Cryo-EM structure of respiratory super-complex CI+III2 from Tetrahymena thermophila
Domain Annotation: SCOP2 Classification SCOP2 Database Homepage
| Chains | Type | Family Name | Domain Identifier | Family Identifier | Provenance Source (Version) |
|---|---|---|---|---|---|
| IB [auth S2] | SCOP2 Family | Nqo4-like | 8107319 | 4000433 | SCOP2 (2022-06-29) |
| IB [auth S2] | SCOP2 Superfamily | HydB/Nqo4-like | 8107320 | 3001849 | SCOP2 (2022-06-29) |
| MB [auth S7] | SCOP2 Family | Nq06/HydA N-terminal domain-like | 8107321 | 4007641 | SCOP2 (2022-06-29) |
| MB [auth S7] | SCOP2 Superfamily | Nqo6/HydA N-terminal domain-like | 8107322 | 3002291 | SCOP2 (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] | NADHdh | e7tgh11 | 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: NADHdh | ECOD (1.6) |
| K [auth 3F] | UCR_hinge | e7tgh3F1 | A: alpha bundles | X: cytochrome bc1 complex 11 kDa protein-like | H: Non-heme 11 kDa protein of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase) (From Topology) | T: Non-heme 11 kDa protein of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase) | F: UCR_hinge | ECOD (1.6) |
| V [auth 3f] | UCR_hinge | e7tgh3f1 | A: alpha bundles | X: cytochrome bc1 complex 11 kDa protein-like | H: Non-heme 11 kDa protein of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase) (From Topology) | T: Non-heme 11 kDa protein of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase) | F: UCR_hinge | ECOD (1.6) |
| CA [auth 4] | Proton_antipo_M | e7tgh41 | 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: Proton_antipo_M | ECOD (1.6) |
| DA [auth 4L] | Oxidored_q2 | e7tgh4L1 | 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: Oxidored_q2 | ECOD (1.6) |
| EA [auth 5] | Proton_antipo_M | e7tgh51 | 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: Proton_antipo_M | ECOD (1.6) |
| HA [auth A2] | L51_S25_CI-B8 | e7tghA21 | A: a+b three layers | X: Thioredoxin-like | H: Thioredoxin-like (From Topology) | T: Thioredoxin-like | F: L51_S25_CI-B8 | ECOD (1.6) |
| LA [auth A9] | NmrA | e7tghA91 | A: a/b three-layered sandwiches | X: Rossmann-like | H: Rossmann-related | T: NAD(P)-binding Rossmann-fold domains | F: NmrA | ECOD (1.6) |
| ZA [auth FX] | Fer2 | e7tghFX1 | A: a+b two layers | X: beta-Grasp | H: Ubiquitin-related | T: Ubiquitin-like | F: Fer2 | ECOD (1.6) |
| HB [auth S1] | PRK09129 | e7tghS14 | A: a+b two layers | X: 4Fe-4S ferredoxin (From Topology) | H: 4Fe-4S ferredoxin (From Topology) | T: 4Fe-4S ferredoxin | F: PRK09129 | ECOD (1.6) |
| HB [auth S1] | Fer2_4 | e7tghS15 | A: a+b two layers | X: beta-Grasp | H: Ubiquitin-related | T: Ubiquitin-like | F: Fer2_4 | ECOD (1.6) |
| HB [auth S1] | Molybdop_Fe4S4_1 | e7tghS16 | 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: Molybdop_Fe4S4_1 | ECOD (1.6) |
| HB [auth S1] | Molybdopterin_2nd | e7tghS13 | 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: Molybdopterin_2nd | ECOD (1.6) |
| HB [auth S1] | Molybdopterin_1st | e7tghS12 | 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: Molybdopterin_1st | ECOD (1.6) |
| HB [auth S1] | NADH-G_4Fe-4S_3 | e7tghS11 | 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: NADH-G_4Fe-4S_3 | ECOD (1.6) |
| JB [auth S3] | Complex1_30kDa | e7tghS31 | A: a+b two layers | X: Nqo5-like | H: Nqo5-like (From Topology) | T: Nqo5-like | F: Complex1_30kDa | ECOD (1.6) |
| MB [auth S7] | Oxidored_q6 | e7tghS71 | A: a/b three-layered sandwiches | X: Flavodoxin-like | H: Class I glutamine amidotransferase-like | T: CheY-like | F: Oxidored_q6 | ECOD (1.6) |
| PB [auth TX] | Thioredoxin | e7tghTX1 | A: a+b three layers | X: Thioredoxin-like | H: Thioredoxin-like (From Topology) | T: Thioredoxin-like | F: Thioredoxin | ECOD (1.6) |
| SB [auth V1] | NADH_4Fe-4S | e7tghV13 | A: alpha bundles | X: Bromodomain-like | H: Nqo1C-terminal domain-like (From Topology) | T: Nqo1C-terminal domain-like | F: NADH_4Fe-4S | ECOD (1.6) |
