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 ...
31-440
4.68e-39
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 cd17318:
Pssm-ID: 475125 [Multi-domain] Cd Length: 389 Bit Score: 145.07 E-value: 4.68e-39
Solute carrier 17 (SLC17) family of the Major Facilitator Superfamily of transporters; The ...
31-440
4.68e-39
Solute carrier 17 (SLC17) family of the Major Facilitator Superfamily of transporters; The Solute carrier 17 (SLC17) family is primarily involved in the transport of organic anions. There are nime human proteins belonging to this family including: the type I phosphate transporters (SLC17A1-4) that were initially identified as sodium-dependent inorganic phosphate (Pi) transporters but are now known to be involved in tha transport of organic anions; lysosomal acidic sugar transporter (SLC17A5 or sialin), vesicular glutamate transporters (VGluT1#3 or SLC17A7, SLC17A6, and SLC17A8, respectively), and a vesicular nucleotide transporter (VNUT or SLC17A9). SLC17A1 and SLC17A3 have roles in the transport of urate and para-aminohippurate, respectively. The SLC17 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: 340876 [Multi-domain] Cd Length: 389 Bit Score: 145.07 E-value: 4.68e-39
Solute carrier 17 (SLC17) family of the Major Facilitator Superfamily of transporters; The ...
31-440
4.68e-39
Solute carrier 17 (SLC17) family of the Major Facilitator Superfamily of transporters; The Solute carrier 17 (SLC17) family is primarily involved in the transport of organic anions. There are nime human proteins belonging to this family including: the type I phosphate transporters (SLC17A1-4) that were initially identified as sodium-dependent inorganic phosphate (Pi) transporters but are now known to be involved in tha transport of organic anions; lysosomal acidic sugar transporter (SLC17A5 or sialin), vesicular glutamate transporters (VGluT1#3 or SLC17A7, SLC17A6, and SLC17A8, respectively), and a vesicular nucleotide transporter (VNUT or SLC17A9). SLC17A1 and SLC17A3 have roles in the transport of urate and para-aminohippurate, respectively. The SLC17 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: 340876 [Multi-domain] Cd Length: 389 Bit Score: 145.07 E-value: 4.68e-39
Solute carrier family 17 member 5 (also called sialin) of the Major Facilitator Superfamily of ...
112-432
4.34e-24
Solute carrier family 17 member 5 (also called sialin) of the Major Facilitator Superfamily of transporters; Solute carrier family 17 member 5 (SLC17A5) is also called sialin, H(+)/nitrate cotransporter, H(+)/sialic acid cotransporter (AST), membrane glycoprotein HP59, or vesicular H(+)/aspartate-glutamate cotransporter. It transports glucuronic acid and free sialic acid out of the lysosome after its cleavage from sialoglycoconjugates, which is required for normal CNS myelination. It also mediates the membrane potential-dependent uptake of aspartate and glutamate into synaptic vesicles and synaptic-like microvesicles. In the plasma membrane, it functions as a nitrate transporter. Recessive mutations in the SLC17A5 gene cause the allelic disorders, Infantile sialic acid storage disease (ISSD) and Salla disease (a predominantly neurological disorder). SLC17A5 belongs to the Solute carrier 17 (SLC17) 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: 340939 [Multi-domain] Cd Length: 397 Bit Score: 103.32 E-value: 4.34e-24
Solute carrier family 17 members 6, 7, and 8 (also called Vesicular glutamate transporters) of ...
111-432
9.44e-22
Solute carrier family 17 members 6, 7, and 8 (also called Vesicular glutamate transporters) of the Major Facilitator Superfamily of transporters; This subfamily is composed of solute carrier family 17 member 6 (SLC17A6), SLC17A7, SLC17A8, and similar proteins. SLC17A6 is also called vesicular glutamate transporter 2 (VGluT2), differentiation-associated BNPI, or differentiation-associated Na(+)-dependent inorganic phosphate cotransporter. SLC17A7 is also called VGluT1 or brain-specific Na(+)-dependent inorganic phosphate cotransporter. SLC17A8 is also called VGluT3. They mediate the uptake of glutamate into synaptic vesicles at presynaptic nerve terminals of excitatory neural cells, and may also mediate the transport of inorganic phosphate. VGluTs are also expressed and localized in various secretory vesicles in non-neuronal peripheral organelles such as hormone-containing secretory granules in endocrine cells, and thus, also act as metabolic regulators. The VGluT subfamily belongs to the Solute carrier 17 (SLC17) 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: 340940 [Multi-domain] Cd Length: 380 Bit Score: 96.25 E-value: 9.44e-22
Hexuronate transporter, Glucarate transporter, and similar transporters of the Major ...
