6TM ABC transporter family protein is a subunit of six transmembrane (6TM) helices typically found in the ATP-binding cassette (ABC) transporters that function as exporters, which contain 6 TM helices per subunit (domain), or a total of 12 TM helices for the complete transporter
Six-transmembrane helical domain of the ATP-binding cassette transporters; This family ...
301-544
6.45e-113
Six-transmembrane helical domain of the ATP-binding cassette transporters; This family represents a subunit of six transmembrane (TM) helices typically found in the ATP-binding cassette (ABC) transporters that function as exporters, which contain 6 TM helices per subunit (domain), or a total of 12 TM helices for the complete transporter. The ABC exporters are found in both prokaryotes and eukaryotes, where they mediate the cellular secretion of toxic compounds and a various type of lipids. In addition to ABC exporters, ABC transporters include two classes of ABC importers, classified depending on details of their architecture and mechanism. Only the ABC exporters are included in this family. ABC transporters typically consist of two transmembrane domains (TMDs) and two nucleotide-binding domains (NBDs). The sequences and structures of the TMDs are quite varied between the different type of transporters, suggesting chemical diversity of the translocated substrates, whereas NBDs are conserved among all ABC transporters. The two NBDs together bind and hydrolyze ATP, thereby providing the driving force for transport, while the TMDs participate in substrate recognition and translocation across the lipid membrane. However, some ABC genes are organized as half-transporters, which must form either homodimers or heterodimers to form a functional unit. The ABC exporters play a role in multidrug resistance to antibiotics and anticancer agents, and mutations in these proteins have been shown to cause severe human diseases such as cystic fibrosis.
The actual alignment was detected with superfamily member cd18591:
Pssm-ID: 365789 [Multi-domain] Cd Length: 309 Bit Score: 338.06 E-value: 6.45e-113
Six-transmembrane helical domain 1 (TMD1) of the sulphonylurea receptors SUR1/2; This group ...
301-544
6.45e-113
Six-transmembrane helical domain 1 (TMD1) of the sulphonylurea receptors SUR1/2; This group represents the six-transmembrane domain 1 (TMD1) of the sulphonylurea receptors SUR1/2 (ABCC8), which function as a modulator of ATP-sensitive potassium channels and insulin release, and they belong to the ABCC subfamily. The ATP-sensitive (K-ATP) channel is an octameric complex of four pore-forming Kir6.2 subunits and four regulatory SUR subunits. Thus, in contrast to other ABC transporters, the SUR serves as the regulatory subunit of an ion channel. Mutations and deficiencies in the SUR proteins have been observed in patients with hyperinsulinemic hypoglycemia of infancy, an autosomal recessive disorder of unregulated and high insulin secretion. Mutations have also been associated with non-insulin-dependent diabetes mellitus type 2, an autosomal dominant disease of defective insulin secretion.
Pssm-ID: 350035 [Multi-domain] Cd Length: 309 Bit Score: 338.06 E-value: 6.45e-113
multi drug resistance-associated protein (MRP); This model describes multi drug ...
224-544
3.95e-31
multi drug resistance-associated protein (MRP); This model describes multi drug resistance-associated protein (MRP) in eukaryotes. The multidrug resistance-associated protein is an integral membrane protein that causes multidrug resistance when overexpressed in mammalian cells. It belongs to ABC transporter superfamily. The protein topology and function was experimentally demonstrated by epitope tagging and immunofluorescence. Insertion of tags in the critical regions associated with drug efflux, abrogated its function. The C-terminal domain seem to highly conserved. [Transport and binding proteins, Other]
Pssm-ID: 188098 [Multi-domain] Cd Length: 1522 Bit Score: 129.30 E-value: 3.95e-31
ABC transporter transmembrane region; This family represents a unit of six transmembrane ...
375-544
1.55e-23
ABC transporter transmembrane region; This family represents a unit of six transmembrane helices. Many members of the ABC transporter family (pfam00005) have two such regions.
Pssm-ID: 459896 [Multi-domain] Cd Length: 274 Bit Score: 100.41 E-value: 1.55e-23
Six-transmembrane helical domain 1 (TMD1) of the sulphonylurea receptors SUR1/2; This group ...
