Crystal structure of respiratory complex I from Thermus thermophilus
Domain Annotation: SCOP2 Classification SCOP2 Database Homepage
| Chains | Type | Family Name | Domain Identifier | Family Identifier | Provenance Source (Version) |
|---|---|---|---|---|---|
| A [auth 1] | SCOP2B Superfamily | Nqo1 FMN-binding domain-like | 8041341 | 3001265 | SCOP2B (2022-06-29) |
| A [auth 1] | SCOP2B Superfamily | Nqo1C-terminal domain-like | 8041340 | 3001171 | SCOP2B (2022-06-29) |
| A [auth 1] | SCOP2B Superfamily | Nqo1 middle domain-like | 8041342 | 3000871 | SCOP2B (2022-06-29) |
| N [auth A] | SCOP2B Superfamily | Nqo1 middle domain-like | 8041342 | 3000871 | SCOP2B (2022-06-29) |
| N [auth A] | SCOP2B Superfamily | Nqo1C-terminal domain-like | 8041340 | 3001171 | SCOP2B (2022-06-29) |
| N [auth A] | SCOP2B Superfamily | Nqo1 FMN-binding domain-like | 8041341 | 3001265 | SCOP2B (2022-06-29) |
| B [auth 2] | SCOP2B Superfamily | Thioredoxin-like | 8041344 | 3000031 | SCOP2B (2022-06-29) |
| O [auth B] | SCOP2B Superfamily | Thioredoxin-like | 8041344 | 3000031 | SCOP2B (2022-06-29) |
| C [auth 3] | SCOP2B Superfamily | Formate dehydrogenase/DMSO reductase, domains 1-3 | 8041346 | 3001453 | SCOP2B (2022-06-29) |
| C [auth 3] | SCOP2B Superfamily | ADC-like | 8041345 | 3001132 | SCOP2B (2022-06-29) |
| C [auth 3] | SCOP2B Superfamily | 2Fe-2S ferredoxin-like | 8041347 | 3000113 | SCOP2B (2022-06-29) |
| C [auth 3] | SCOP2B Superfamily | 4Fe-4S ferredoxins | 8041348 | 3000020 | SCOP2B (2022-06-29) |
| P [auth C] | SCOP2B Superfamily | 4Fe-4S ferredoxins | 8041348 | 3000020 | SCOP2B (2022-06-29) |
| P [auth C] | SCOP2B Superfamily | Formate dehydrogenase/DMSO reductase, domains 1-3 | 8041346 | 3001453 | SCOP2B (2022-06-29) |
| P [auth C] | SCOP2B Superfamily | ADC-like | 8041345 | 3001132 | SCOP2B (2022-06-29) |
| P [auth C] | SCOP2B Superfamily | 2Fe-2S ferredoxin-like | 8041347 | 3000113 | SCOP2B (2022-06-29) |
| Q [auth D] | SCOP2B Superfamily | HydB/Nqo4-like | 8041349 | 3001849 | SCOP2B (2022-06-29) |
| D [auth 4] | SCOP2B Superfamily | HydB/Nqo4-like | 8041349 | 3001849 | SCOP2B (2022-06-29) |
| F [auth 6] | SCOP2B Superfamily | Nqo6/HydA N-terminal domain-like | 8041352 | 3002291 | SCOP2B (2022-06-29) |
| S [auth F] | SCOP2B Superfamily | Nqo6/HydA N-terminal domain-like | 8041352 | 3002291 | SCOP2B (2022-06-29) |
| G [auth 9] | SCOP2B Superfamily | 4Fe-4S ferredoxins | 8041354 | 3000020 | SCOP2B (2022-06-29) |
| T [auth G] | SCOP2B Superfamily | 4Fe-4S ferredoxins | 8041354 | 3000020 | SCOP2B (2022-06-29) |
| H [auth 7] | SCOP2B Superfamily | Frataxin/Nqo15-like | 8041353 | 3001840 | SCOP2B (2022-06-29) |
| U [auth J] | SCOP2B Superfamily | Frataxin/Nqo15-like | 8041353 | 3001840 | SCOP2B (2022-06-29) |
| E [auth 5] | SCOP2B Superfamily | Nqo5-like | 8041351 | 3001071 | SCOP2B (2022-06-29) |
| R [auth E] | SCOP2B Superfamily | Nqo5-like | 8041351 | 3001071 | SCOP2B (2022-06-29) |
Domain Annotation: ECOD Classification ECOD Database Homepage
| Chains | Family Name | Domain Identifier | Architecture | Possible Homology | Homology | Topology | Family | Provenance Source (Version) |
