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 ...
20-461
0e+00
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 cd17421:
Pssm-ID: 475125 [Multi-domain] Cd Length: 369 Bit Score: 520.54 E-value: 0e+00
Monocarboxylate transporter 5 of the Major Facilitator Superfamily of transporters; ...
20-461
0e+00
Monocarboxylate transporter 5 of the Major Facilitator Superfamily of transporters; Monocarboxylate transporter 5 (MCT5) is also called Solute carrier family 16 member 4 (SLC16A4). It is an orphan transporter expressed in the brain, muscle, liver, kidney, lung, ovary, placenta, and heart. It is a member of the monocarboxylate transporter (MCT) family, whose members include MCT1-4, which are proton-coupled transporters that facilitate the transport across the plasma membrane of monocarboxylates such as lactate, pyruvate, branched-chain oxo acids derived from leucine, valine and isoleucine, and ketone bodies such as acetoacetate, beta-hydroxybutyrate and acetate. MCT5 belongs to the Monocarboxylate transporter (MCT) 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: 340979 [Multi-domain] Cd Length: 369 Bit Score: 520.54 E-value: 0e+00
Monocarboxylate transporter 5 of the Major Facilitator Superfamily of transporters; ...
20-461
0e+00
Monocarboxylate transporter 5 of the Major Facilitator Superfamily of transporters; Monocarboxylate transporter 5 (MCT5) is also called Solute carrier family 16 member 4 (SLC16A4). It is an orphan transporter expressed in the brain, muscle, liver, kidney, lung, ovary, placenta, and heart. It is a member of the monocarboxylate transporter (MCT) family, whose members include MCT1-4, which are proton-coupled transporters that facilitate the transport across the plasma membrane of monocarboxylates such as lactate, pyruvate, branched-chain oxo acids derived from leucine, valine and isoleucine, and ketone bodies such as acetoacetate, beta-hydroxybutyrate and acetate. MCT5 belongs to the Monocarboxylate transporter (MCT) 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: 340979 [Multi-domain] Cd Length: 369 Bit Score: 520.54 E-value: 0e+00
Monocarboxylate transporter (MCT) family of the Major Facilitator Superfamily of transporters; ...
20-450
6.28e-87
Monocarboxylate transporter (MCT) family of the Major Facilitator Superfamily of transporters; The animal Monocarboxylate transporter (MCT) family is also called Solute carrier family 16 (SLC16 or SLC16A). It is composed of 14 members, MCT1-14. MCTs play an integral role in cellular metabolism via lactate transport and have been implicated in metabolic synergy in tumors. MCT1-4 are proton-coupled transporters that facilitate the transport across the plasma membrane of monocarboxylates such as lactate, pyruvate, branched-chain oxo acids derived from leucine, valine and isoleucine, and ketone bodies such as acetoacetate, beta-hydroxybutyrate and acetate. MCT8 and MCT10 are transporters which stimulate the cellular uptake of thyroid hormones such as thyroxine (T4), triiodothyronine (T3), reverse triiodothyronine (rT3) and diidothyronine (T2). MCT10 also functions as a sodium-independent transporter that mediates the uptake or efflux of aromatic acids. Many members are orphan transporters whose substrates are yet to be determined. The MCT 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: 340910 [Multi-domain] Cd Length: 361 Bit Score: 270.58 E-value: 6.28e-87
Monocarboxylate transporters 11 and 13 of the Major Facilitator Superfamily of transporters; ...
20-450
2.46e-51
Monocarboxylate transporters 11 and 13 of the Major Facilitator Superfamily of transporters; Monocarboxylate transporters 11 (MCT11) and 13 (MCT13) are also called Solute carrier family 16 members 11 (SLC16A11) and 13 (SLC16A13), respectively. They are orphan transporters whose substrates are yet to be determined. MCT11 is expressed in skin, lung, ovary, breast, lung, pancreas, retinal pigment epithelium, and choroid plexus. Genetic variants in SLC16A11, the gene encoding MCT11, are associated with type 2 diabetes in Mexican and other Latin American populations. MCT13 is expressed in breast and bone marrow stem cells. MCT11/13 belongs to the Monocarboxylate transporter (MCT) 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: 340981 [Multi-domain] Cd Length: 383 Bit Score: 178.35 E-value: 2.46e-51
Monocarboxylate transporter 12 of the of the Major Facilitator Superfamily of transporters; ...