301-544
6.45e-113
Six-transmembrane helical domain 1 (TMD1) of the sulphonylurea receptors SUR1/2; This group represents the six-transmembrane domain 1 (TMD1) of the sulphonylurea receptors SUR1/2 (ABCC8), which function as a modulator of ATP-sensitive potassium channels and insulin release, and they belong to the ABCC subfamily. The ATP-sensitive (K-ATP) channel is an octameric complex of four pore-forming Kir6.2 subunits and four regulatory SUR subunits. Thus, in contrast to other ABC transporters, the SUR serves as the regulatory subunit of an ion channel. Mutations and deficiencies in the SUR proteins have been observed in patients with hyperinsulinemic hypoglycemia of infancy, an autosomal recessive disorder of unregulated and high insulin secretion. Mutations have also been associated with non-insulin-dependent diabetes mellitus type 2, an autosomal dominant disease of defective insulin secretion.
Pssm-ID: 350035 [Multi-domain] Cd Length: 309 Bit Score: 338.06 E-value: 6.45e-113
Six-transmembrane helical domain 1 (TMD1) of the ABC transporters, subfamily C; This group ...
301-544
3.04e-53
Six-transmembrane helical domain 1 (TMD1) of the ABC transporters, subfamily C; This group represents the six-transmembrane domain 1 (TMD1)of the ABC transporters that belong to the ABCC subfamily, such as the sulphonylurea receptors SUR1/2 (ABCC8), the cystic fibrosis transmembrane conductance regulator (CFTR, ABCC7), Multidrug-Resistance associated Proteins (MRP1-9), VMR1 (vacuolar multidrug resistance protein 1), and YOR1 (yeast oligomycin resistance transporter protein). This TM subunit exhibits the type 3 ATP-binding cassette (ABC) exporter fold, which is characterized by 6 TM helices per subunit (domain), or a total of 12 TM helices for the complete transporter. The type 3 ABC exporters are found in both prokaryotes and eukaryotes, where they mediate the cellular secretion of toxic compounds, a various type of lipids and polypeptides. ABC transporters typically consist of two transmembrane domains (TMDs) and two nucleotide-binding domains (NBDs). The two NBDs together bind and hydrolyze ATP, thereby providing the driving force for transport, while the TMDs participate in substrate recognition and translocation across the lipid membrane by alternating between inward- and outward-facing conformations. By contrast, bacterial ABC exporters are typically assembled from dimers of TMD-NBD half-transporters. Thus, most bacterial ABC transporters are comprised of two identical TMDs and two identical NBDs.
Pssm-ID: 350023 [Multi-domain] Cd Length: 289 Bit Score: 182.30 E-value: 3.04e-53
Six-transmembrane helical domain 1 (TMD1) of multidrug resistance-associated proteins (MRPs) 1, 2, 3 and 6; This group represents the six-transmembrane domain 1 (TMD1) of multidrug resistance-associated proteins (MRPs) 1, 2, 3 and 6, all of which are belonging to the subfamily C of the ATP-binding cassette (ABC) transporter superfamily. The MRP subfamily (ABCC subfamily) is composed of 13 members, of which MRP1 to MRP9 are the major transporters that cause multidrug resistance in tumor cells by pumping anticancer drugs out of the cell. These nine MRP members function as ATP-dependent exporters for endogenous substances and xenobiotics. MRP family can be divided into two groups, depending on their structural architecture. MRP4, MRP5, MRP8, and MRP9 (ABCC4, 5, 11 and 12, respectively) have a typical ABC transporter structure and each composed of two transmembrane domains (TMD1 and TMD2) and two nucleotide domains (NBD1 and NBD2). On the other hand, MRP1, 2, 3, 6 and 7 (ABCC1, 2, 3, 6 and 7, respectively) have an additional N-terminal five transmembrane segments in a single domain (TMD0) connected to the core (TMD-NBD) by a cytoplasmic linker (L0).
Pssm-ID: 350039 [Multi-domain] Cd Length: 290 Bit Score: 154.94 E-value: 6.72e-43
Six-transmembrane helical domain 1 (TMD1) of the yeast Yor1p and similar proteins; ABCC ...