|---|---|---|---|---|---|---|---|---|
| A [auth 1] | PBP | e3m9s11 | A: alpha bundles | X: Lipocalins/Streptavidin | H: Immunoglobulin-related | T: PEBP-like | F: PBP | ECOD (develop294) |
| N [auth A] | PBP | e3m9sA1 | A: alpha bundles | X: Lipocalins/Streptavidin | H: Immunoglobulin-related | T: PEBP-like | F: PBP | ECOD (develop294) |
| B [auth 2] | Pyrid_oxidase_2 | e3m9s21 | A: alpha bundles | X: PBZ domain | H: PBZ domain | T: PBZ domain | F: Pyrid_oxidase_2 | ECOD (develop294) |
| O [auth B] | Pyrid_oxidase_2 | e3m9sB1 | A: alpha bundles | X: PBZ domain | H: PBZ domain | T: PBZ domain | F: Pyrid_oxidase_2 | ECOD (develop294) |
| C [auth 3] | PBP | e3m9s34 | A: alpha bundles | X: Lipocalins/Streptavidin | H: Immunoglobulin-related | T: PEBP-like | F: PBP | ECOD (develop294) |
| C [auth 3] | Chorismate_bind | e3m9s37 | A: alpha bundles | X: Subtilisin-like | H: Subtilisin-like | T: Subtilisin-like | F: Chorismate_bind | ECOD (develop294) |
| C [auth 3] | EF-hand_1, EF-hand_7 | e3m9s35 | A: alpha bundles | X: P-loop domains-like | H: Rubredoxin-related | T: Rubredoxin-related | F: EF-hand_1, EF-hand_7 | ECOD (develop294) |
| P [auth C] | PBP | e3m9sC4 | A: alpha bundles | X: Lipocalins/Streptavidin | H: Immunoglobulin-related | T: PEBP-like | F: PBP | ECOD (develop294) |
| P [auth C] | Chorismate_bind | e3m9sC7 | A: alpha bundles | X: Subtilisin-like | H: Subtilisin-like | T: Subtilisin-like | F: Chorismate_bind | ECOD (develop294) |
| P [auth C] | EF-hand_1, EF-hand_7 | e3m9sC5 | A: alpha bundles | X: P-loop domains-like | H: Rubredoxin-related | T: Rubredoxin-related | F: EF-hand_1, EF-hand_7 | ECOD (develop294) |
| Q [auth D] | Ribonuc_L-PSP | e3m9sD4 | A: alpha bundles | X: Fusion glycoprotein F2 | H: HTH | T: winged helix domain | F: Ribonuc_L-PSP | ECOD (develop294) |
| D [auth 4] | Ribonuc_L-PSP | e3m9s44 | A: alpha bundles | X: Fusion glycoprotein F2 | H: HTH | T: winged helix domain | F: Ribonuc_L-PSP | ECOD (develop294) |
| F [auth 6] | PBP | e3m9s61 | A: alpha bundles | X: Lipocalins/Streptavidin | H: Immunoglobulin-related | T: PEBP-like | F: PBP | ECOD (develop294) |
| S [auth F] | PBP | e3m9sF1 | A: alpha bundles | X: Lipocalins/Streptavidin | H: Immunoglobulin-related | T: PEBP-like | F: PBP | ECOD (develop294) |
| G [auth 9] | PBP | e3m9s91 | A: alpha bundles | X: Lipocalins/Streptavidin | H: Immunoglobulin-related | T: PEBP-like | F: PBP | ECOD (develop294) |
| T [auth G] | PBP | e3m9sG1 | A: alpha bundles | X: Lipocalins/Streptavidin | H: Immunoglobulin-related | T: PEBP-like | F: PBP | ECOD (develop294) |
| H [auth 7] | PBP | e3m9s71 | A: alpha bundles | X: Lipocalins/Streptavidin | H: Immunoglobulin-related | T: PEBP-like | F: PBP | ECOD (develop294) |
| U [auth J] | PBP | e3m9sJ1 | A: alpha bundles | X: Lipocalins/Streptavidin | H: Immunoglobulin-related | T: PEBP-like | F: PBP | ECOD (develop294) |
| E [auth 5] | PBP | e3m9s51 | A: alpha bundles | X: Lipocalins/Streptavidin | H: Immunoglobulin-related | T: PEBP-like | F: PBP | ECOD (develop294) |