20-450
2.78e-42
Monocarboxylate transporter 12 of the of the Major Facilitator Superfamily of transporters; Monocarboxylate transporter 12 (MCT12) is also called Solute carrier family 16 member 12 (SLC16A12). It is a creatine transporter encoded by the cataract and glucosuria associated gene SLC16A12. A heterozygous mutation of the gene causes a syndrome with juvenile cataracts, microcornea, and glucosuria. MCT12 may function in a basolateral exit pathway for creatine in the proximal tubule. It belongs to the Monocarboxylate transporter (MCT) 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: 340982 [Multi-domain] Cd Length: 363 Bit Score: 153.81 E-value: 2.78e-42
Monocarboxylate transporter 7 of the Major Facilitator Superfamily of transporters; ...
20-450
4.54e-34
Monocarboxylate transporter 7 of the Major Facilitator Superfamily of transporters; Monocarboxylate transporter 7 (MCT7) is also called Solute carrier family 16 member 6 (SLC16A6). Zebrafish MCT7 is required for hepatocyte secretion of ketone bodies during fasting; it has been shown to be a selective transporter of the major ketone body beta-hydroxybutyrate, whose abundance is increased during fasting. MCT7 is expressed in the brain, pancreas, muscle, and prostate. It belongs to the Monocarboxylate transporter (MCT) 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: 340980 [Multi-domain] Cd Length: 363 Bit Score: 131.41 E-value: 4.54e-34
Monocarboxylate transporter 6 of the Major Facilitator Superfamily of transporters; ...
20-450
5.75e-32
Monocarboxylate transporter 6 of the Major Facilitator Superfamily of transporters; Monocarboxylate transporter 6 (MCT6) is also called Solute carrier family 16 member 5 (SLC16A5). MCT6 has been shown to transport bumetanide, nateglinide, probenecid, and prostaglandin F2a, but not L-lactic acid, in a pH- and membrane potential-dependent manner. It may be involved in the disposition and absorption of various drugs. MCT6 is expressed in the kidney, muscle, brain, heart, pancreas, prostate, lung, and placenta. It belongs to the Monocarboxylate transporter (MCT) 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: 340983 [Multi-domain] Cd Length: 364 Bit Score: 125.65 E-value: 5.75e-32
Monocarboxylate transporter 2 of the Major Facilitator Superfamily of transporters; ...
20-450
8.42e-30
Monocarboxylate transporter 2 of the Major Facilitator Superfamily of transporters; Monocarboxylate transporter 2 (MCT2) is also called Solute carrier family 16 member 7 (SLC16A7). It is a proton-coupled transporter that facilitates the transport across the plasma membrane of monocarboxylates such as lactate, pyruvate, branched-chain oxo acids derived from leucine, valine and isoleucine, and ketone bodies such as acetoacetate, beta-hydroxybutyrate and acetate. It transports pyruvate and lactate outside and inside of sperm and plays roles in the regulation of spermatogenesis. Genetic variation in MCT2 has functional and clinical relevance with male infertility. MCT2 is consistently overexpressed in prostate cancer (PCa) cells and its location at peroxisomes is associated with malignant transformation. MCT2 belongs to the Monocarboxylate transporter (MCT) 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: 340985 [Multi-domain] Cd Length: 367 Bit Score: 119.53 E-value: 8.42e-30
Monocarboxylate transporters 9 and 14, and similar proteins of the Major Facilitator ...
20-450
1.15e-28
Monocarboxylate transporters 9 and 14, and similar proteins of the Major Facilitator Superfamily of transporters; Monocarboxylate transporters 3 (MCT3) and 4 (MCT4) are also called Solute carrier family 16 members 8 (SLC16A8) and 3 (SLC16A3), respectively. They are proton-coupled transporters that facilitate the transport across the plasma membrane of monocarboxylates such as lactate, pyruvate, branched-chain oxo acids derived from leucine, valine and isoleucine, and ketone bodies such as acetoacetate, beta-hydroxybutyrate and acetate. MCT3 is preferentially expressed in the basolateral membrane of the retinal pigment epithelium and plays a role in pH and ion homeostasis of the outer retina by facilitating the transport of lactate and H(+) out of the retina. Mice deficient with MCT3 display altered visual function. MCT4 is highly expressed in tissues dependent on glycolysis, and it plays an important role in lactate efflux from cells. MCT4 is expressed in neurons and astrocytes; it has been found to play a role in neuroprotective mechanism of ischemic preconditioning in animals (in the gerbil) with transient cerebral ischemia. Increased MCT4 expression has also been correlated with worse prognosis across many cancer types. MCT3/4 belongs to the Monocarboxylate transporter (MCT) 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: 340988 [Multi-domain] Cd Length: 368 Bit Score: 116.37 E-value: 1.15e-28
Monocarboxylate transporters 8 and 10, and similar proteins of the Major Facilitator ...
