconate as the sole carbon source. The MucK subfamily belongs to the Metazoan Synaptic Vesicle Glycoprotein 2 (SV2) and related small molecule transporter family (SV2-like) of the Major Facilitator Superfamily (MFS) of membrane transport proteins. MFS proteins are thought to function through a single substrate binding site, alternating-access mechanism involving a rocker-switch type of movement.
Pssm-ID: 340929 [Multi-domain] Cd Length: 389 Bit Score: 51.15 E-value: 1.13e-06
Synaptic vesicle 2-related protein (SVOP) and related proteins of the Major Facilitator ...
156-511
2.79e-06
Synaptic vesicle 2-related protein (SVOP) and related proteins of the Major Facilitator Superfamily; This subfamily is composed of synaptic vesicle 2 (SV2)-related protein (SVOP), SVOP-like protein (SVOPL), and similar proteins. SVOP is a transporter-like nucleotide binding protein that localizes to neurotransmitter-containing vesicles. Like SV2, SVOP is expressed in all brain regions, with highest levels in cerebellum, hindbrain and pineal gland. Studies with knockout mice suggets that SVOP may perform a subtle function that is not necessary for survival under normal conditions, since mice lacking SVOP are viable, fertile, and phenotypically normal. SVOP and SVOPL share structural similarity to the solute carrier family 22 (SLC22), a large family of organic cation and anion transporters. The SVOP-like subfamily belongs to the Metazoan Synaptic Vesicle Glycoprotein 2 (SV2) and related small molecule transporter family (SV2-like) of the Major Facilitator Superfamily (MFS) of membrane transport proteins. MFS proteins are thought to function through a single substrate binding site, alternating-access mechanism involving a rocker-switch type of movement.
Pssm-ID: 340930 [Multi-domain] Cd Length: 367 Bit Score: 49.84 E-value: 2.79e-06
Fungal Hexose transporter subfamily of the Major Facilitator Superfamily of transporters and ...
176-314
3.68e-06
Fungal Hexose transporter subfamily of the Major Facilitator Superfamily of transporters and similar proteins; The fungal hexose transporter (HXT) subfamily is comprised of functionally redundant proteins that function mainly in the transport of glucose, as well as other sugars such as galactose and fructose. Saccharomyces cerevisiae has 20 genes that encode proteins in this family (HXT1 to HXT17, GAL2, SNF3, and RGT2). Seven of these (HXT1-7) encode functional glucose transporters. Gal2p is a galactose transporter, while Rgt2p and Snf3p act as cell surface glucose receptors that initiate signal transduction in response to glucose, functioning in an induction pathway responsible for glucose uptake. Rgt2p is activated by high levels of glucose and stimulates expression of low affinity glucose transporters such as Hxt1p and Hxt3p, while Snf3p generates a glucose signal in response to low levels of glucose, stimulating the expression of high affinity glucose transporters such as Hxt2p and Hxt4p. Schizosaccharomyces pombe contains eight GHT genes (GHT1-8) belonging to this family. Ght1, Ght2, and Ght5 are high-affinity glucose transporters; Ght3 is a high-affinity gluconate transporter; and Ght6 high-affinity fructose transporter. The substrate specificities for Ght4, Ght7, and Ght8 remain undetermined. The HXT subfamily belongs to the Glucose transporter -like (GLUT-like) family of the Major Facilitator Superfamily (MFS) of membrane transport proteins. MFS proteins are thought to function through a single substrate binding site, alternating-access mechanism involving a rocker-switch type of movement.
Pssm-ID: 340914 [Multi-domain] Cd Length: 403 Bit Score: 49.56 E-value: 3.68e-06
Class 2 Glucose transporters (GLUTs) of the Major Facilitator Superfamily; GLUTs, also called ...
