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 ...
51-628
1.90e-71
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 cd17358:
Pssm-ID: 475125 [Multi-domain] Cd Length: 436 Bit Score: 239.01 E-value: 1.90e-71
Glucose transporter (GLUT) types 6 and 8, Class 3 GLUTs, and similar transporters of the Major ...
51-628
1.90e-71
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: 239.01 E-value: 1.90e-71
MFS transporter, sugar porter (SP) family; This model represent the sugar porter subfamily of ...
99-629
3.17e-29
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: 122.06 E-value: 3.17e-29
Glucose transporter (GLUT) types 6 and 8, Class 3 GLUTs, and similar transporters of the Major ...
51-628
1.90e-71
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: 239.01 E-value: 1.90e-71
MFS transporter, sugar porter (SP) family; This model represent the sugar porter subfamily of ...
99-629
3.17e-29
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: 122.06 E-value: 3.17e-29
Glucose transporter type 6, a Class 3 GLUT, of the Major Facilitator Superfamily of ...
51-381
1.32e-27
Glucose transporter type 6, a Class 3 GLUT, of the Major Facilitator Superfamily of transporters; Glucose transporter type 6 (GLUT6) is also called Solute carrier family 2, facilitated glucose transporter member 6 (SLC2A6). It is classified as a Class 3 GLUT protein, and is a facilitative glucose transporter that binds cytochalasin B with low affinity. It is found in the brain, spleen, and leucocytes. GLUT6 may function in oxalate secretion. SLC2A6 has been identified as an oxalate nephrolithiasis gene in mice; its deletion causes spontaneous calcium oxalate nephrolithiasis in the setting of hyperoxalaemia, hyperoxaluria, and nephrocalcinosis. 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: 340992 [Multi-domain] Cd Length: 417 Bit Score: 116.09 E-value: 1.32e-27
Glucose transporter type 8, a Class 3 GLUT, of the Major Facilitator Superfamily of ...
64-383
1.76e-19
Glucose transporter type 8, a Class 3 GLUT, of the Major Facilitator Superfamily of transporters; Glucose transporter type 8 (GLUT8) is also called Solute carrier family 2, facilitated glucose transporter member 8 (SLC2A8) or glucose transporter type X1 (GLUTX1). It is classified as a Class 3 GLUT protein and is an insulin-regulated facilitative glucose transporter predominantly expressed in testis and brain. It can also transport fructose and galactose. SLC2A8 knockout mice were viable, developed normally, and display only a very mild phenotype, including mild alterations in the brain (increased proliferation of hippocampal neurons), heart (impaired transmission of electrical wave through the atrium), and sperm cells (reduced number of motile sperm cells). 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: 340991 [Multi-domain] Cd Length: 416 Bit Score: 91.48 E-value: 1.76e-19
Class 1 and Class 2 Glucose transporters (GLUTs) of the Major Facilitator Superfamily; This ...
99-388
6.59e-17
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: 83.85 E-value: 6.59e-17
Glucose transporter (GLUT) types 10 and 12, Class 3 GLUTs, and similar transporters of the ...
526-629
7.35e-15
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: 77.01 E-value: 7.35e-15
Glucose transporters (GLUTs) and other similar sugar transporters of the Major Facilitator ...
60-620
4.08e-14
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: 74.53 E-value: 4.08e-14
H(+)-myo-inositol cotransporter and similar transporters of the Major Facilitator Superfamily; ...
530-620
2.90e-13
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: 71.92 E-value: 2.90e-13
D-xylose-proton symporter and similar transporters of the Major Facilitator Superfamily; This ...
531-620
4.14e-11
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: 65.28 E-value: 4.14e-11
Plant Polyol transporter family of the Major Facilitator Superfamily of transporters; The ...
541-629
7.93e-11
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: 64.34 E-value: 7.93e-11
Class 1 Glucose transporters (GLUTs) of the Major Facilitator Superfamily; GLUTs, also called ...
111-388
8.64e-11
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: 64.66 E-value: 8.64e-11
Plant Sugar transport protein subfamily of the Major Facilitator Superfamily of transporters; ...
526-620
1.72e-10
Plant Sugar transport protein subfamily of the Major Facilitator Superfamily of transporters; The plant Sugar transport protein (STP) subfamily includes STP1-STP14; they are also called hexose transporters. They mediate the active uptake of hexoses such as glucose, 3-O-methylglucose, fructose, xylose, mannose, galactose, fucose, 2-deoxyglucose and arabinose, by sugar/hydrogen symport. Several STP family transporters are expressed in a tissue-specific manner, or at specific developmental stages. STP1 is the member with the highest expression level of all members and high expression is detected in photosynthetic tissues, such as leaves and stems, while roots, siliques, and flowers show lower expression levels. It plays a major role in the uptake and response of Arabidopsis seeds and seedlings to sugars. The STP 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: 340919 [Multi-domain] Cd Length: 390 Bit Score: 63.42 E-value: 1.72e-10
Class 2 Glucose transporters (GLUTs) of the Major Facilitator Superfamily; GLUTs, also called ...