20-454
2.96e-28
Monocarboxylate transporters 8 and 10, and similar proteins of the Major Facilitator Superfamily of transporters; Monocarboxylate transporters 8 (MCT8) and 10 (MCT10) are transporters which stimulate the cellular uptake of thyroid hormones such as thyroxine (T4), triiodothyronine (T3), reverse triiodothyronine (rT3) and diidothyronine (T2). MCT has a preference for T3 and is also a sodium-independent transporter that mediates the uptake or efflux of aromatic acids such as Phe, Tyr, and Trp, as well as L-3,4-di-hydroxy-phenylalanine. MCT8/10 and similar proteins belong to the Monocarboxylate transporter (MCT) 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: 340978 [Multi-domain] Cd Length: 400 Bit Score: 115.70 E-value: 2.96e-28
Monocarboxylate transporter 1 of the Major Facilitator Superfamily of transporters; ...
20-449
1.10e-26
Monocarboxylate transporter 1 of the Major Facilitator Superfamily of transporters; Monocarboxylate transporter 1 (MCT1) is also called Solute carrier family 16 member 1 (SLC16A1). It is a proton-coupled transporter that facilitates the transport across the plasma membrane of monocarboxylates such as lactate, pyruvate, branched-chain oxo acids derived from leucine, valine and isoleucine, and ketone bodies such as acetoacetate, beta-hydroxybutyrate and acetate. It is widely expressed in many tissues its main function is to transport lactate into the cell. MCT1 deficiency has been identified as a cause of profound ketoacidosis, a potentially lethal condition caused by the imbalance between hepatic production and extrahepatic utilization of ketone bodies. This suggests that MCT1-mediated ketone-body transport is crucial in maintaining acid-base balance. MCT1 belongs to the Monocarboxylate transporter (MCT) 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: 340984 [Multi-domain] Cd Length: 374 Bit Score: 110.74 E-value: 1.10e-26
Monocarboxylate transporter 14 of the Major Facilitator Superfamily of transporters; ...
20-196
1.10e-26
Monocarboxylate transporter 14 of the Major Facilitator Superfamily of transporters; Monocarboxylate transporter 14 (MCT14) is also called Solute carrier family 16 member 14 (SLC16A14). It is an orphan transporter expressed in the brain, heart, muscle, ovary, prostate, breast, lung, pancreas, liver, spleen, and thymus. It may function as a neuronal aromatic-amino-acid transporter. MCT14 belongs to the Monocarboxylate transporter (MCT) 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: 340987 [Multi-domain] Cd Length: 361 Bit Score: 110.69 E-value: 1.10e-26
Monocarboxylate transporter 10 of the Major Facilitator Superfamily of transporters; ...
20-450
2.85e-20
Monocarboxylate transporter 10 of the Major Facilitator Superfamily of transporters; Monocarboxylate transporter 10 (MCT10) is also called Solute carrier family 16 member 10 (SLC16A10). In addition, human MCT10 is also called T-type amino acid transporter 1 (TAT1). MCT10 is a sodium-independent transporter that mediates the uptake or efflux of aromatic acids such as Phe, Tyr, and Trp, as well as L-3,4-di-hydroxy-phenylalanine. It is also a thyroid hormone transporter with preference for triiodothyronine (T3). MCT10 is expressed in intestine, kidney, liver, muscle, and placenta, and appears predominantly localized in the basolateral membrane. It belongs to the Monocarboxylate transporter (MCT) 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: 341022 [Multi-domain] Cd Length: 395 Bit Score: 92.55 E-value: 2.85e-20
Monocarboxylate transporter 9 of the Major Facilitator Superfamily of transporters; ...
