Structure of mitochondrial complex I from Drosophila melanogaster, Flexible-class 1
Domain Annotation: ECOD Classification ECOD Database Homepage
| Chains | Family Name | Domain Identifier | Architecture | Possible Homology | Homology | Topology | Family | Provenance Source (Version) |
|---|---|---|---|---|---|---|---|---|
| C [auth S1] | F_UNCLASSIFIED | e8eswS12 | A: a+b two layers | X: 4Fe-4S ferredoxin (From Topology) | H: 4Fe-4S ferredoxin (From Topology) | T: 4Fe-4S ferredoxin | F: F_UNCLASSIFIED | ECOD (1.6) |
| C [auth S1] | F_UNCLASSIFIED | e8eswS16 | A: a+b two layers | X: beta-Grasp | H: Ubiquitin-related | T: Ubiquitin-like | F: F_UNCLASSIFIED | ECOD (1.6) |
| C [auth S1] | F_UNCLASSIFIED | e8eswS14 | A: a+b two layers | X: Formate dehydrogenase/DMSO reductase, domain 1 (From Topology) | H: Formate dehydrogenase/DMSO reductase, domain 1 (From Topology) | T: Formate dehydrogenase/DMSO reductase, domain 1 | F: F_UNCLASSIFIED | ECOD (1.6) |
| C [auth S1] | F_UNCLASSIFIED | e8eswS15 | A: a/b three-layered sandwiches | X: Rossmann-like | H: Formate dehydrogenase/DMSO reductase, domains 2 and 3 (From Topology) | T: Formate dehydrogenase/DMSO reductase, domains 2 and 3 | F: F_UNCLASSIFIED | ECOD (1.6) |
| C [auth S1] | F_UNCLASSIFIED | e8eswS11 | A: extended segments | X: iron-sulfur center-binding helical hairpin (From Topology) | H: iron-sulfur center-binding helical hairpin (From Topology) | T: iron-sulfur center-binding helical hairpin | F: F_UNCLASSIFIED | ECOD (1.6) |
| D [auth S3] | F_UNCLASSIFIED | e8eswS31 | A: a+b two layers | X: Nqo5-like | H: Nqo5-like (From Topology) | T: Nqo5-like | F: F_UNCLASSIFIED | ECOD (1.6) |
| E [auth V2] | F_UNCLASSIFIED | e8eswV21 | A: alpha bundles | X: NQO2 helical bundle domain (From Topology) | H: NQO2 helical bundle domain (From Topology) | T: NQO2 helical bundle domain | F: F_UNCLASSIFIED | ECOD (1.6) |
| E [auth V2] | F_UNCLASSIFIED | e8eswV22 | A: a+b three layers | X: Thioredoxin-like | H: Thioredoxin-like (From Topology) | T: Thioredoxin-like | F: F_UNCLASSIFIED | ECOD (1.6) |
| G [auth S8] | F_UNCLASSIFIED | e8eswS81 | A: a+b two layers | X: 4Fe-4S ferredoxin (From Topology) | H: 4Fe-4S ferredoxin (From Topology) | T: 4Fe-4S ferredoxin | F: F_UNCLASSIFIED | ECOD (1.6) |
| H [auth 3] | F_UNCLASSIFIED | e8esw31 | A: extended segments | X: NADH-quinone oxidoreductase subunit A (From Topology) | H: NADH-quinone oxidoreductase subunit A (From Topology) | T: NADH-quinone oxidoreductase subunit A | F: F_UNCLASSIFIED | ECOD (1.6) |
| I [auth 1] | F_UNCLASSIFIED | e8esw11 | A: alpha complex topology | X: Sodium/proton antiporter subunits-like (From Homology) | H: Sodium/proton antiporter subunits-like | T: NADH-quinone oxidoreductase subunit 8 (Nqo8)-related | F: F_UNCLASSIFIED | ECOD (1.6) |
| J [auth 4] | F_UNCLASSIFIED | e8esw41 | A: alpha complex topology | X: Sodium/proton antiporter subunits-like (From Homology) | H: Sodium/proton antiporter subunits-like | T: NADH-quinone oxidoreductase subunit L (NuoL)-related | F: F_UNCLASSIFIED | ECOD (1.6) |
| L [auth A8] | F_UNCLASSIFIED | e8eswA81 | A: few secondary structure elements | X: p8-MTCP1-related (From Topology) | H: p8-MTCP1-related (From Topology) | T: p8-MTCP1-related | F: F_UNCLASSIFIED | ECOD (1.6) |
