NADH-quinone oxidoreductase, chain G; This model represents the G subunit (one of 14: A->N) of ...
4-658
0e+00
NADH-quinone oxidoreductase, chain G; This model represents the G subunit (one of 14: A->N) of the NADH-quinone oxidoreductase complex I which generally couples NADH and ubiquinone oxidation/reduction in bacteria and mammalian mitochondria while translocating protons, but may act on NADPH and/or plastoquinone in cyanobacteria and plant chloroplasts. This model excludes related subunits from formate dehydrogenase complexes. [Energy metabolism, Electron transport]
The actual alignment was detected with superfamily member TIGR01973:
Pssm-ID: 273904 [Multi-domain] Cd Length: 602 Bit Score: 575.08 E-value: 0e+00
Molybdopterin-Binding, C-terminal (MopB_CT) domain of the MopB superfamily of proteins, a ...
813-890
2.13e-06
Molybdopterin-Binding, C-terminal (MopB_CT) domain of the MopB superfamily of proteins, a large, diverse, heterogeneous superfamily of enzymes that, in general, bind molybdopterin as a cofactor. The MopB domain is found in a wide variety of molybdenum- and tungsten-containing enzymes, including formate dehydrogenase-H (Fdh-H) and -N (Fdh-N), several forms of nitrate reductase (Nap, Nas, NarG), dimethylsulfoxide reductase (DMSOR), thiosulfate reductase, formylmethanofuran dehydrogenase, and arsenite oxidase. Molybdenum is present in most of these enzymes in the form of molybdopterin, a modified pterin ring with a dithiolene side chain, which is responsible for ligating the Mo. In many bacterial and archaeal species, molybdopterin is in the form of a dinucleotide, with two molybdopterin dinucleotide units per molybdenum. These proteins can function as monomers, heterodimers, or heterotrimers, depending on the protein and organism. Also included in the MopB superfamily is the eukaryotic/eubacterial protein domain family of the 75-kDa subunit/Nad11/NuoG (second domain) of respiratory complex 1/NADH-quinone oxidoreductase which is postulated to have lost an ancestral formate dehydrogenase activity and only vestigial sequence evidence remains of a molybdopterin binding site. This hierarchy is of the conserved MopB_CT domain present in many, but not all, MopB homologs.
The actual alignment was detected with superfamily member cd02788:
Pssm-ID: 447861 [Multi-domain] Cd Length: 96 Bit Score: 46.92 E-value: 2.13e-06
NADH-quinone oxidoreductase, chain G; This model represents the G subunit (one of 14: A->N) of ...
4-658
0e+00
NADH-quinone oxidoreductase, chain G; This model represents the G subunit (one of 14: A->N) of the NADH-quinone oxidoreductase complex I which generally couples NADH and ubiquinone oxidation/reduction in bacteria and mammalian mitochondria while translocating protons, but may act on NADPH and/or plastoquinone in cyanobacteria and plant chloroplasts. This model excludes related subunits from formate dehydrogenase complexes. [Energy metabolism, Electron transport]
Pssm-ID: 273904 [Multi-domain] Cd Length: 602 Bit Score: 575.08 E-value: 0e+00
NADH dehydrogenase/NADH:ubiquinone oxidoreductase 75 kD subunit (chain G) [Energy production and conversion]; NADH dehydrogenase/NADH:ubiquinone oxidoreductase 75 kD subunit (chain G) is part of the Pathway/BioSystem: NADH dehydrogenase
Pssm-ID: 440657 [Multi-domain] Cd Length: 453 Bit Score: 392.67 E-value: 8.34e-128
MopB_NDH-1_NuoG2-N7: The second domain of the NuoG subunit (with a [4Fe-4S] cluster, N7) of ...