173-419
2.12e-08
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: 57.24 E-value: 2.12e-08
Glucose transporter type 10 (GLUT10), a Class 3 GLUT, of the Major Facilitator Superfamily of ...
534-629
2.27e-08
Glucose transporter type 10 (GLUT10), a Class 3 GLUT, of the Major Facilitator Superfamily of transporters; Glucose transporter type 10 (GLUT10) is also called Solute carrier family 2, facilitated glucose transporter member 10 (SLC2A10). It is classified as a Class 3 GLUT and is a facilitative glucose transporter that exhibits a wide tissue distribution. It is expressed in pancreas, placenta, heart, lung, liver, brain, fat, muscle, and kidney. GLUT10 facilitates the transport of dehydroascorbic acid (DHA), the oxidized form of vitamin C, into mitochondria, and also increases cellular uptake of DHA, which in turn protects cells against oxidative stress. Loss-of-function mutations in SLC2A10 cause arterial tortuosity syndrome (ATS), an autosomal recessive connective tissue disorder characterized by twisting and lengthening of the major arteries, hypermobility of the joints, and laxity of skin. The GLUT10 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: 340994 [Multi-domain] Cd Length: 376 Bit Score: 56.73 E-value: 2.27e-08
Fungal Hexose transporter subfamily of the Major Facilitator Superfamily of transporters and ...
552-633
1.06e-07
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: 54.95 E-value: 1.06e-07
Major Facilitator Superfamily; The Major Facilitator Superfamily (MFS) is a large and diverse ...
59-407
1.76e-06
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: 50.89 E-value: 1.76e-06
Glucose transporter type 12 (GLUT12), a Class 3 GLUT, of the Major Facilitator Superfamily of ...
530-629
1.42e-05
Glucose transporter type 12 (GLUT12), a Class 3 GLUT, of the Major Facilitator Superfamily of transporters; Glucose transporter type 12 (GLUT12) is also called Solute carrier family 2, facilitated glucose transporter member 12 (SLC2A12). It is a facilitative glucose transporter, classified as a Class 3 GLUT, and is expressed in the heart, skeletal muscle, prostate, and small intestine, and is highly upregulated in breast ductal cell carcinoma. It plays a role as a secondary insulin-sensitive glucose transporter in insulin-dependent tissues. The GLUT12 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: 340993 [Multi-domain] Cd Length: 376 Bit Score: 47.87 E-value: 1.42e-05
Metazoan Synaptic vesicle glycoprotein 2 (SV2) and related small molecule transporters of the ...
530-616
2.71e-04
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: 43.74 E-value: 2.71e-04
MFS family permease, includes anhydromuropeptide permease AmpG [Carbohydrate transport and ...
37-259
6.50e-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: 42.49 E-value: 6.50e-04
phosphate:H+ symporter; This model represents the phosphate uptake symporter subfamily of the ...
534-629
1.15e-03
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: 42.02 E-value: 1.15e-03
Cis,cis-muconate transport protein and similar proteins of the Major Facilitator Superfamily; ...
527-621
4.87e-03
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: 39.98 E-value: 4.87e-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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The thumbnail image, if present, provides an approximate view of the feature's location in 3 dimensions.
Click on the triangle for interactive 3D structure viewing options.
Functional characterization of the conserved domain architecture found on the query.
Click here to see more details.
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
(labeled illustration) or all hits
(labeled illustration).
Domains are color coded according to superfamilies
to which they have been assigned. Hits with scores that pass a domain-specific threshold
(specific hits) are drawn in bright colors.
Others (non-specific hits) and
superfamily placeholders are drawn in pastel colors.
if a domain or superfamily has been annotated with functional sites (conserved features),
they are mapped to the query sequence and indicated through sets of triangles
with the same color and shade of the domain or superfamily that provides the annotation. Mouse over the colored bars or triangles to see descriptions of the domains and features.
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)
mapped to the query sequence.
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
(illustrated example)
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
meet or exceed the RPS-BLAST threshold for statistical significance (default E-value cutoff of 0.01, or an E-value selected by user via the
advanced search options)
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
(CDART).
Modify your query to search against a different database and/or use advanced search options