| M [auth A1] | F_UNCLASSIFIED | e8eswA11 | A: extended segments | X: Mitochondrial complex I, MWFE subunit (From Topology) | H: Mitochondrial complex I, MWFE subunit (From Topology) | T: Mitochondrial complex I, MWFE subunit | F: F_UNCLASSIFIED | ECOD (1.6) |
| N [auth AO] | F_UNCLASSIFIED | e8eswAO1 | A: extended segments | X: Mitochondrial complex I, B16.6 subunit (From Topology) | H: Mitochondrial complex I, B16.6 subunit (From Topology) | T: Mitochondrial complex I, B16.6 subunit | F: F_UNCLASSIFIED | ECOD (1.6) |
| O [auth S5] | F_UNCLASSIFIED | e8eswS51 | A: alpha bundles | X: cytochrome bc1 complex 11 kDa protein-like | H: CHCH domain (From Topology) | T: CHCH domain | F: F_UNCLASSIFIED | ECOD (1.6) |
| Q [auth BL] | F_UNCLASSIFIED | e8eswBL1 | A: alpha bundles | X: Mitochondrial complex I, PDSW subunit (From Topology) | H: Mitochondrial complex I, PDSW subunit (From Topology) | T: Mitochondrial complex I, PDSW subunit | F: F_UNCLASSIFIED | ECOD (1.6) |
| U [auth B5] | F_UNCLASSIFIED | e8eswB51 | A: extended segments | X: Mitochondrial complex I, SGDH subunit (From Topology) | H: Mitochondrial complex I, SGDH subunit (From Topology) | T: Mitochondrial complex I, SGDH subunit | F: F_UNCLASSIFIED | ECOD (1.6) |
| QA [auth AB] | F_UNCLASSIFIED | e8eswAB1 | A: alpha bundles | X: ACP-like | H: Acyl-carrier protein (ACP) (From Topology) | T: Acyl-carrier protein (ACP) | F: F_UNCLASSIFIED | ECOD (1.6) |
| Z [auth AC] | F_UNCLASSIFIED | e8eswAC1 | A: alpha bundles | X: ACP-like | H: Acyl-carrier protein (ACP) (From Topology) | T: Acyl-carrier protein (ACP) | F: F_UNCLASSIFIED | ECOD (1.6) |
| BA [auth B1] | F_UNCLASSIFIED | e8eswB11 | A: extended segments | X: Mitochondrial complex I, MNLL subunit (From Topology) | H: Mitochondrial complex I, MNLL subunit (From Topology) | T: Mitochondrial complex I, MNLL subunit | F: F_UNCLASSIFIED | ECOD (1.6) |
| CA [auth S4] | F_UNCLASSIFIED | e8eswS41 | A: a+b two layers | X: Putative oxidoreductase (From Topology) | H: Putative oxidoreductase (From Topology) | T: Putative oxidoreductase | F: F_UNCLASSIFIED | ECOD (1.6) |
| DA [auth A9] | F_UNCLASSIFIED | e8eswA91 | A: a/b three-layered sandwiches | X: Rossmann-like | H: Rossmann-related | T: NAD(P)-binding Rossmann-fold domains | F: F_UNCLASSIFIED | ECOD (1.6) |
| HA [auth V1] | F_UNCLASSIFIED | e8eswV11 | A: alpha bundles | X: Bromodomain-like | H: Nqo1C-terminal domain-like (From Topology) | T: Nqo1C-terminal domain-like | F: F_UNCLASSIFIED | ECOD (1.6) |
| HA [auth V1] | F_UNCLASSIFIED | e8eswV12 | A: a+b two layers | X: beta-Grasp | H: Ubiquitin-related | T: Nqo1 middle domain-like | F: F_UNCLASSIFIED | ECOD (1.6) |
| HA [auth V1] | F_UNCLASSIFIED | e8eswV13 | A: a/b three-layered sandwiches | X: Nqo1 FMN-binding domain-like (From Topology) | H: Nqo1 FMN-binding domain-like (From Topology) | T: Nqo1 FMN-binding domain-like | F: F_UNCLASSIFIED | ECOD (1.6) |
| IA [auth 2] | F_UNCLASSIFIED | e8esw21 | A: alpha complex topology | X: Sodium/proton antiporter subunits-like (From Homology) | H: Sodium/proton antiporter subunits-like | T: NADH-quinone oxidoreductase subunit L (NuoL)-related | F: F_UNCLASSIFIED | ECOD (1.6) |
| MA [auth A5] | F_UNCLASSIFIED | e8eswA51 | A: extended segments | X: FATC domain (From Topology) | H: FATC domain (From Topology) | T: FATC domain | F: F_UNCLASSIFIED | ECOD (1.6) |