225-697
1.40e-114
MopB_NDH-1_NuoG2-N7: The second domain of the NuoG subunit (with a [4Fe-4S] cluster, N7) of the NADH-quinone oxidoreductase/NADH dehydrogenase-1 (NDH-1) found in various bacteria. The NDH-1 is the first energy-transducting complex in the respiratory chain and functions as a redox pump that uses the redox energy to translocate H+ ions across the membrane, resulting in a significant contribution to energy production. In Escherichia coli NDH-1, the largest subunit is encoded by the nuoG gene, and is part of the 14 distinct subunits constituting the functional enzyme. The NuoG subunit is made of two domains: the first contains three binding sites for FeS clusters (the fer2 domain), the second domain (this CD), is of unknown function or, as postulated, has lost an ancestral formate dehydrogenase activity that became redundant during the evolution of the complex I enzyme. Unique to this group, compared to the other prokaryotic and eukaryotic groups in this domain protein family (NADH-Q-OR-NuoG2), is an N-terminal [4Fe-4S] cluster (N7/N1c) present in the second domain. Although only vestigial sequence evidence remains of a molybdopterin binding site, this protein domain belongs to the molybdopterin_binding (MopB) superfamily of proteins.
Pssm-ID: 239172 [Multi-domain] Cd Length: 472 Bit Score: 359.01 E-value: 1.40e-114
MopB_CT_NDH-1_NuoG2-N7: C-terminal region of the NuoG-like subunit (of the variant with a ...
813-890
2.13e-06
MopB_CT_NDH-1_NuoG2-N7: C-terminal region of the NuoG-like subunit (of the variant with a [4Fe-4S] cluster, N7) of the NADH-quinone oxidoreductase/NADH dehydrogenase-1 (NDH-1) found in various bacteria. The NDH-1 is the first energy-transducting complex in the respiratory chain and functions as a redox pump that uses the redox energy to translocate H+ ions across the membrane, resulting in a significant contribution to energy production. In Escherichia coli NDH-1, the largest subunit is encoded by the nuoG gene, and is part of the 14 distinct subunits constituting the functional enzyme. The NuoG subunit is made of two domains: the first contains three binding sites for FeS clusters (the fer2 domain), the second domain, is of unknown function or, as postulated, has lost an ancestral formate dehydrogenase activity that became redundant during the evolution of the complex I enzyme. Unique to this group, compared to the other prokaryotic and eukaryotic groups in this domain protein family (NADH-Q-OR-NuoG2), is an N-terminal [4Fe-4S] cluster (N7/N1c) present in the second domain and a C-terminal region (this CD) homologous to the formate dehydrogenase C-terminal molybdopterin_binding (MopB) region.
Pssm-ID: 239189 [Multi-domain] Cd Length: 96 Bit Score: 46.92 E-value: 2.13e-06
NADH-quinone oxidoreductase, chain G; This model represents the G subunit (one of 14: A->N) of ...
4-658
0e+00
NADH-quinone oxidoreductase, chain G; This model represents the G subunit (one of 14: A->N) of the NADH-quinone oxidoreductase complex I which generally couples NADH and ubiquinone oxidation/reduction in bacteria and mammalian mitochondria while translocating protons, but may act on NADPH and/or plastoquinone in cyanobacteria and plant chloroplasts. This model excludes related subunits from formate dehydrogenase complexes. [Energy metabolism, Electron transport]
Pssm-ID: 273904 [Multi-domain] Cd Length: 602 Bit Score: 575.08 E-value: 0e+00
NADH dehydrogenase/NADH:ubiquinone oxidoreductase 75 kD subunit (chain G) [Energy production and conversion]; NADH dehydrogenase/NADH:ubiquinone oxidoreductase 75 kD subunit (chain G) is part of the Pathway/BioSystem: NADH dehydrogenase
Pssm-ID: 440657 [Multi-domain] Cd Length: 453 Bit Score: 392.67 E-value: 8.34e-128
MopB_NDH-1_NuoG2-N7: The second domain of the NuoG subunit (with a [4Fe-4S] cluster, N7) of ...