177-315
5.26e-06
Class 2 Glucose transporters (GLUTs) of the Major Facilitator Superfamily; GLUTs, also called Solute carrier family 2, facilitated glucose transporters (SLC2A), are a family of proteins that facilitate the transport of hexoses such as glucose and fructose. There are fourteen GLUTs found in humans; they display different substrate specificities and tissue expression. They have been categorized into three classes based on sequence similarity: Class 1 (GLUTs 1-4, 14); Class 2 (GLUTs 5, 7, 9, and 11); and Class 3 (GLUTs 6, 8, 10, 12, and HMIT). GLUT5, also called Solute carrier family 2, facilitated glucose transporter member 5 (SLC2A5), is a well-established fructose transporter found in the small intestine. GLUT7 (or SLC2A7) is a high-affinity glucose and fructose transporter expressed in the small intestine and colon. GLUT9 (or SLC2A9) transports urate and fructose, and is most strongly expressed in the basolateral membranes of proximal renal tubular cells, liver and placenta. It may play a role in urate reabsorption by proximal tubules. GLUT11 (or SLC2A11) is a facilitative glucose transporter expressed in heart and skeletal muscle. GLUT proteins are comprised of about 500 amino acid residues, possess a single N-linked oligosaccharide, and have 12 transmembrane segments. They belong to the Glucose transporter -like (GLUT-like) family of the Major Facilitator Superfamily (MFS) of membrane transport proteins. MFS proteins are thought to function through a single substrate binding site, alternating-access mechanism involving a rocker-switch type of movement.
Pssm-ID: 340990 [Multi-domain] Cd Length: 452 Bit Score: 49.15 E-value: 5.26e-06
H(+)-myo-inositol cotransporter and similar transporters of the Major Facilitator Superfamily; ...
178-312
7.55e-06
H(+)-myo-inositol cotransporter and similar transporters of the Major Facilitator Superfamily; This subfamily is composed of myo-inositol/inositol transporters and similar transporters from vertebrates, plant, and fungi. The human protein is called H(+)-myo-inositol cotransporter/Proton myo-inositol cotransporter (HMIT), or H(+)-myo-inositol symporter, or Solute carrier family 2 member 13 (SLC2A13). HMIT is classified as a Class 3 GLUT (glucose transporter) based on sequence similarity with GLUTs, but it does not transport glucose. It specifically transports myo-inositol and is expressed predominantly in the brain, with high expression in the hippocampus, hypothalamus, cerebellum and brainstem. HMIT may be involved in regulating processes that require high levels of myo-inositol or its phosphorylated derivatives, such as membrane recycling, growth cone dynamics, and synaptic vesicle exocytosis. Arabidopsis Inositol transporter 4 (AtINT4) mediates high-affinity H+ symport of myo-inositol across the plasma membrane. The HMIT-like subfamily belongs to the Glucose transporter -like (GLUT-like) family of the Major Facilitator Superfamily (MFS) of membrane transport proteins. MFS proteins are thought to function through a single substrate binding site, alternating-access mechanism involving a rocker-switch type of movement.
Pssm-ID: 340918 [Multi-domain] Cd Length: 362 Bit Score: 48.42 E-value: 7.55e-06
Glucose transporter (GLUT) types 10 and 12, Class 3 GLUTs, and similar transporters of the ...
143-312
2.74e-05
Glucose transporter (GLUT) types 10 and 12, Class 3 GLUTs, and similar transporters of the Major Facilitator Superfamily; This subfamily is composed of glucose transporter type 10, GLUT12, plant polyol transporters (PLTs), and similar proteins. GLUTs, also called Solute carrier family 2, facilitated glucose transporters (SLC2A), are a family of proteins that facilitate the transport of hexoses such as glucose and fructose. There are fourteen GLUTs found in humans; they display different substrate specificities and tissue expression. They have been categorized into three classes based on sequence similarity: Class 1 (GLUTs 1-4, 14); Class 2 (GLUTs 5, 7, 9, and 11); and Class 3 (GLUTs 6, 8, 10, 12, and HMIT). GLUT proteins are comprised of about 500 amino acid residues, possess a single N-linked oligosaccharide, and have 12 transmembrane segments. They belong to the Glucose transporter -like (GLUT-like) family of the Major Facilitator Superfamily (MFS) of membrane transport proteins. MFS proteins are thought to function through a single substrate binding site, alternating-access mechanism involving a rocker-switch type of movement.
Pssm-ID: 340920 [Multi-domain] Cd Length: 389 Bit Score: 46.58 E-value: 2.74e-05
Synaptic vesicle 2-related protein (SVOP) of the Major Facilitator Superfamily; Synaptic ...