372-542
1.97e-38
Six-transmembrane helical domain 1 (TMD1) of the yeast Yor1p and similar proteins; ABCC subfamily; This group includes the six-transmembrane domain 1 (TMD1) of the yeast Yor1p, an oligomycin resistance ABC transporter, and similar proteins. Members of this group belong to the MRP (multidrug resistance-associated protein) subfamily (ABCC). In addition to Yor1p, yeast ABCC (also termed MRP/CFTR) subfamily also comprises five other members (Ycf1p, Bpt1p, Ybt1p/Bat1p, Nft1p, and Vmr1p), which are not included in this group. Yor1p is a plasma membrane ATP-binding transporter that mediates export of many different organic anions including oligomycin. While Yor1p has been shown to localize to the plasma membrane, the other 4 members (Ycf1p, Bpt1p, Ybt1p/Bat1p, Nft1p and Vmr1p) have been shown to localize to the vacuolar membrane.
Pssm-ID: 350041 [Multi-domain] Cd Length: 293 Bit Score: 142.59 E-value: 1.97e-38
Six-transmembrane helical domain 1 (TMD1) of multidrug resistance-associated protein 7, and ...
305-539
1.55e-34
Six-transmembrane helical domain 1 (TMD1) of multidrug resistance-associated protein 7, and similar proteins; This group represents the six-transmembrane domain 1 (TMD1) of multidrug resistance-associated protein 7 (MRP7), which belongs to the subfamily C of the ATP-binding cassette (ABC) transporter superfamily. The MRP subfamily (ABCC subfamily) is composed of 13 members, of which MRP1 to MRP9 are the major transporters that cause multidrug resistance in tumor cells by pumping anticancer drugs out of the cell. These nine MRP members function as ATP-dependent exporters for endogenous substances and xenobiotics. MRP family can be divided into two groups, depending on their structural architecture. MRP4, MRP5, MRP8, and MRP9 (ABCC4, 5, 11 and 12, respectively) have a typical ABC transporter structure and each composed of two transmembrane domains (TMD1 and TMD2) and two nucleotide domains (NBD1 and NBD2). On the other hand, MRP1, 2, 3, 6 and 7 (ABCC1, 2, 3, 6 and 7, respectively) have an additional N-terminal five transmembrane segments in a single domain (TMD0) connected to the core (TMD-NBD) by a cytoplasmic linker (L0).
Pssm-ID: 350042 [Multi-domain] Cd Length: 288 Bit Score: 131.91 E-value: 1.55e-34
Six-transmembrane helical domain 1 (TMD1) of multidrug resistance-associated proteins (MRPs) 5, 8, and 9; This group represents the six-transmembrane domain 1 (TMD1) of multidrug resistance-associated proteins (MRPs) 5, 8, and 9, all of which are belonging to the subfamily C of the ATP-binding cassette (ABC) transporter superfamily. The MRP subfamily (ABCC subfamily) is composed of 13 members, of which MRP1 to MRP9 are the major transporters that cause multidrug resistance in tumor cells by pumping anticancer drugs out of the cell. These nine MRP members function as ATP-dependent exporters for endogenous substances and xenobiotics. MRP family can be divided into two groups, depending on their structural architecture. MRP4, MRP5, MRP8, and MRP9 (ABCC4, 5, 11 and 12, respectively) have a typical ABC transporter structure and each composed of two transmembrane domains (TMD1 and TMD2) and two nucleotide domains (NBD1 and NBD2). On the other hand, MRP1, 2, 3, 6 and 7 (ABCC1, 2, 3, 6 and 7, respectively) have an additional N-terminal five transmembrane segments in a single domain (TMD0) connected to the core (TMD-NBD) by a cytoplasmic linker (L0).
Pssm-ID: 350036 [Multi-domain] Cd Length: 287 Bit Score: 127.29 E-value: 7.44e-33
Six-transmembrane helical domain 1 of Cystic Fibrosis Transmembrane Conductance Regulator; This group represents the six-transmembrane domain 1 (TMD1) of the cystic fibrosis transmembrane conductance regulator (CFTR, ABCC7), which belongs to the ABCC subfamily. CFTR functions as a chloride channel, in contrast to other ABC transporters, and controls ion and water secretion and absorption in epithelial tissues. ABC proteins are formed from two homologous halves each containing a transmembrane domain (TMD) and a cytosolic nucleotide binding domain (NBD). In CFTR, these two TMD-NBD halves are linked by the unique regulatory (R) domain, which is not present in other ABC transporters. The ion channel only opens when its R-domain is phosphorylated by cyclic AMP-dependent protein kinase (PKA) and ATP is bound at the NBDs. Mutations in CFTR cause cystic fibrosis, the most common lethal genetic disorder in populations of Northern European descent.