225-697
1.40e-114
MopB_NDH-1_NuoG2-N7: The second domain of the NuoG subunit (with a [4Fe-4S] cluster, N7) of the NADH-quinone oxidoreductase/NADH dehydrogenase-1 (NDH-1) found in various bacteria. The NDH-1 is the first energy-transducting complex in the respiratory chain and functions as a redox pump that uses the redox energy to translocate H+ ions across the membrane, resulting in a significant contribution to energy production. In Escherichia coli NDH-1, the largest subunit is encoded by the nuoG gene, and is part of the 14 distinct subunits constituting the functional enzyme. The NuoG subunit is made of two domains: the first contains three binding sites for FeS clusters (the fer2 domain), the second domain (this CD), is of unknown function or, as postulated, has lost an ancestral formate dehydrogenase activity that became redundant during the evolution of the complex I enzyme. Unique to this group, compared to the other prokaryotic and eukaryotic groups in this domain protein family (NADH-Q-OR-NuoG2), is an N-terminal [4Fe-4S] cluster (N7/N1c) present in the second domain. Although only vestigial sequence evidence remains of a molybdopterin binding site, this protein domain belongs to the molybdopterin_binding (MopB) superfamily of proteins.
Pssm-ID: 239172 [Multi-domain] Cd Length: 472 Bit Score: 359.01 E-value: 1.40e-114
MopB_NADH-Q-OR-NuoG2: The NuoG/Nad11/75-kDa subunit (second domain) of the NADH-quinone ...
225-662
8.60e-71
MopB_NADH-Q-OR-NuoG2: The NuoG/Nad11/75-kDa subunit (second domain) of the NADH-quinone oxidoreductase (NADH-Q-OR)/respiratory complex I/NADH dehydrogenase-1 (NDH-1). The NADH-Q-OR is the first energy-transducting complex in the respiratory chains of many prokaryotes and eukaryotes. Mitochondrial complex I and its bacterial counterpart, NDH-1, function as a redox pump that uses the redox energy to translocate H+ ions across the membrane, resulting in a significant contribution to energy production. The atomic structure of complex I is not known and the mechanisms of electron transfer and proton pumping are not established. The nad11 gene codes for the largest (75-kDa) subunit of the mitochondrial NADH:ubiquinone oxidoreductase, it constitutes the electron input part of the enzyme, or the so-called NADH dehydrogenase fragment. In Escherichia coli, this subunit is encoded by the nuoG gene, and is part of the 14 distinct subunits constituting the 'minimal' functional enzyme. The nad11 gene is nuclear-encoded in animals, plants, and fungi, but is still encoded in the mitochondrial genome of some protists. The Nad11/NuoG subunit is made of two domains: the first contains three binding sites for FeS clusters (the fer2 domain), the second domain (this CD), is of unknown function or, as postulated, has lost an ancestral formate dehydrogenase activity that became redundant during the evolution of the complex I enzyme. Although only vestigial sequence evidence remains of a molybdopterin binding site, this protein domain family belongs to the molybdopterin_binding (MopB) superfamily of proteins. Bacterial type II NADH-quinone oxidoreductases and NQR-type sodium-motive NADH-quinone oxidoreductases are not homologs of this domain family.
Pssm-ID: 239169 [Multi-domain] Cd Length: 386 Bit Score: 239.11 E-value: 8.60e-71
Molybdopterin-Binding (MopB) domain of the MopB superfamily of proteins, a large, diverse, ...
225-662
8.73e-34
Molybdopterin-Binding (MopB) domain of the MopB superfamily of proteins, a large, diverse, heterogeneous superfamily of enzymes that, in general, bind molybdopterin as a cofactor. The MopB domain is found in a wide variety of molybdenum- and tungsten-containing enzymes, including formate dehydrogenase-H (Fdh-H) and -N (Fdh-N), several forms of nitrate reductase (Nap, Nas, NarG), dimethylsulfoxide reductase (DMSOR), thiosulfate reductase, formylmethanofuran dehydrogenase, and arsenite oxidase. Molybdenum is present in most of these enzymes in the form of molybdopterin, a modified pterin ring with a dithiolene side chain, which is responsible for ligating the Mo. In many bacterial and archaeal species, molybdopterin is in the form of a dinucleotide, with two molybdopterin dinucleotide units per molybdenum. These proteins can function as monomers, heterodimers, or heterotrimers, depending on the protein and organism. Also included in the MopB superfamily is the eukaryotic/eubacterial protein domain family of the 75-kDa subunit/Nad11/NuoG (second domain) of respiratory complex 1/NADH-quinone oxidoreductase which is postulated to have lost an ancestral formate dehydrogenase activity and only vestigial sequence evidence remains of a molybdopterin binding site.