20-449
6.82e-19
Monocarboxylate transporter 9 of the Major Facilitator Superfamily of transporters; Monocarboxylate transporter 9 (MCT9) is also called Solute carrier family 16 member 9 (SLC16A9). It is an orphan transporter that is expressed in a number of tissues including intestine and kidney. A missense variant of MCT9 (K258T) is associated with significant increase in susceptibility to renal overload (ROL) gout with intestinal urate underexcretion. This suggests that MCT9 may have a role in intestinal urate excretion; it is possible that it transports urate. MCT9 belongs to the Monocarboxylate transporter (MCT) 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: 340986 [Multi-domain] Cd Length: 361 Bit Score: 87.95 E-value: 6.82e-19
MFS-type transporter YcxA and similar proteins of the Major Facilitator Superfamily of ...
20-415
2.21e-15
MFS-type transporter YcxA and similar proteins of the Major Facilitator Superfamily of transporters; This group is composed of uncharacterized bacterial MFS-type transporters including Bacillus subtilis YcxA and YbfB. YcxA has been shown to facilitate the export of surfactin in B. subtilis. The YcxA-like group belongs to the Monocarboxylate transporter -like (MCT-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: 340913 [Multi-domain] Cd Length: 386 Bit Score: 77.70 E-value: 2.21e-15
Monocarboxylate transporter 8 of the Major Facilitator Superfamily of transporters; ...
20-164
9.57e-15
Monocarboxylate transporter 8 of the Major Facilitator Superfamily of transporters; Monocarboxylate transporter 8 (MCT8) is also called Solute carrier family 16 member 2 (SLC16A2) or X-linked PEST-containing transporter. MCT8 is a very active and specific thyroid hormone transporter which stimulates the cellular uptake of thyroxine (T4), triiodothyronine (T3), reverse triiodothyronine (rT3) and diidothyronine (T2). Inactivating mutations in SLC16A2, the gene that encodes MCT8, lead to an X-linked syndrome with severe neurological impairment known as Allan-Herndon-Dudley syndrome (AHDS). AHDS is characterized by congenital hypotonia that progresses to spasticity with severe psychomotor delays, spastic paraplegia and dystonic movements, global developmental delay, and profound intellectual disability. MCT8 belongs to the Monocarboxylate transporter (MCT) 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: 341023 [Multi-domain] Cd Length: 367 Bit Score: 75.60 E-value: 9.57e-15
Monocarboxylate transporter (MCT) family and similar transporters of the Major Facilitator ...
20-213
2.31e-14
Monocarboxylate transporter (MCT) family and similar transporters of the Major Facilitator Superfamily; The group is composed of the Monocarboxylate transporter (MCT) family in animals and similar transporters from fungi, plants, archaea, and bacteria. MCT is also called Solute carrier family 16 (SLC16 or SLC16A). It is composed of 14 members, MCT1-14. MCTs play an integral role in cellular metabolism via lactate transport and have been implicated in metabolic synergy in tumors. MCTs have been found to facilitate the transport across the plasma membrane not only of monocarboxylates (MCT1-4), but also thyroid hormones (MCT8/10), and aromatic acids (MCT10). Yeast MCT homologous (Mch) proteins are not involved in the uptake of monocarboxylates; their substrates are not known. The MCT-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: 340872 [Multi-domain] Cd Length: 385 Bit Score: 74.37 E-value: 2.31e-14
Oxalate:formate antiporter (OFA) and similar proteins of the Major Facilitator Superfamily of ...
21-453
1.89e-12
Oxalate:formate antiporter (OFA) and similar proteins of the Major Facilitator Superfamily of transporters; This subfamily is composed of Oxalobacter formigenes oxalate:formate antiporter (OFA or OxlT) and similar proteins. O. formigenes, a commensal found in the gut of animals and humans, plays an important role in clearing dietary oxalate from the intestinal tract, which is carried out by OFA/OxlT, an anion transporter that facilitates the exchange of divalent oxalate with monovalent formate, the product of oxalate decarboxylation. This exchange generates an electrochemical proton gradient and is the source of energy for ATP synthesis in this cell. The OFA-like subfamily belongs to the Monocarboxylate transporter -like (MCT-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: 340911 [Multi-domain] Cd Length: 389 Bit Score: 68.79 E-value: 1.89e-12
bacterial MdtG-like and eukaryotic solute carrier 18 (SLC18) family of the Major Facilitator ...