Pssm-ID: 350038 [Multi-domain] Cd Length: 291 Bit Score: 126.21 E-value: 1.82e-32
Six-transmembrane helical domain 1 (TMD1) of the yeast Vmr1p, Ybt1p and Nft1; ABCC subfamily; ...
311-544
3.66e-32
Six-transmembrane helical domain 1 (TMD1) of the yeast Vmr1p, Ybt1p and Nft1; ABCC subfamily; This group includes the six-transmembrane domain 1 (TMD1) of the yeast Vmr1p, Ybt1p and Nft1, all of which are ABC transporters of the MRP (multidrug resistance-associated protein) subfamily (ABCC). Yeast ABCC (also termed MRP/CFTR) subfamily includes six members (Ycf1p, Bpt1p, Ybt1p/Bat1p, Nft1p, Vmr1p, and Yor1p), of which three members (Ycf1p, Bpt1P and Yor1p) are not included here. While Yor1p, an oligomycin resistance ABC transporter, has been shown to localize to the plasma membrane, the other 4 members (Ycf1p, Bpt1p, Ybt1p/Bat1p, Nft1p and Vmr1p) have been shown to localize to the vacuolar membrane. Ybt1p is originally identified as a bile acid transporter and regulates membrane fusion through Ca2+ transport modulation. Ybt1p also plays a part in ade2 pigment transport. Moreover, Ybt1p has been recently shown to translocate phosphatidylcholine from the outer leaflet of the vacuole to the inner leaflet for degradation and choline recycling. Vmr1p, a vacuolar membrane protein, participates in the export of numerous growth inhibitors from the cell, such as cycloheximide, 2,4-dinitrophenole, cadmium and other toxic metals. Nft1p is not well-characterized, but it is proposed to be regulate Ycf1p, which is involved in heavy metal detoxification.
Pssm-ID: 350040 [Multi-domain] Cd Length: 309 Bit Score: 125.68 E-value: 3.66e-32
multi drug resistance-associated protein (MRP); This model describes multi drug ...
224-544
3.95e-31
multi drug resistance-associated protein (MRP); This model describes multi drug resistance-associated protein (MRP) in eukaryotes. The multidrug resistance-associated protein is an integral membrane protein that causes multidrug resistance when overexpressed in mammalian cells. It belongs to ABC transporter superfamily. The protein topology and function was experimentally demonstrated by epitope tagging and immunofluorescence. Insertion of tags in the critical regions associated with drug efflux, abrogated its function. The C-terminal domain seem to highly conserved. [Transport and binding proteins, Other]
Pssm-ID: 188098 [Multi-domain] Cd Length: 1522 Bit Score: 129.30 E-value: 3.95e-31
Six-transmembrane helical domain 1 (TMD1) of multidrug resistance-associated protein 4 (MRP4) ...
376-542
4.11e-31
Six-transmembrane helical domain 1 (TMD1) of multidrug resistance-associated protein 4 (MRP4) and similar proteins; This group represents the six-transmembrane domain 1 (TMD1) of multidrug resistance-associated protein 4 (MRP4), which belongs to the subfamily C of the ATP-binding cassette (ABC) transporter superfamily. The MRP subfamily (ABCC subfamily) is composed of 13 members, of which MRP1 to MRP9 are the major transporters that cause multidrug resistance in tumor cells by pumping anticancer drugs out of the cell. These nine MRP members function as ATP-dependent exporters for endogenous substances and xenobiotics. MRP family can be divided into two groups, depending on their structural architecture. MRP4, MRP5, MRP8, and MRP9 (ABCC4, 5, 11 and 12, respectively) have a typical ABC transporter structure and each composed of two transmembrane domains (TMD1 and TMD2) and two nucleotide domains (NBD1 and NBD2). On the other hand, MRP1, 2, 3, 6 and 7 (ABCC1, 2, 3, 6 and 7, respectively) have an additional N-terminal five transmembrane segments in a single domain (TMD0) connected to the core (TMD-NBD) by a cytoplasmic linker (L0).