159-511
7.62e-05
Synaptic vesicle 2-related protein (SVOP) of the Major Facilitator Superfamily; Synaptic vesicle 2 (SV2)-related protein (SVOP) is a transporter-like nucleotide binding protein that localizes to neurotransmitter-containing vesicles. Like SV2, SVOP is expressed in all brain regions, with highest levels in cerebellum, hindbrain and pineal gland. Studies with knockout mice suggets that SVOP may perform a subtle function that is not necessary for survival under normal conditions, since mice lacking SVOP are viable, fertile, and phenotypically normal. SVOP shares structural similarity to the solute carrier family 22 (SLC22), a large family of organic cation and anion transporters. This SVOP subfamily belongs to the Metazoan Synaptic Vesicle Glycoprotein 2 (SV2) and related small molecule transporter family (SV2-like) of the Major Facilitator Superfamily (MFS) of membrane transport proteins. MFS proteins are thought to function through a single substrate binding site, alternating-access mechanism involving a rocker-switch type of movement.
Pssm-ID: 340999 [Multi-domain] Cd Length: 372 Bit Score: 45.19 E-value: 7.62e-05
MFS family permease, includes anhydromuropeptide permease AmpG [Carbohydrate transport and ...
177-320
1.09e-04
MFS family permease, includes anhydromuropeptide permease AmpG [Carbohydrate transport and metabolism, Amino acid transport and metabolism, Inorganic ion transport and metabolism, General function prediction only];
Pssm-ID: 440245 [Multi-domain] Cd Length: 295 Bit Score: 44.42 E-value: 1.09e-04
Class 1 Glucose transporters (GLUTs) of the Major Facilitator Superfamily; GLUTs, also called ...
166-462
2.32e-04
Class 1 Glucose transporters (GLUTs) of the Major Facilitator Superfamily; GLUTs, also called Solute carrier family 2, facilitated glucose transporters (SLC2A), are a family of proteins that facilitate the transport of hexoses such as glucose and fructose. There are fourteen GLUTs found in humans; they display different substrate specificities and tissue expression. They have been categorized into three classes based on sequence similarity: Class 1 (GLUTs 1-4, 14); Class 2 (GLUTs 5, 7, 9, and 11); and Class 3 (GLUTs 6, 8, 10, 12, and HMIT). GLUTs 1-4 are well-established as glucose and/or fructose transporters in various tissues and cell types. GLUT1, also called solute carrier family 2, facilitated glucose transporter member 1 (SLC2A1), displays broad substrate specificity and can transport a wide range of pentoses and hexoses including glucose, galactose, mannose, and glucosamine. It is found in the brain, erythrocytes, and in many fetal tissues. GLUT2 (or SLC2A2) is found in the liver, islet of Langerhans, intestine, and kidney, and is the isoform that likely mediates the bidirectional transfer of glucose across the plasma membrane of hepatocytes and is responsible for uptake of glucose by beta cells. GLUT3 (or SLC2A3) is found in the brain and can mediates the uptake of glucose, 2-deoxyglucose, galactose, mannose, xylose and fucose, and dehydroascorbate. GLUT4 (or SLC2A4) is an insulin-regulated facilitative glucose transporter found in adipose tissues, and in skeletal and cardiac muscle. GLUT14 (or SLC2A14) is an orphan transporter expressed mainly in the testis. GLUT proteins are comprised of about 500 amino acid residues, possess a single N-linked oligosaccharide, and have 12 transmembrane segments. They belong to the Glucose transporter -like (GLUT-like) family of the Major Facilitator Superfamily (MFS) of membrane transport proteins. MFS proteins are thought to function through a single substrate binding site, alternating-access mechanism involving a rocker-switch type of movement.
Pssm-ID: 340989 [Multi-domain] Cd Length: 445 Bit Score: 43.86 E-value: 2.32e-04
Purine ribonucleoside efflux pump NepI and similar transporters of the Major Facilitator ...