Pssm-ID: 238218 [Multi-domain] Cd Length: 374 Bit Score: 133.99 E-value: 8.73e-34
NADH dehydrogenase/NADH:ubiquinone oxidoreductase 75 kD subunit (chain G) [Energy production and conversion]; NADH dehydrogenase/NADH:ubiquinone oxidoreductase 75 kD subunit (chain G) is part of the Pathway/BioSystem: NADH dehydrogenase
Pssm-ID: 440657 [Multi-domain] Cd Length: 453 Bit Score: 92.21 E-value: 2.23e-19
Molybdopterin oxidoreductase Fe4S4 domain; The molybdopterin oxidoreductase Fe4S4 domain is ...
221-274
3.82e-11
Molybdopterin oxidoreductase Fe4S4 domain; The molybdopterin oxidoreductase Fe4S4 domain is found in a number of reductase/dehydrogenase families, which include the periplasmic nitrate reductase precursor and the formate dehydrogenase alpha chain.
Pssm-ID: 197994 [Multi-domain] Cd Length: 55 Bit Score: 58.80 E-value: 3.82e-11
Molybdopterin oxidoreductase Fe4S4 domain; This domain is found in formate dehydrogenase H for ...
221-274
8.75e-11
Molybdopterin oxidoreductase Fe4S4 domain; This domain is found in formate dehydrogenase H for which the structure is known. This first domain (residues 1 to 60) of PDB:1aa6 is an Fe4S4 cluster just below the protein surface.
Pssm-ID: 428168 [Multi-domain] Cd Length: 55 Bit Score: 58.07 E-value: 8.75e-11
MopB_Res_Cmplx1_Nad11: The second domain of the Nad11/75-kDa subunit of the NADH-quinone ...
233-632
2.68e-08
MopB_Res_Cmplx1_Nad11: The second domain of the Nad11/75-kDa subunit of the NADH-quinone oxidoreductase/respiratory complex I/NADH dehydrogenase-1(NDH-1) of eukaryotes and the Nqo3/G subunit of alphaproteobacteria NDH-1. The NADH-quinone oxidoreductase is the first energy-transducting complex in the respiratory chains of many prokaryotes and eukaryotes. Mitochondrial complex I and its bacterial counterpart, NDH-1, function as a redox pump that uses the redox energy to translocate H+ ions across the membrane, resulting in a significant contribution to energy production. The nad11 gene codes for the largest (75 kDa) subunit of the mitochondrial NADH:ubiquinone oxidoreductase, it constitutes the electron input part of the enzyme, or the so-called NADH dehydrogenase fragment. In Paracoccus denitrificans, this subunit is encoded by the nqo3 gene, and is part of the 14 distinct subunits constituting the 'minimal' functional enzyme. The Nad11/Nqo3 subunit is made of two domains: the first contains three binding sites for FeS clusters (the fer2 domain), the second domain (this CD), is of unknown function or, as postulated, has lost an ancestral formate dehydrogenase activity that became redundant during the evolution of the complex I enzyme. Although only vestigial sequence evidence remains of a molybdopterin binding site, this protein domain belongs to the molybdopterin_binding (MopB) superfamily of proteins.
Pssm-ID: 239174 [Multi-domain] Cd Length: 375 Bit Score: 56.89 E-value: 2.68e-08
MopB_CT_NDH-1_NuoG2-N7: C-terminal region of the NuoG-like subunit (of the variant with a ...
813-890
2.13e-06
MopB_CT_NDH-1_NuoG2-N7: C-terminal region of the NuoG-like subunit (of the variant with a [4Fe-4S] cluster, N7) of the NADH-quinone oxidoreductase/NADH dehydrogenase-1 (NDH-1) found in various bacteria. The NDH-1 is the first energy-transducting complex in the respiratory chain and functions as a redox pump that uses the redox energy to translocate H+ ions across the membrane, resulting in a significant contribution to energy production. In Escherichia coli NDH-1, the largest subunit is encoded by the nuoG gene, and is part of the 14 distinct subunits constituting the functional enzyme. The NuoG subunit is made of two domains: the first contains three binding sites for FeS clusters (the fer2 domain), the second domain, is of unknown function or, as postulated, has lost an ancestral formate dehydrogenase activity that became redundant during the evolution of the complex I enzyme. Unique to this group, compared to the other prokaryotic and eukaryotic groups in this domain protein family (NADH-Q-OR-NuoG2), is an N-terminal [4Fe-4S] cluster (N7/N1c) present in the second domain and a C-terminal region (this CD) homologous to the formate dehydrogenase C-terminal molybdopterin_binding (MopB) region.