| OA [auth A6] | F_UNCLASSIFIED | e8eswA61 | A: alpha bundles | X: LYR protein (From Topology) | H: LYR protein (From Topology) | T: LYR protein | F: F_UNCLASSIFIED | ECOD (1.6) |
| PA [auth AL] | F_UNCLASSIFIED | e8eswAL1 | A: a/b three-layered sandwiches | X: P-loop domains-like | H: P-loop domains-related | T: P-loop containing nucleoside triphosphate hydrolases | F: F_UNCLASSIFIED | ECOD (1.6) |
| KA [auth 6] | F_UNCLASSIFIED | e8esw61 | A: extended segments | X: NADH-quinone oxidoreductase subunit J (From Topology) | H: NADH-quinone oxidoreductase subunit J (From Topology) | T: NADH-quinone oxidoreductase subunit J | F: F_UNCLASSIFIED | ECOD (1.6) |
| JA [auth 4L] | F_UNCLASSIFIED | e8esw4L1 | A: alpha complex topology | X: NADH-quinone oxidoreductase subunit K (From Topology) | H: NADH-quinone oxidoreductase subunit K (From Topology) | T: NADH-quinone oxidoreductase subunit K | F: F_UNCLASSIFIED | ECOD (1.6) |
| EA [auth B2] | F_UNCLASSIFIED | e8eswB21 | A: extended segments | X: Mitochondrial complex I, AGGG subunit (From Topology) | H: Mitochondrial complex I, AGGG subunit (From Topology) | T: Mitochondrial complex I, AGGG subunit | F: F_UNCLASSIFIED | ECOD (1.6) |
| AA [auth C2] | F_UNCLASSIFIED | e8eswC21 | A: extended segments | X: Mitochondrial complex I, B14.5b subunit (From Topology) | H: Mitochondrial complex I, B14.5b subunit (From Topology) | T: Mitochondrial complex I, B14.5b subunit | F: F_UNCLASSIFIED | ECOD (1.6) |
| V [auth B9] | F_UNCLASSIFIED | e8eswB91 | A: alpha bundles | X: LYR protein (From Topology) | H: LYR protein (From Topology) | T: LYR protein | F: F_UNCLASSIFIED | ECOD (1.6) |
| B [auth S6] | F_UNCLASSIFIED | e8eswS61 | A: few secondary structure elements | X: Rubredoxin-like | H: Rubredoxin-related | T: Cytochrome c oxidase Subunit F | F: F_UNCLASSIFIED | ECOD (1.6) |
| A [auth AN] | F_UNCLASSIFIED | e8eswAN1 | A: a+b three layers | X: Mitochondrial complex I, B17.2 subunit (From Topology) | H: Mitochondrial complex I, B17.2 subunit (From Topology) | T: Mitochondrial complex I, B17.2 subunit | F: F_UNCLASSIFIED | ECOD (1.6) |
Protein Family Annotation Pfam Database Homepage
| Chains | Accession | Name | Description | Comments | Source |
|---|---|---|---|---|---|
| C [auth S1] | PF00384 | Molybdopterin oxidoreductase (Molybdopterin) | Molybdopterin oxidoreductase | Domain | |
| C [auth S1] | PF22151 | NADH-ubiquinone oxidoreductase NDSU1/NuoG-like, 4Fe-4S domain (Fer4_NDSU1) | NADH-ubiquinone oxidoreductase NDSU1/NuoG-like, 4Fe-4S domain | This entry represents the 4Fe-4S domain of NADH-ubiquinone oxidoreductase NDUFS1 from mammals and NuoG from bacteria, which are part of respiratory chain complex I [1-5]. | Domain |
| C [auth S1] | PF09326 | NADH-ubiquinone oxidoreductase subunit G, C-terminal (NADH_dhqG_C) | NADH-ubiquinone oxidoreductase subunit G, C-terminal | - | Family |
| C [auth S1] | PF22117 | NADH-quinone oxidoreductase subunit 3, ferredoxin-like domain (Fer4_Nqo3) | NADH-quinone oxidoreductase subunit 3, ferredoxin-like domain | NADH-quinone oxidoreductase subunit 3 (Nqo3) is a component of respiratory complex I. This protein is located at the peripheral arm of the complex and consists of multiple domains. This entry represents the second ferredoxin-like domain which contain ... | Domain |