68-354
1.60e-21
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: 95.33 E-value: 1.60e-21
Major Facilitator Superfamily; The Major Facilitator Superfamily (MFS) is a large and diverse ...
74-436
1.23e-15
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: 78.24 E-value: 1.23e-15
bacterial MdtG-like and eukaryotic solute carrier 18 (SLC18) family of the Major Facilitator ...
74-371
1.25e-15
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: 78.00 E-value: 1.25e-15
Purine ribonucleoside efflux pump NepI and similar transporters of the Major Facilitator ...
75-383
3.00e-12
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: 67.57 E-value: 3.00e-12
Solute carrier family 17 member 9 and similar proteins of the Major Facilitator Superfamily of ...
74-370
4.34e-11
Solute carrier family 17 member 9 and similar proteins of the Major Facilitator Superfamily of transporters; This subfamily includes solute carrier family 17 member 9 (SLC17A9) and similar proteins including plant inorganic phosphate transporters (PHT4) that are also probably anion transporters. SLC17A9, also called vesicular nucleotide transporter (VNUT), is involved in vesicular storage and exocytosis of ATP. It facilitates the accumulation of ATP and other nucleotides in secretory vesicles such as adrenal chromaffin granules and synaptic vesicles. It also functions as a lysosomal ATP transporter and regulates cell viability. Plant PHT4 family transporters mediate the transport of inorganic phosphate and may also transport organic anions. The Arabidopsis protein AtPHT4;4 is a chloroplast-localized ascorbate transporter. PHT4 proteins show differential expression that suggests specialized functions. The SLC17A9-like subfamily belongs to the Solute carrier 17 (SLC17) 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: 340938 [Multi-domain] Cd Length: 361 Bit Score: 64.11 E-value: 4.34e-11
Putative arabinose efflux permease family transporters of the Major Facilitator Superfamily; ...
79-354
2.87e-10
Putative arabinose efflux permease family transporters of the Major Facilitator Superfamily; This family includes a group of putative arabinose efflux permease family transporters, such as alpha proteobacterium quinolone resistance protein NorA (characterized Staphylococcus aureus Quinolone resistance protein NorA belongs to a different group), Desulfovibrio dechloracetivorans bacillibactin exporter, Vibrio aerogenes antiseptic resistance protein. The biological function of those transporters remain unclear. 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: 341026 [Multi-domain] Cd Length: 374 Bit Score: 61.82 E-value: 2.87e-10
MFS family permease, includes anhydromuropeptide permease AmpG [Carbohydrate transport and ...
23-218
4.74e-08
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: 54.43 E-value: 4.74e-08
Methylenomycin A resistance protein (also called MMR peptide) and similar multidrug resistance ...
74-377
2.39e-07
Methylenomycin A resistance protein (also called MMR peptide) and similar multidrug resistance (MDR) transporters of the Major Facilitator Superfamily; This family is composed of bacterial, fungal, and archaeal multidrug resistance (MDR) transporters including several proteins from Bacilli such as methylenomycin A resistance protein (also called MMR peptide), tetracycline resistance protein (TetB), and lincomycin resistance protein LmrB, as well as fungal proteins such as vacuolar basic amino acid transporters, which are involved in the transport into vacuoles of the basic amino acids histidine, lysine, and arginine in Saccharomyces cerevisiae, and aminotriazole/azole resistance proteins. 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. For example, MMR confers resistance to the epoxide antibiotic methylenomycin while TetB resistance to tetracycline by an active tetracycline efflux. MMR-like MDR transporters 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: 340879 [Multi-domain] Cd Length: 370 Bit Score: 52.56 E-value: 2.39e-07
Bacillus subtilis multidrug efflux protein YfmO and similar transporters of the Major ...
74-373
1.50e-06
Bacillus subtilis multidrug efflux protein YfmO and similar transporters of the Major Facilitator Superfamily; This family is composed of Bacillus subtilis multidrug efflux protein YfmO, bacillibactin exporter YmfD/YmfE, uncharacterized MFS-type transporter YvmA, and similar proteins. YfmO acts to efflux copper or a copper complex, and could contribute to copper resistance. YmfD/YmfE is involved in secretion of bacillibactin. The YfmO-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: 341027 [Multi-domain] Cd Length: 374 Bit Score: 50.26 E-value: 1.50e-06
Organophosphate:Pi antiporter/Solute Carrier family 37 of the Major Facilitator Superfamily of ...
101-436
4.29e-06
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: 48.81 E-value: 4.29e-06
Cis,cis-muconate transport protein and similar proteins of the Major Facilitator Superfamily; ...
70-322
5.05e-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: 48.45 E-value: 5.05e-06
Metazoan Synaptic vesicle glycoprotein 2 (SV2) and related small molecule transporters of the ...
67-358
3.37e-05
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: 45.67 E-value: 3.37e-05
Bacillus subtilis lincomycin resistance protein (LmrB) and similar multidrug resistance (MDR) ...