179-499
3.51e-04
Purine ribonucleoside efflux pump NepI and similar transporters of the Major Facilitator Superfamily; This family is composed of purine efflux pumps such as Escherichia coli NepI and Bacillus subtilis PbuE, sugar efflux transporters such as Corynebacterium glutamicum arabinose efflux permease, multidrug resistance (MDR) transporters such as Streptomyces lividans chloramphenicol resistance protein (CmlR), and similar proteins. NepI and PbuE are involved in the efflux of purine ribonucleosides such as guanosine, adenosine and inosine, as well as purine bases like guanine, adenine, and hypoxanthine, and purine base analogs. They play a role in the maintenance of cellular purine base pools, as well as in protecting the cells and conferring resistance against toxic purine base analogs such as 6-mercaptopurine. MDR transporters are drug/H+ antiporters (DHA) that mediate the efflux of a variety of drugs and toxic compounds, and confer resistance to these compounds. The NepI-like family belongs to the Major Facilitator Superfamily (MFS) of membrane transport proteins, which are thought to function through a single substrate binding site, alternating-access mechanism involving a rocker-switch type of movement.
Pssm-ID: 340882 [Multi-domain] Cd Length: 370 Bit Score: 42.92 E-value: 3.51e-04
bacterial MdtG-like and eukaryotic solute carrier 18 (SLC18) family of the Major Facilitator ...
176-511
3.97e-04
bacterial MdtG-like and eukaryotic solute carrier 18 (SLC18) family of the Major Facilitator Superfamily of transporters; This family is composed of eukaryotic solute carrier 18 (SLC18) family transporters and related bacterial multidrug resistance (MDR) transporters including several proteins from Escherichia coli such as multidrug resistance protein MdtG, from Bacillus subtilis such as multidrug resistance proteins 1 (Bmr1) and 2 (Bmr2), and from Staphylococcus aureus such as quinolone resistance protein NorA. The family also includes Escherichia coli arabinose efflux transporters YfcJ and YhhS. MDR transporters are drug/H+ antiporters (DHA) that mediate the efflux of a variety of drugs and toxic compounds, and confer resistance to these compounds. The SLC18 transporter family includes vesicular monoamine transporters (VAT1 and VAT2), vesicular acetylcholine transporter (VAChT), and SLC18B1, which is proposed to be a vesicular polyamine transporter (VPAT). The MdtG/SLC18 family belongs to the Major Facilitator Superfamily (MFS) of membrane transport proteins, which are thought to function through a single substrate binding site, alternating-access mechanism involving a rocker-switch type of movement.
Pssm-ID: 340883 [Multi-domain] Cd Length: 375 Bit Score: 42.95 E-value: 3.97e-04
Plant Polyol transporter family of the Major Facilitator Superfamily of transporters; The ...
182-312
1.79e-03
Plant Polyol transporter family of the Major Facilitator Superfamily of transporters; The plant Polyol transporter (PLT) subfamily includes PLT1-6 from Arabidopsis thaliana and similar transporters. The best characterized member of the group is Polyol transporter 5, also called Sugar-proton symporter PLT5, which mediates the H+-symport of numerous substrates including linear polyols (such as sorbitol, xylitol, erythritol or glycerol), cyclic polyol myo-inositol, and different hexoses, pentoses (including ribose), tetroses, and sugar alcohols. It functions to transport a wide range of substrates into specific sink tissues in the plant. The PLT subfamily belongs to the Glucose transporter -like (GLUT-like) family of the Major Facilitator Superfamily (MFS) of membrane transport proteins. MFS proteins are thought to function through a single substrate binding site, alternating-access mechanism involving a rocker-switch type of movement.
Pssm-ID: 340995 [Multi-domain] Cd Length: 387 Bit Score: 40.85 E-value: 1.79e-03
Synaptic vesicle 2 (SV2)-related protein-like (SVOPL) of the Major Facilitator Superfamily; ...
156-511
2.56e-03
Synaptic vesicle 2 (SV2)-related protein-like (SVOPL) of the Major Facilitator Superfamily; Synaptic vesicle 2 (SV2)-related protein-like (SVOPL) or SVOP-like protein is a transporter-like protein that shares structural similarity to the solute carrier family 22 (SLC22), a large family of organic cation and anion transporters. It belongs to the Metazoan Synaptic Vesicle Glycoprotein 2 (SV2) and related small molecule transporter family (SV2-like) of the Major Facilitator Superfamily (MFS) of membrane transport proteins. MFS proteins are thought to function through a single substrate binding site, alternating-access mechanism involving a rocker-switch type of movement.
Pssm-ID: 341000 [Multi-domain] Cd Length: 375 Bit Score: 40.56 E-value: 2.56e-03
Metazoan Synaptic vesicle glycoprotein 2 (SV2) and related small molecule transporters of the ...