| C [auth S1] | PF13510 | 2Fe-2S iron-sulfur cluster binding domain (Fer2_4) | 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. Th ... | Domain |
| C [auth S1] | PF10588 | NADH-ubiquinone oxidoreductase-G iron-sulfur binding region (NADH-G_4Fe-4S_3) | NADH-ubiquinone oxidoreductase-G iron-sulfur binding region | Domain | |
| D [auth S3] | PF00329 | Respiratory-chain NADH dehydrogenase, 30 Kd subunit (Complex1_30kDa) | Respiratory-chain NADH dehydrogenase, 30 Kd subunit | Domain | |
| E [auth V2] | PF01257 | Thioredoxin-like [2Fe-2S] ferredoxin (2Fe-2S_thioredx) | Thioredoxin-like [2Fe-2S] ferredoxin | - | Family |
| G [auth S8] | PF12838 | 4Fe-4S dicluster domain (Fer4_7) | 4Fe-4S dicluster domain | Superfamily includes proteins containing domains which bind to iron-sulfur clusters. Members include bacterial ferredoxins, various dehydrogenases, and various reductases. Structure of the domain is an alpha-antiparallel beta sandwich. Domain contai ... | Domain |
| H [auth 3] | PF00507 | NADH-ubiquinone/plastoquinone oxidoreductase, chain 3 (Oxidored_q4) | NADH-ubiquinone/plastoquinone oxidoreductase, chain 3 | - | Family |
| M [auth A1] | PF15879 | NADH-ubiquinone oxidoreductase MWFE subunit (MWFE) | NADH-ubiquinone oxidoreductase MWFE subunit | - | Family |
| O [auth S5] | PF10200 | NADH:ubiquinone oxidoreductase, NDUFS5-15kDa (Ndufs5) | NADH:ubiquinone oxidoreductase, NDUFS5-15kDa | - | Family |
| Q [auth BL] | PF10249 | NADH-ubiquinone oxidoreductase subunit 10 (NDUFB10) | NADH-ubiquinone oxidoreductase subunit 10 | - | Family |
| T [auth B7] | PF05676 | NADH-ubiquinone oxidoreductase B18 subunit (NDUFB7) (NDUF_B7) | NADH-ubiquinone oxidoreductase B18 subunit (NDUFB7) | - | Family |
| QA [auth AB], Z [auth AC] | PF00550 | Phosphopantetheine attachment site (PP-binding) | Phosphopantetheine attachment site | A 4'-phosphopantetheine prosthetic group is attached through a serine. This prosthetic group acts as a a 'swinging arm' for the attachment of activated fatty acid and amino-acid groups. This domain forms a four helix bundle. This family includes memb ... | Domain |
| CA [auth S4] | PF04800 | NADH dehydrogenase ubiquinone Fe-S protein 4 (NDUS4) | NADH dehydrogenase ubiquinone Fe-S protein 4 | - | Family |
| DA [auth A9] | PF01370 | NAD dependent epimerase/dehydratase family (Epimerase) | NAD dependent epimerase/dehydratase family | - | Family |
| HA [auth V1] | PF22461 | SLBB domain (SLBB_2) | SLBB domain | This entry represents a set of SLBB domains [5]. | Domain |
| HA [auth V1] | PF01512 | Nuo51 FMN-binding domain (Complex1_51K) | Nuo51 FMN-binding domain | This entry represents the FMN-binding domain of NADH-ubiquinone oxidoreductase 51kDa subunit from NADH:ubiquinone oxidoreductase. | Domain |
| HA [auth V1] | PF10589 | NADH-ubiquinone oxidoreductase-F iron-sulfur binding region (NADH_4Fe-4S) | NADH-ubiquinone oxidoreductase-F iron-sulfur binding region | Domain | |
| IA [auth 2] | PF00361 | NADH:quinone oxidoreductase/Mrp antiporter, TM (Proton_antipo_M) | NADH:quinone oxidoreductase/Mrp antiporter, TM | This entry includes membrane transporters and represents some 7 of potentially 14-16 TM regions. In many instances, its members forms part of complex I that catalyses the transfer of two electrons from NADH to ubiquinone in a reaction that is associa ... | Domain |