Pssm-ID: 350037 [Multi-domain] Cd Length: 291 Bit Score: 122.33 E-value: 4.11e-31
ABC transporter transmembrane region; This family represents a unit of six transmembrane ...
375-544
1.55e-23
ABC transporter transmembrane region; This family represents a unit of six transmembrane helices. Many members of the ABC transporter family (pfam00005) have two such regions.
Pssm-ID: 459896 [Multi-domain] Cd Length: 274 Bit Score: 100.41 E-value: 1.55e-23
Six-transmembrane helical domain of the ABC transporters, subfamily C; This group represents ...
374-546
2.54e-19
Six-transmembrane helical domain of the ABC transporters, subfamily C; This group represents the 6-transmembrane (6TM) domain of the ABC transporters that belong to the ABCC subfamily, such as the sulphonylurea receptors SUR1/2 (ABCC8), the cystic fibrosis transmembrane conductance regulator (CFTR, ABCC7), Multidrug-Resistance associated Proteins (MRP1-9), VMR1 (vacuolar multidrug resistance protein 1), and YOR1 (yeast oligomycin resistance transporter protein). This TM subunit exhibits the type 3 ATP-binding cassette (ABC) exporter fold, which is characterized by 6 TM helices per subunit (domain), or a total of 12 TM helices for the complete transporter. The type 3 ABC exporters are found in both prokaryotes and eukaryotes, where they mediate the cellular secretion of toxic compounds, a various type of lipids and polypeptides.
Pssm-ID: 350003 [Multi-domain] Cd Length: 290 Bit Score: 88.43 E-value: 2.54e-19
cystic fibrosis transmembrane conductor regulator (CFTR); The model describes the cystis ...
223-537
6.23e-17
cystic fibrosis transmembrane conductor regulator (CFTR); The model describes the cystis fibrosis transmembrane conductor regulator (CFTR) in eukaryotes. The principal role of this protein is chloride ion conductance. The protein is predicted to consist of 12 transmembrane domains. Mutations or lesions in the genetic loci have been linked to the aetiology of asthma, bronchiectasis, chronic obstructive pulmonary disease etc. Disease-causing mutations have been studied by 36Cl efflux assays in vitro cell cultures and electrophysiology, all of which point to the impairment of chloride channel stability and not the biosynthetic processing per se. [Transport and binding proteins, Anions]
Pssm-ID: 273530 [Multi-domain] Cd Length: 1490 Bit Score: 84.58 E-value: 6.23e-17
Six-transmembrane helical domain of the ATP-binding cassette transporters; This family ...
378-543
5.22e-07
Six-transmembrane helical domain of the ATP-binding cassette transporters; This family represents a subunit of six transmembrane (TM) helices typically found in the ATP-binding cassette (ABC) transporters that function as exporters, which contain 6 TM helices per subunit (domain), or a total of 12 TM helices for the complete transporter. The ABC exporters are found in both prokaryotes and eukaryotes, where they mediate the cellular secretion of toxic compounds and a various type of lipids. In addition to ABC exporters, ABC transporters include two classes of ABC importers, classified depending on details of their architecture and mechanism. Only the ABC exporters are included in this family. ABC transporters typically consist of two transmembrane domains (TMDs) and two nucleotide-binding domains (NBDs). The sequences and structures of the TMDs are quite varied between the different type of transporters, suggesting chemical diversity of the translocated substrates, whereas NBDs are conserved among all ABC transporters. The two NBDs together bind and hydrolyze ATP, thereby providing the driving force for transport, while the TMDs participate in substrate recognition and translocation across the lipid membrane. However, some ABC genes are organized as half-transporters, which must form either homodimers or heterodimers to form a functional unit. The ABC exporters play a role in multidrug resistance to antibiotics and anticancer agents, and mutations in these proteins have been shown to cause severe human diseases such as cystic fibrosis.
Pssm-ID: 349983 [Multi-domain] Cd Length: 292 Bit Score: 51.40 E-value: 5.22e-07
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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Functional characterization of the conserved domain architecture found on the query.
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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.
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(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.
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