| R [auth E] | PBP | e3m9sE1 | A: alpha bundles | X: Lipocalins/Streptavidin | H: Immunoglobulin-related | T: PEBP-like | F: PBP | ECOD (develop294) |
Protein Family Annotation Pfam Database Homepage
| Chains | Accession | Name | Description | Comments | Source |
|---|---|---|---|---|---|
| A [auth 1], N [auth A] | PF10531 | SLBB domain (SLBB) | SLBB domain | Domain | |
| A [auth 1], N [auth A] | 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 |
| A [auth 1], N [auth A] | PF10589 | NADH-ubiquinone oxidoreductase-F iron-sulfur binding region (NADH_4Fe-4S) | NADH-ubiquinone oxidoreductase-F iron-sulfur binding region | Domain | |
| B [auth 2], O [auth B] | PF01257 | Thioredoxin-like [2Fe-2S] ferredoxin (2Fe-2S_thioredx) | Thioredoxin-like [2Fe-2S] ferredoxin | - | Family |
| C [auth 3], P [auth C] | PF01568 | Molydopterin dinucleotide binding domain (Molydop_binding) | Molydopterin dinucleotide binding domain | This domain is found in various molybdopterin - containing oxidoreductases and tungsten formylmethanofuran dehydrogenase subunit d (FwdD) and molybdenum formylmethanofuran dehydrogenase subunit (FmdD); where the domain constitutes almost the entire s ... | Domain |
| C [auth 3], P [auth C] | PF04879 | Molybdopterin oxidoreductase Fe4S4 domain (Molybdop_Fe4S4) | 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 [1]. | Domain |
| C [auth 3], P [auth C] | PF00384 | Molybdopterin oxidoreductase (Molybdopterin) | Molybdopterin oxidoreductase | Domain | |
| C [auth 3], P [auth C] | PF00111 | 2Fe-2S iron-sulfur cluster binding domain (Fer2) | 2Fe-2S iron-sulfur cluster binding domain | Domain | |
| C [auth 3], P [auth C] | 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 3], P [auth C] | 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 4], Q [auth D] | PF00346 | Respiratory-chain NADH dehydrogenase, 49 Kd subunit (Complex1_49kDa) | Respiratory-chain NADH dehydrogenase, 49 Kd subunit | - | Family |
| F [auth 6], S [auth F] | PF01058 | NADH ubiquinone oxidoreductase, 20 Kd subunit (Oxidored_q6) | NADH ubiquinone oxidoreductase, 20 Kd subunit | Domain | |
| G [auth 9], T [auth G] | PF00037 | 4Fe-4S binding domain (Fer4) | 4Fe-4S binding 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 |
| H [auth 7], U [auth J] | PF11497 | NADH-quinone oxidoreductase chain 15 (NADH_Oxid_Nqo15) | NADH-quinone oxidoreductase chain 15 | - | Family |
| E [auth 5], R [auth E] | PF00329 | Respiratory-chain NADH dehydrogenase, 30 Kd subunit (Complex1_30kDa) | Respiratory-chain NADH dehydrogenase, 30 Kd subunit | Domain | |
Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage
InterPro: Protein Family Classification InterPro Database Homepage
Membrane Protein Annotation: PDBTM PDBTM Database Homepage
| Chains | External Link | Comment |
|---|---|---|
| PDBTM | Annotated as membrane protein by PDBTM |
Membrane Protein Annotation: mpstruc mpstruc Database Homepage
| Chains | Resource Link | Group | Subgroup | Protein |
|---|---|---|---|---|
| mpstruc | TRANSMEMBRANE PROTEINS: ALPHA-HELICAL | Electron Transport Chain Complexes: Complex I | Complex I complete |