28-454
1.82e-10
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: 62.59 E-value: 1.82e-10
Major Facilitator Superfamily; The Major Facilitator Superfamily (MFS) is a large and diverse ...
27-450
1.51e-08
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: 56.28 E-value: 1.51e-08
Major Facilitator Superfamily; The Major Facilitator Superfamily (MFS) is a large and diverse ...
312-454
3.71e-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: 52.04 E-value: 3.71e-07
Purine ribonucleoside efflux pump NepI and similar transporters of the Major Facilitator ...
331-450
4.27e-07
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: 51.78 E-value: 4.27e-07
bacterial MdtG-like and eukaryotic solute carrier 18 (SLC18) family of the Major Facilitator ...
27-186
1.59e-06
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: 50.27 E-value: 1.59e-06
Mycobacterium tuberculosis uncharacterized MFS-type transporter MT3072 and similar ...
300-449
2.00e-06
Mycobacterium tuberculosis uncharacterized MFS-type transporter MT3072 and similar transporters of the Major Facilitator Superfamily; This family includes the Mycobacterium tuberculosis uncharacterized MFS-type transporter MT3072. 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: 341028 [Multi-domain] Cd Length: 378 Bit Score: 49.93 E-value: 2.00e-06
MFS family permease, includes anhydromuropeptide permease AmpG [Carbohydrate transport and ...
41-185
5.54e-06
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: 47.88 E-value: 5.54e-06
Escherichia coli YfcJ, YhhS, and similar transporters of the Major Facilitator Superfamily; ...
314-454
4.27e-05
Escherichia coli YfcJ, YhhS, and similar transporters of the Major Facilitator Superfamily; This subfamily is composed of Escherichia coli membrane proteins, YfcJ and YhhS, Bacillus subtilis uncharacterized MFS-type transporter YwoG, and similar proteins. YfcJ and YhhS are putative arabinose efflux transporters. YhhS has been implicated glyphosate resistance. YfcJ-like arabinose efflux transporters belong to the bacterial MdtG-like and eukaryotic solute carrier 18 (SLC18) family of the Major Facilitator Superfamily (MFS) of transporters. MFS proteins are thought to function through a single substrate binding site, alternating-access mechanism involving a rocker-switch type of movement.
Pssm-ID: 341042 [Multi-domain] Cd Length: 367 Bit Score: 45.66 E-value: 4.27e-05
Hexuronate transporter, Glucarate transporter, and similar transporters of the Major ...
48-184
1.03e-04
Hexuronate transporter, Glucarate transporter, and similar transporters of the Major Facilitator Superfamily; This family is composed of predominantly bacterial transporters for hexuronate (ExuT), glucarate (GudP), galactarate (GarP), and galactonate (DgoT). They mediate the uptake of these compounds into the cell. They belong 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: 340877 [Multi-domain] Cd Length: 358 Bit Score: 44.48 E-value: 1.03e-04
MFS family permease, includes anhydromuropeptide permease AmpG [Carbohydrate transport and ...
312-447
1.10e-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: 44.03 E-value: 1.10e-04
Organophosphate:Pi antiporter/Solute Carrier family 37 of the Major Facilitator Superfamily of ...
39-186
3.18e-04
Organophosphate:Pi antiporter/Solute Carrier family 37 of the Major Facilitator Superfamily of transporters; Organophosphate:Pi antiporters (OPA) are integral membrane proteins responsible for the transport of specific organophosphates or sugar phosphates across biological membranes with the simultaneous translocation of inorganic phosphate into the opposite direction. The OPA family is also called solute carrier family 37 (SLC37) in vertebrates. Members include glucose-6-phosphate (Glc6P) transporter (also called translocase or exchanger), glycerol-3-phosphate permease, 2-phosphonopropionate transporter, phosphoglycerate transporter, as well as membrane sensor protein UhpC from Escherichia coli. UhpC is both a sensor and a transport protein; it recognizes external Glc6P and induces transport by UhpT, and it can also transport Glc6P. Vertebrates contain four SLC37 or sugar-phosphate exchange (SPX) proteins: SLC37A1 (SPX1), SLC37A2 (SPX2), SLC37A3 (SPX3), and SLC37AA4 (SPX4). The OPA/SLC37 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: 340870 [Multi-domain] Cd Length: 364 Bit Score: 43.03 E-value: 3.18e-04
Major Facilitator Superfamily; The Major Facilitator Superfamily (MFS) is a large and diverse ...