| IA [auth 2] | PF06444 | NADH dehydrogenase subunit 2 C-terminus (NADH_dehy_S2_C) | NADH dehydrogenase subunit 2 C-terminus | This family consists of the C-terminal region specific to the eukaryotic NADH dehydrogenase subunit 2 protein and is found in conjunction with Pfam:PF00361. | Domain |
| LA [auth A7] | PF07347 | NADH:ubiquinone oxidoreductase subunit B14.5a (Complex I-B14.5a) (CI-B14_5a) | NADH:ubiquinone oxidoreductase subunit B14.5a (Complex I-B14.5a) | - | Family |
| MA [auth A5] | PF04716 | ETC complex I subunit conserved region (ETC_C1_NDUFA5) | ETC complex I subunit conserved region | - | Family |
| OA [auth A6] | PF05347 | Complex 1 protein (LYR family) (Complex1_LYR) | Complex 1 protein (LYR family) | - | Family |
| PA [auth AL] | PF01712 | Deoxynucleoside kinase (dNK) | Deoxynucleoside kinase | This family consists of various deoxynucleoside kinases cytidine EC:2.7.1.74, guanosine EC:2.7.1.113, adenosine EC:2.7.1.76 and thymidine kinase EC:2.7.1.21 (which also phosphorylates deoxyuridine and deoxycytosine.) These enzymes catalyse the prod ... | Domain |
| F [auth S7] | PF01058 | NADH ubiquinone oxidoreductase, 20 Kd subunit (Oxidored_q6) | NADH ubiquinone oxidoreductase, 20 Kd subunit | Domain | |
| KA [auth 6] | PF00499 | NADH-ubiquinone/plastoquinone oxidoreductase chain 6 (Oxidored_q3) | NADH-ubiquinone/plastoquinone oxidoreductase chain 6 | - | Family |
| JA [auth 4L] | PF00420 | NADH-ubiquinone/plastoquinone oxidoreductase chain 4L (Oxidored_q2) | NADH-ubiquinone/plastoquinone oxidoreductase chain 4L | - | Family |
| FA [auth S2] | PF00346 | Respiratory-chain NADH dehydrogenase, 49 Kd subunit (Complex1_49kDa) | Respiratory-chain NADH dehydrogenase, 49 Kd subunit | - | Family |
| AA [auth C2] | PF06374 | NADH-ubiquinone oxidoreductase subunit b14.5b (NDUFC2) (NDUF_C2) | NADH-ubiquinone oxidoreductase subunit b14.5b (NDUFC2) | - | Family |
| Y [auth B3] | PF08122 | NADH-ubiquinone oxidoreductase B12 subunit family (NDUF_B12) | NADH-ubiquinone oxidoreductase B12 subunit family | - | Family |
| V [auth B9] | PF05347 | Complex 1 protein (LYR family) (Complex1_LYR) | Complex 1 protein (LYR family) | - | Family |
| B [auth S6] | PF10276 | Zinc-finger domain (zf-CHCC) | Zinc-finger domain | This is a short zinc-finger domain conserved from fungi to humans. It is Cx8Hx14Cx2C. | Domain |
| R [auth B6] | PF09782 | NADH:ubiquinone oxidoreductase, NDUFB6/B17 subunit (NDUF_B6) | NADH:ubiquinone oxidoreductase, NDUFB6/B17 subunit | - | Family |
| A [auth AN] | PF05071 | NADH ubiquinone oxidoreductase subunit NDUFA12 (NDUFA12) | NADH ubiquinone oxidoreductase subunit NDUFA12 | - | Family |
Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage
InterPro: Protein Family Classification InterPro Database Homepage
Membrane Protein Annotation: OPM OPM Database Homepage
| Chains | External Link | Type | Class | Superfamily | Family |
|---|---|---|---|---|---|
| OPM | Transmembrane | Alpha-helical polytopic | Electron transport chain complex I (NADH dehydrogenase) and supercomplexes | H+ or Na+ translocating NADH dehydrogenase |