Pssm-ID: 239189 [Multi-domain] Cd Length: 96 Bit Score: 46.92 E-value: 2.13e-06
Formate dehydrogenase H (Formate-Dh-H) catalyzes the reversible oxidation of formate to CO2 ...
567-689
4.94e-06
Formate dehydrogenase H (Formate-Dh-H) catalyzes the reversible oxidation of formate to CO2 with the release of a proton and two electrons. It is a component of the anaerobic formate hydrogen lyase complex. The E. coli formate dehydrogenase H (Fdh-H) is a monomer composed of a single polypeptide chain with a Mo active site region and a [4Fe-4S] center. Members of the MopB_Formate-Dh-H CD belong to the molybdopterin_binding (MopB) superfamily of proteins.
Pssm-ID: 239154 [Multi-domain] Cd Length: 512 Bit Score: 50.29 E-value: 4.94e-06
Formate dehydrogenase H (Formate-Dh-H) catalyzes the reversible oxidation of formate to CO2 ...
225-399
1.54e-05
Formate dehydrogenase H (Formate-Dh-H) catalyzes the reversible oxidation of formate to CO2 with the release of a proton and two electrons. It is a component of the anaerobic formate hydrogen lyase complex. The E. coli formate dehydrogenase H (Fdh-H) is a monomer composed of a single polypeptide chain with a Mo active site region and a [4Fe-4S] center. Members of the MopB_Formate-Dh-H CD belong to the molybdopterin_binding (MopB) superfamily of proteins.
Pssm-ID: 239154 [Multi-domain] Cd Length: 512 Bit Score: 48.75 E-value: 1.54e-05
2Fe-2S iron-sulfur cluster binding domain; The 2Fe-2S ferredoxin family have a general core ...
1-68
7.35e-05
2Fe-2S iron-sulfur cluster binding domain; The 2Fe-2S ferredoxin family have a general core structure consisting of beta(2)-alpha-beta(2) which a beta-grasp type fold. The domain is around one hundred amino acids with four conserved cysteine residues to which the 2Fe-2S cluster is ligated. This cluster appears within sarcosine oxidase proteins.
Pssm-ID: 433268 [Multi-domain] Cd Length: 82 Bit Score: 42.14 E-value: 7.35e-05
2Fe-2S iron-sulfur cluster binding domain. Iron-sulfur proteins play an important role in ...
2-71
4.50e-04
2Fe-2S iron-sulfur cluster binding domain. Iron-sulfur proteins play an important role in electron transfer processes and in various enzymatic reactions. The family includes plant and algal ferredoxins, which act as electron carriers in photosynthesis and ferredoxins, which participate in redox chains (from bacteria to mammals). Fold is ismilar to thioredoxin.
Pssm-ID: 238126 [Multi-domain] Cd Length: 84 Bit Score: 39.69 E-value: 4.50e-04
This CD (MopB_DmsA-EC) includes the DmsA enzyme of the dmsABC operon encoding the anaerobic ...
593-662
2.54e-03
This CD (MopB_DmsA-EC) includes the DmsA enzyme of the dmsABC operon encoding the anaerobic dimethylsulfoxide reductase (DMSOR) of Escherichia coli and other related DMSOR-like enzymes. Unlike other DMSOR-like enzymes, this group has a predicted N-terminal iron-sulfur [4Fe-4S] cluster binding site. These members belong to the molybdopterin_binding (MopB) superfamily of proteins.
Pssm-ID: 239171 [Multi-domain] Cd Length: 617 Bit Score: 41.54 E-value: 2.54e-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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