74-356
1.33e-04
Bacillus subtilis lincomycin resistance protein (LmrB) and similar multidrug resistance (MDR) transporters of the Major Facilitator Superfamily; This subfamily is composed of multidrug resistance (MDR) transporters including Bacillus subtilis lincomycin resistance protein LmrB, and several proteins from Escherichia coli such as the putative MDR transporters EmrB, MdtD, and YieQ. 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. For example, MMR confers resistance to the epoxide antibiotic methylenomycin. This subfamily belongs to the Methylenomycin A resistance protein (also called MMR peptide) and similar multidrug resistance (MDR) transporters (MMR-like MDR transporter) 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: 341046 [Multi-domain] Cd Length: 380 Bit Score: 44.10 E-value: 1.33e-04
Glycerol-3-Phosphate Transporter of the Major Facilitator Superfamily of transporters; ...
107-361
3.61e-04
Glycerol-3-Phosphate Transporter of the Major Facilitator Superfamily of transporters; Glycerol-3-Phosphate Transporter (also called GlpT or G-3-P permease) is responsible for glycerol-3-phosphate uptake. It is part of the Organophosphate:Pi antiporter (OPA) family of 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 GlpT 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: 340903 [Multi-domain] Cd Length: 411 Bit Score: 42.61 E-value: 3.61e-04
MFS-type transporter YcxA and similar proteins of the Major Facilitator Superfamily of ...
99-377
5.37e-04
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: 42.26 E-value: 5.37e-04
YcaD and similar transporters of the Major Facilitator Superfamily; This family is composed of ...
73-237
5.48e-04
YcaD and similar transporters of the Major Facilitator Superfamily; This family is composed of Escherichia coli MFS-type transporter YcaD, Bacillus subtilis MFS-type transporter YfkF, and similar proteins. They are uncharacterized transporters belonging 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: 341030 [Multi-domain] Cd Length: 360 Bit Score: 42.16 E-value: 5.48e-04
Multidrug transporter MdfA and similar multidrug resistance (MDR) transporters of the Major ...
74-373
5.51e-04
Multidrug transporter MdfA and similar multidrug resistance (MDR) transporters of the Major Facilitator Superfamily; This family is composed of bacterial multidrug resistance (MDR) transporters including several proteins from Escherichia coli such as MdfA (also called chloramphenicol resistance pump Cmr), EmrD, MdtM, MdtL, bicyclomycin resistance protein (also called sulfonamide resistance protein), and the uncharacterized inner membrane transport protein YdhC. EmrD is a proton-dependent secondary transporter, first identified as an efflux pump for uncouplers of oxidative phosphorylation. It expels a range of drug molecules and amphipathic compounds across the inner membrane of E. coli. Similarly, MdfA is a secondary multidrug transporter that exports a broad spectrum of structurally and electrically dissimilar toxic compounds. These MDR transporters are drug/H+ antiporters (DHA) belonging 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: 340878 [Multi-domain] Cd Length: 379 Bit Score: 42.18 E-value: 5.51e-04
bacterial MdtG-like and eukaryotic solute carrier 18 (SLC18) family of the Major Facilitator ...
74-219
9.59e-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: 41.41 E-value: 9.59e-04
Macrolide efflux protein A and similar proteins of the Major Facilitator Superfamily of ...
70-218
9.71e-04
Macrolide efflux protein A and similar proteins of the Major Facilitator Superfamily of transporters; This family is composed of Streptococcus pyogenes macrolide efflux protein A (MefA) and similar transporters, many of which remain uncharacterized. Some members may be multidrug resistance (MDR) transporters, which are drug/H+ antiporters (DHAs) that mediate the efflux of a variety of drugs and toxic compounds, conferring resistance to these compounds. MefA confers resistance to 14-membered macrolides including erythromycin and to 15-membered macrolides. It functions as an efflux pump to regulate intracellular macrolide levels. The MefA-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: 340863 [Multi-domain] Cd Length: 383 Bit Score: 41.45 E-value: 9.71e-04
4-hydroxybenzoate transporter PcaK and similar transporters of the Major Facilitator ...
70-217
1.18e-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: 41.03 E-value: 1.18e-03
Salmonella enterica Na+/melibiose symporter MelB and similar transporters of the Major ...