175-249
3.50e-03
Metazoan Synaptic vesicle glycoprotein 2 (SV2) and related small molecule transporters of the Major Facilitator Superfamily; This family is composed of metazoan synaptic vesicle glycoprotein 2 (SV2) and related small molecule transporters including those that transport inorganic phosphate (Pht), aromatic compounds (PcaK and related proteins), proline/betaine (ProP), alpha-ketoglutarate (KgtP), citrate (CitA), shikimate (ShiA), and cis,cis-muconate (MucK), among others. SV2 is a transporter-like protein that serves as the receptor for botulinum neurotoxin A (BoNT/A), one of seven neurotoxins produced by the bacterium Clostridium botulinum. BoNT/A blocks neurotransmitter release by cleaving synaptosome-associated protein of 25 kD (SNAP-25) within presynaptic nerve terminals. Also included in this family is synaptic vesicle 2 (SV2)-related protein (SVOP) and similar proteins. SVOP is a transporter-like nucleotide binding protein that localizes to neurotransmitter-containing vesicles. The SV2-like family belongs to the Major Facilitator Superfamily (MFS) of membrane transport proteins, which are thought to function through a single substrate binding site, alternating-access mechanism involving a rocker-switch type of movement.
Pssm-ID: 340874 [Multi-domain] Cd Length: 353 Bit Score: 39.89 E-value: 3.50e-03
Alpha-ketoglutarate permease of the Major Facilitator Superfamily of transporters; This ...
184-495
5.31e-03
Alpha-ketoglutarate permease of the Major Facilitator Superfamily of transporters; This subfamily includes Escherichia coli alpha-ketoglutarate permease (KgtP) and similar proteins. KgtP is a constitutively expressed proton symporter that functions in the uptake of alpha-ketoglutarate across the boundary membrane. Also included is a putative transporter from Pseudomonas aeruginosa named dicarboxylic acid transporter PcaT. The KgtP subfamily belongs to the Metazoan Synaptic Vesicle Glycoprotein 2 (SV2) and related small molecule transporter family (SV2-like) of the Major Facilitator Superfamily (MFS) of membrane transport proteins. MFS proteins are thought to function through a single substrate binding site, alternating-access mechanism involving a rocker-switch type of movement.
Pssm-ID: 340925 [Multi-domain] Cd Length: 407 Bit Score: 39.59 E-value: 5.31e-03
4-hydroxybenzoate transporter PcaK and similar transporters of the Major Facilitator ...
407-510
6.56e-03
4-hydroxybenzoate transporter PcaK and similar transporters of the Major Facilitator Superfamily; This aromatic acid:H(+) symporter subfamily includes Acinetobacter sp. 4-hydroxybenzoate transporter PcaK, Pseudomonas putida gallate transporter (GalT), Corynebacterium glutamicum gentisate transporter (GenK), Nocardioides sp. 1-hydroxy-2-naphthoate transporter (PhdT), Escherichia coli 3-(3-hydroxy-phenyl)propionate (3HPP) transporter (MhpT), and similar proteins. These transporters are involved in the uptake across the cytoplasmic membrane of specific aromatic compounds such as 4-hydroxybenzoate, gallate, gentisate (2,5-dihydroxybenzoate), 1-hydroxy-2-naphthoate, and 3HPP, respectively. The PcaK-like aromatic acid:H(+) symporter subfamily belongs to the Metazoan Synaptic Vesicle Glycoprotein 2 (SV2) and related small molecule transporter family (SV2-like) of the Major Facilitator Superfamily (MFS) of membrane transport proteins. MFS proteins are thought to function through a single substrate binding site, alternating-access mechanism involving a rocker-switch type of movement.
Pssm-ID: 340923 [Multi-domain] Cd Length: 351 Bit Score: 39.11 E-value: 6.56e-03
Database: CDSEARCH/cdd Low complexity filter: no Composition Based Adjustment: yes E-value threshold: 0.01
References:
Wang J et al. (2023), "The conserved domain database in 2023", Nucleic Acids Res.51(D)384-8.
Lu S et al. (2020), "The conserved domain database in 2020", Nucleic Acids Res.48(D)265-8.
Marchler-Bauer A et al. (2017), "CDD/SPARCLE: functional classification of proteins via subfamily domain architectures.", Nucleic Acids Res.45(D)200-3.
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