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 ...
17-417
2.47e-48
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 cd17394:
Pssm-ID: 475125 [Multi-domain] Cd Length: 401 Bit Score: 169.71 E-value: 2.47e-48
Fucose permease and similar proteins of the Major Facilitator Superfamily of transporters; ...
17-417
2.47e-48
Fucose permease and similar proteins of the Major Facilitator Superfamily of transporters; This subfamily is composed of L-fucose permease (also called L-fucose-proton symporter) and similar proteins such as glucose/galactose transporter and N-acetyl glucosamine transporter NagP. L-fucose permease facilitates the uptake of L-fucose across the boundary membrane with the concomitant transport of protons into the cell; it can also transport L-galactose and D-arabinose. Glucose/galactose transporter functions in the uptake of of glucose and galactose. The FucP-like subfamily belongs to the bacterial fucose permease, eukaryotic Major facilitator superfamily domain-containing protein 4 (FucP/MFSD4) 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: 340952 [Multi-domain] Cd Length: 401 Bit Score: 169.71 E-value: 2.47e-48
glucose/galactose transporter; This model describes the glucose/galactose transporter in ...
127-413
8.94e-34
glucose/galactose transporter; This model describes the glucose/galactose transporter in bacteria. This belongs to the larger facilitator superfamily. Disruption of the loci leads to the total loss of glucose or galactose uptake in E.coli. Putative transporters in other bacterial species were isolated by functional complementation, which restored it functional activity. [Transport and binding proteins, Carbohydrates, organic alcohols, and acids]
Pssm-ID: 273531 [Multi-domain] Cd Length: 310 Bit Score: 128.09 E-value: 8.94e-34
Fucose permease and similar proteins of the Major Facilitator Superfamily of transporters; ...
17-417
2.47e-48
Fucose permease and similar proteins of the Major Facilitator Superfamily of transporters; This subfamily is composed of L-fucose permease (also called L-fucose-proton symporter) and similar proteins such as glucose/galactose transporter and N-acetyl glucosamine transporter NagP. L-fucose permease facilitates the uptake of L-fucose across the boundary membrane with the concomitant transport of protons into the cell; it can also transport L-galactose and D-arabinose. Glucose/galactose transporter functions in the uptake of of glucose and galactose. The FucP-like subfamily belongs to the bacterial fucose permease, eukaryotic Major facilitator superfamily domain-containing protein 4 (FucP/MFSD4) 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: 340952 [Multi-domain] Cd Length: 401 Bit Score: 169.71 E-value: 2.47e-48
glucose/galactose transporter; This model describes the glucose/galactose transporter in ...
127-413
8.94e-34
glucose/galactose transporter; This model describes the glucose/galactose transporter in bacteria. This belongs to the larger facilitator superfamily. Disruption of the loci leads to the total loss of glucose or galactose uptake in E.coli. Putative transporters in other bacterial species were isolated by functional complementation, which restored it functional activity. [Transport and binding proteins, Carbohydrates, organic alcohols, and acids]
Pssm-ID: 273531 [Multi-domain] Cd Length: 310 Bit Score: 128.09 E-value: 8.94e-34
Bacterial fucose permease, eukaryotic Major facilitator superfamily domain-containing protein ...
251-390
4.87e-11
Bacterial fucose permease, eukaryotic Major facilitator superfamily domain-containing protein 4, and similar proteins; This family is composed of bacterial L-fucose permease (FucP), eukaryotic Major facilitator superfamily domain-containing protein 4 (MFSD4) proteins, and similar proteins. L-fucose permease facilitates the uptake of L-fucose across the boundary membrane with the concomitant transport of protons into the cell; it can also transport L-galactose and D-arabinose. The MFSD4 subfamily consists of two vertebrate members: MFSD4A and MFSD4B. The function of MFSD4A is unknown. MFSD4B is more commonly know as Sodium-dependent glucose transporter 1 (NaGLT1), a primary fructose transporter in rat renal brush-border membranes that also facilitates sodium-independent urea uptake. The FucP/MFSD4 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: 340891 [Multi-domain] Cd Length: 372 Bit Score: 63.88 E-value: 4.87e-11
Fosmidomycin resistance protein of the Major Facilitator Superfamily of transporters; ...
315-405
2.53e-03
Fosmidomycin resistance protein of the Major Facilitator Superfamily of transporters; Fosmidomycin resistance protein (FsR) confers resistance against fosmidomycin. It shows sequence similarity with the bacterial drug-export proteins that mediate resistance to tetracycline and chloramphenicol. This FsR 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: 341031 [Multi-domain] Cd Length: 365 Bit Score: 39.85 E-value: 2.53e-03
Major facilitator superfamily domain-containing protein 4; The Major facilitator superfamily ...
256-387
9.02e-03
Major facilitator superfamily domain-containing protein 4; The Major facilitator superfamily domain-containing protein 4 (MFSD4) subfamily consists of two vertebrate members: MFSD4A and MFSD4B. The function of MFSD4A is unknown. MFSD4B is more commonly know as sodium-dependent glucose transporter 1 (NaGLT1), a primary fructose transporter in rat renal brush-border membranes that also facilitates sodium-independent urea uptake. The MFSD4 subfamily belongs to the bacterial fucose permease, eukaryotic Major facilitator superfamily domain-containing protein 4 (FucP/MFSD4) 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: 340953 [Multi-domain] Cd Length: 367 Bit Score: 37.89 E-value: 9.02e-03
YcaD and similar transporters of the Major Facilitator Superfamily; This family is composed of ...
246-406
9.47e-03
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: 37.92 E-value: 9.47e-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.
Click on the triangle to view details about the feature, including a multiple sequence alignment
of your query sequence and the protein sequences used to curate the domain model,
where hash marks (#) above the aligned sequences show the location of the conserved feature residues.
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