3-186
9.27e-04
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: 41.26 E-value: 9.27e-04
Eukaryotic Solute carrier 46 (SLC46) family, Bacterial Tetracycline resistance proteins, and similar proteins of the Major Facilitator Superfamily of transporters; This family is composed of the eukaryotic proteins MFSD9, MFSD10, MFSD14, and SLC46 family proteins, as well as bacterial multidrug resistance (MDR) transporters such as tetracycline resistance protein TetA and multidrug resistance protein MdtG. 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. TetA proteins confer resistance to tetracycline while MdtG confers resistance to fosfomycin and deoxycholate. The Solute carrier 46 (SLC46) family is composed of three vertebrate members (SLC46A1, SLC46A2, and SLC46A3), the best-studied of which is SLC46A1, which functions both as an intestinal proton-coupled high-affinity folate transporter involved in the absorption of folates and as an intestinal heme transporter which mediates heme uptake. MFSD10 facilitates the uptake of organic anions such as some non-steroidal anti-inflammatory drugs (NSAIDs) and confers resistance to such NSAIDs. The SLC46/TetA-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: 340888 [Multi-domain] Cd Length: 349 Bit Score: 41.02 E-value: 1.23e-03
Solute carrier family 22 member 18 of the Major Facilitator Superfamily of transporters; ...
27-195
1.29e-03
Solute carrier family 22 member 18 of the Major Facilitator Superfamily of transporters; Solute carrier family 22 member 18 (SLC22A18) is also called Beckwith-Wiedemann syndrome chromosomal region 1 candidate gene A protein (BWR1A or BWSCR1A), efflux transporter-like protein, imprinted multi-membrane-spanning polyspecific transporter-related protein 1 (IMPT1), organic cation transporter-like protein 2 (ORCTL2), or tumor-suppressing subchromosomal transferable fragment candidate gene 5 protein (TSSC5). It is localized at the apical membrane surface of renal proximal tubules and may act as an organic cation/proton antiporter. It functions as a tumor suppressor in several cancer types including glioblastoma and colorectal cancer. SLC22A18 belongs to the Eukaryotic Solute carrier 46 (SLC46)/Bacterial Tetracycline resistance (TetA) -like (SLC46/TetA-like) family of the Major Facilitator Superfamily (MFS) of transporters. MFS proteins are thought to function through a single substrate binding site, alternating-access mechanism involving a rocker-switch type of movement.
Pssm-ID: 340889 [Multi-domain] Cd Length: 382 Bit Score: 41.05 E-value: 1.29e-03
Eukaryotic Solute carrier 46 (SLC46) family, Bacterial Tetracycline resistance proteins, and similar proteins of the Major Facilitator Superfamily of transporters; This family is composed of the eukaryotic proteins MFSD9, MFSD10, MFSD14, and SLC46 family proteins, as well as bacterial multidrug resistance (MDR) transporters such as tetracycline resistance protein TetA and multidrug resistance protein MdtG. 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. TetA proteins confer resistance to tetracycline while MdtG confers resistance to fosfomycin and deoxycholate. The Solute carrier 46 (SLC46) family is composed of three vertebrate members (SLC46A1, SLC46A2, and SLC46A3), the best-studied of which is SLC46A1, which functions both as an intestinal proton-coupled high-affinity folate transporter involved in the absorption of folates and as an intestinal heme transporter which mediates heme uptake. MFSD10 facilitates the uptake of organic anions such as some non-steroidal anti-inflammatory drugs (NSAIDs) and confers resistance to such NSAIDs. The SLC46/TetA-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: 340888 [Multi-domain] Cd Length: 349 Bit Score: 38.71 E-value: 6.25e-03
Metazoan Synaptic vesicle glycoprotein 2 (SV2) and related small molecule transporters of the ...
23-186
9.60e-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: 37.97 E-value: 9.60e-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.
of the residues that compose this conserved feature have been mapped to the query sequence.
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