| SB [auth V1] | SLBB | e7tghV12 | A: a+b two layers | X: beta-Grasp | H: Ubiquitin-related | T: Nqo1 middle domain-like | F: SLBB | ECOD (1.6) |
| SB [auth V1] | Complex1_51K | e7tghV11 | 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: Complex1_51K | ECOD (1.6) |
| G [auth 3B] | F_UNCLASSIFIED | e7tgh3B2 | A: a+b two layers | X: LuxS, MPP, ThrRS/AlaRS common domain | H: LuxS, MPP, ThrRS/AlaRS common domain | T: LuxS/MPP-like metallohydrolase | F: F_UNCLASSIFIED | ECOD (1.6) |
| GC [auth S5] | Ndufs5 | e7tghS51 | A: alpha bundles | X: cytochrome bc1 complex 11 kDa protein-like | H: CHCH domain (From Topology) | T: CHCH domain | F: Ndufs5 | ECOD (1.6) |
Protein Family Annotation Pfam Database Homepage
| Chains | Accession | Name | Description | Comments | Source |
|---|---|---|---|---|---|
| A [auth 1] | PF00146 | NADH dehydrogenase (NADHdh) | NADH dehydrogenase | - | Family |
| J [auth 3E], U [auth 3e] | PF00355 | Rieske [2Fe-2S] domain (Rieske) | Rieske [2Fe-2S] domain | The rieske domain has a [2Fe-2S] centre. Two conserved cysteines coordinate one Fe ion, while the other Fe ion is coordinated by two conserved histidines. In hyperthermophilic archaea there is a SKTPCX(2-3)C motif at the C-terminus. The cysteines in ... | Domain |
| K [auth 3F], V [auth 3f] | PF02320 | Ubiquinol-cytochrome C reductase hinge protein (UCR_hinge) | Ubiquinol-cytochrome C reductase hinge protein | The ubiquinol-cytochrome C reductase complex (cytochrome bc1 complex) is a respiratory multienzyme complex [1]. This Pfam family represents the 'hinge' protein of the complex which is thought to mediate formation of the cytochrome c1 and cytochrome c ... | Domain |
| CA [auth 4] | 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 |
| B [auth 1B] | PF00146 | NADH dehydrogenase (NADHdh) | NADH dehydrogenase | - | Family |
| EA [auth 5] | 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 |
| HA [auth A2] | PF05047 | Mitochondrial ribosomal protein L51 / S25 / CI-B8 domain (L51_S25_CI-B8) | Mitochondrial ribosomal protein L51 / S25 / CI-B8 domain | The proteins in this family are located in the mitochondrion. The family includes ribosomal protein L51, and S25. This family also includes mitochondrial NADH-ubiquinone oxidoreductase B8 subunit (CI-B8) EC:1.6.5.3. It is not known whether all member ... | Domain |
| IA [auth A5] | PF04716 | ETC complex I subunit conserved region (ETC_C1_NDUFA5) | ETC complex I subunit conserved region | - | Family |
| LA [auth A9] | PF01370 | NAD dependent epimerase/dehydratase family (Epimerase) | NAD dependent epimerase/dehydratase family | - | Family |
| MA [auth AB] | 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 |
| C [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 |
| NA [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 |
| OA [auth AL] | PF05071 | NADH ubiquinone oxidoreductase subunit NDUFA12 (NDUFA12) | NADH ubiquinone oxidoreductase subunit NDUFA12 | - | Family |
| UA [auth C1] | PF00132 | Bacterial transferase hexapeptide (six repeats) (Hexapep) | Bacterial transferase hexapeptide (six repeats) | - | Repeat |
| VA [auth C2] | PF21711 | Dynactin subunit 5 (DCTN5) | Dynactin subunit 5 | - | Repeat |
| WA [auth C3] | PF00132 | Bacterial transferase hexapeptide (six repeats) (Hexapep) | Bacterial transferase hexapeptide (six repeats) | - | Repeat |
| D [auth 2B] | 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 |
| YA [auth J1] | PF00226 | DnaJ domain (DnaJ) | DnaJ domain | DnaJ domains (J-domains) are associated with hsp70 heat-shock system and it is thought that this domain mediates the interaction. DnaJ-domain is therefore part of a chaperone (protein folding) system. The T-antigens, although not in Prosite are conf ... | Domain |