70-152
1.45e-03
Salmonella enterica Na+/melibiose symporter MelB and similar transporters of the Major Facilitator Superfamily; This family is composed of Salmonella enterica Na+/melibiose symporter MelB, Major Facilitator Superfamily domain-containing proteins, MFSD2 and MFSD12, and other sugar transporters. MelB catalyzes the electrogenic symport of galactosides with Na+, Li+ or H+. The MFSD2 subfamily is composed of two vertebrate members, MFSD2A and MFSD2B. MFSD2A is more commonly called sodium-dependent lysophosphatidylcholine symporter 1 (NLS1). It is an LPC symporter that plays an essential role for blood-brain barrier formation and function. Inactivating mutations in MFSD2A cause a lethal microcephaly syndrome. MFSD2B is a potential risk or protect factor in the prognosis of lung adenocarcinoma. MelB-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: 340890 [Multi-domain] Cd Length: 424 Bit Score: 40.67 E-value: 1.45e-03
Major Facilitator Superfamily; The Major Facilitator Superfamily (MFS) is a large and diverse ...
79-216
2.00e-03
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: 40.10 E-value: 2.00e-03
Glucose transporter (GLUT) types 6 and 8, Class 3 GLUTs, and similar transporters of the Major ...
34-179
3.34e-03
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: 39.48 E-value: 3.34e-03
Class 1 and Class 2 Glucose transporters (GLUTs) of the Major Facilitator Superfamily; This ...
74-225
5.76e-03
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: 38.78 E-value: 5.76e-03
Solute carrier family 45 and similar sugar transporters of the Major Facilitator Superfamily ...
20-220
9.93e-03
Solute carrier family 45 and similar sugar transporters of the Major Facilitator Superfamily of transporters; This group includes the solute carrier 45 (SLC45) family as well as plant sucrose transporters (SUCs or SUTs) and similar proteins such as Schizosaccharomyces pombe general alpha-glucoside permease. the SLC45 family is composed of four (A1-A4) vertebrate proteins as well as related insect proteins such as Drosophila sucrose transporter SCRT or Slc45-1. Members of this group transport sucrose and other sugars like maltose into the cell, with the concomitant uptake of protons (symport system). Plant sucrose transporters are crucial to carbon partitioning, playing a key role in phloem loading/unloading. They play a key role in loading and unloading of sucrose into the phloem and as a result, they control sucrose distribution throughout the whole plant and drive the osmotic flow system in the phloem. They also play a role in the exchange of sucrose between beneficial symbionts (mycorrhiza and Rhizobium) as well as pathogens such as nematodes and parasitic fungi. There are nine sucrose transporter genes in Arabidopsis and five in rice. Vertebrate SLC45 family proteins have been implicated in the regulation of glucose homoeostasis in the brain (SLC45A1), with skin and hair pigmentation (SLC45A2), and with prostate cancer and myelination (SLC45A3). Mutations in SLC45A2, also called MATP (membrane-associated transporter protein) or melanoma antigen AIM1, cause oculocutaneous albinism type 4 (OCA4), an autosomal recessive disorder of melanin biosynthesis that results in congenital hypopigmentation of ocular and cutaneous tissues. The SLC45 family and related sugar transporters 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: 340871 [Multi-domain] Cd Length: 421 Bit Score: 37.99 E-value: 9.93e-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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of your query sequence and the protein sequences used to curate the domain model,
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The thumbnail image, if present, provides an approximate view of the feature's location in 3 dimensions.
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Functional characterization of the conserved domain architecture found on the query.
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This image shows a graphical summary of conserved domains identified on the query sequence.
The Show Concise/Full Display button at the top of the page can be used to select the desired level of detail: only top scoring hits
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Domains are color coded according to superfamilies
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if a domain or superfamily has been annotated with functional sites (conserved features),
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click on the bars or triangles to view your query sequence embedded in a multiple sequence alignment of the proteins used to develop the corresponding domain model.
The table lists conserved domains identified on the query sequence. Click on the plus sign (+) on the left to display full descriptions, alignments, and scores.
Click on the domain model's accession number to view the multiple sequence alignment of the proteins used to develop the corresponding domain model.
To view your query sequence embedded in that multiple sequence alignment, click on the colored bars in the Graphical Summary portion of the search results page,
or click on the triangles, if present, that represent functional sites (conserved features)
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Concise Display shows only the best scoring domain model, in each hit category listed below except non-specific hits, for each region on the query sequence.
(labeled illustration) Standard Display shows only the best scoring domain model from each source, in each hit category listed below for each region on the query sequence.
(labeled illustration) Full Display shows all domain models, in each hit category below, that meet or exceed the RPS-BLAST threshold for statistical significance.
(labeled illustration) Four types of hits can be shown, as available,
for each region on the query sequence:
specific hits meet or exceed a domain-specific e-value threshold
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and represent a very high confidence that the query sequence belongs to the same protein family as the sequences use to create the domain model
non-specific hits
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the domain superfamily to which the specific and non-specific hits belong
multi-domain models that were computationally detected and are likely to contain multiple single domains
Retrieve proteins that contain one or more of the domains present in the query sequence, using the Conserved Domain Architecture Retrieval Tool
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