| ZA [auth FX] | PF00111 | 2Fe-2S iron-sulfur cluster binding domain (Fer2) | 2Fe-2S iron-sulfur cluster binding domain | Domain | |
| AB [auth T2] | PF00501 | AMP-binding enzyme (AMP-binding) | AMP-binding enzyme | - | Family |
| BB [auth T1] | PF02684 | Lipid-A-disaccharide synthetase (LpxB) | Lipid-A-disaccharide synthetase | - | Family |
| DB [auth X1] | PF10785 | NADH-ubiquinone oxidoreductase complex I, 21 kDa subunit (NADH-u_ox-rdase) | NADH-ubiquinone oxidoreductase complex I, 21 kDa subunit | This family is the N-terminal domain of NADH-ubiquinone oxidoreductase 21 kDa subunits from fungi, lower metazoa and plants. | Domain |
| E [auth 3] | PF00507 | NADH-ubiquinone/plastoquinone oxidoreductase, chain 3 (Oxidored_q4) | NADH-ubiquinone/plastoquinone oxidoreductase, chain 3 | - | Family |
| HB [auth S1] | PF00384 | Molybdopterin oxidoreductase (Molybdopterin) | Molybdopterin oxidoreductase | Domain | |
| HB [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 |
| HB [auth S1] | PF09326 | NADH-ubiquinone oxidoreductase subunit G, C-terminal (NADH_dhqG_C) | NADH-ubiquinone oxidoreductase subunit G, C-terminal | - | Family |
| HB [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 |
| HB [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 | |
| IB [auth S2] | PF00346 | Respiratory-chain NADH dehydrogenase, 49 Kd subunit (Complex1_49kDa) | Respiratory-chain NADH dehydrogenase, 49 Kd subunit | - | Family |
| JB [auth S3] | PF00329 | Respiratory-chain NADH dehydrogenase, 30 Kd subunit (Complex1_30kDa) | Respiratory-chain NADH dehydrogenase, 30 Kd subunit | Domain | |
| KB [auth S4] | PF04800 | NADH dehydrogenase ubiquinone Fe-S protein 4 (NDUS4) | NADH dehydrogenase ubiquinone Fe-S protein 4 | - | Family |
| LB [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 |
| MB [auth S7] | PF01058 | NADH ubiquinone oxidoreductase, 20 Kd subunit (Oxidored_q6) | NADH ubiquinone oxidoreductase, 20 Kd subunit | Domain | |
| NB [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 |
| PB [auth TX] | PF00085 | Thioredoxin (Thioredoxin) | Thioredoxin | Thioredoxins are small enzymes that participate in redox reactions, via the reversible oxidation of an active centre disulfide bond. Some members with only the active site are not separated from the noise. | Domain |
| F [auth 3A], Q [auth 3a] | PF05193 | Peptidase M16 inactive domain (Peptidase_M16_C) | Peptidase M16 inactive domain | Peptidase M16 consists of two structurally related domains. One is the active peptidase, whereas the other is inactive. The two domains hold the substrate like a clamp [1]. | Domain |
| SB [auth V1] | PF10531 | SLBB domain (SLBB) | SLBB domain | Domain | |
| SB [auth V1] | PF22461 | SLBB domain (SLBB_2) | SLBB domain | This entry represents a set of SLBB domains [5]. | Domain |
| SB [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 |
| SB [auth V1] | PF10589 | NADH-ubiquinone oxidoreductase-F iron-sulfur binding region (NADH_4Fe-4S) | NADH-ubiquinone oxidoreductase-F iron-sulfur binding region | Domain | |
| TB [auth V2] | PF01257 | Thioredoxin-like [2Fe-2S] ferredoxin (2Fe-2S_thioredx) | Thioredoxin-like [2Fe-2S] ferredoxin | - | Family |
| G [auth 3B], R [auth 3b] | PF05193 | Peptidase M16 inactive domain (Peptidase_M16_C) | Peptidase M16 inactive domain | Peptidase M16 consists of two structurally related domains. One is the active peptidase, whereas the other is inactive. The two domains hold the substrate like a clamp [1]. | Domain |
| G [auth 3B], R [auth 3b] | PF00675 | Insulinase (Peptidase family M16) (Peptidase_M16) | Insulinase (Peptidase family M16) | - | Family |
| H [auth 3C], S [auth 3c] | PF00033 | Cytochrome b/b6/petB (Cytochrome_B) | Cytochrome b/b6/petB | Domain | |
| I [auth 3D], T [auth 3d] | PF02167 | Cytochrome C1 family (Cytochrom_C1) | Cytochrome C1 family | - | Family |
