3M9S

Crystal structure of respiratory complex I from Thermus thermophilus

External Resource: Annotation

Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Membrane Protein Annotation: PDBTM

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)
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)
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)
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	4Fe-4S ferredoxins	8041348	3000020	SCOP2B (2022-06-29)
C [auth 3]	SCOP2B Superfamily	2Fe-2S ferredoxin-like	8041347	3000113	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)
D [auth 4]	SCOP2B Superfamily	HydB/Nqo4-like	8041349	3001849	SCOP2B (2022-06-29)
Q [auth D]	SCOP2B Superfamily	HydB/Nqo4-like	8041349	3001849	SCOP2B (2022-06-29)
R [auth E]	SCOP2B Superfamily	Nqo5-like	8041351	3001071	SCOP2B (2022-06-29)
E [auth 5]	SCOP2B Superfamily	Nqo5-like	8041351	3001071	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)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A [auth 1]	NADH_4Fe-4S	e3m9s11	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)
A [auth 1]	SLBB	e3m9s12	A: a+b two layers	X: beta-Grasp	H: Ubiquitin-related	T: Nqo1 middle domain-like	F: SLBB	ECOD (1.6)
A [auth 1]	Complex1_51K	e3m9s13	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)
N [auth A]	NADH_4Fe-4S	e3m9sA1	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)
N [auth A]	SLBB	e3m9sA2	A: a+b two layers	X: beta-Grasp	H: Ubiquitin-related	T: Nqo1 middle domain-like	F: SLBB	ECOD (1.6)
N [auth A]	Complex1_51K	e3m9sA3	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)
F [auth 6]	Oxidored_q6	e3m9s61	A: a/b three-layered sandwiches	X: Flavodoxin-like	H: Class I glutamine amidotransferase-like	T: CheY-like	F: Oxidored_q6	ECOD (1.6)
S [auth F]	Oxidored_q6	e3m9sF1	A: a/b three-layered sandwiches	X: Flavodoxin-like	H: Class I glutamine amidotransferase-like	T: CheY-like	F: Oxidored_q6	ECOD (1.6)
H [auth 7]	NADH_Oxid_Nqo15	e3m9s71	A: a+b two layers	X: Type III secretory system chaperone-like	H: Frataxin-like (From Topology)	T: Frataxin-like	F: NADH_Oxid_Nqo15	ECOD (1.6)
U [auth J]	NADH_Oxid_Nqo15	e3m9sJ1	A: a+b two layers	X: Type III secretory system chaperone-like	H: Frataxin-like (From Topology)	T: Frataxin-like	F: NADH_Oxid_Nqo15	ECOD (1.6)
B [auth 2]	2Fe-2S_thioredx_N	e3m9s22	A: alpha bundles	X: NQO2 helical bundle domain (From Topology)	H: NQO2 helical bundle domain (From Topology)	T: NQO2 helical bundle domain	F: 2Fe-2S_thioredx_N	ECOD (1.6)
B [auth 2]	2Fe-2S_thioredx_C	e3m9s21	A: a+b three layers	X: Thioredoxin-like	H: Thioredoxin-like (From Topology)	T: Thioredoxin-like	F: 2Fe-2S_thioredx_C	ECOD (1.6)
O [auth B]	2Fe-2S_thioredx_N	e3m9sB2	A: alpha bundles	X: NQO2 helical bundle domain (From Topology)	H: NQO2 helical bundle domain (From Topology)	T: NQO2 helical bundle domain	F: 2Fe-2S_thioredx_N	ECOD (1.6)
O [auth B]	2Fe-2S_thioredx_C	e3m9sB1	A: a+b three layers	X: Thioredoxin-like	H: Thioredoxin-like (From Topology)	T: Thioredoxin-like	F: 2Fe-2S_thioredx_C	ECOD (1.6)
C [auth 3]	Molydop_binding	e3m9s38	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: double psi	F: Molydop_binding	ECOD (1.6)
C [auth 3]	PRK09129	e3m9s37	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)
C [auth 3]	Fer2_4	e3m9s34	A: a+b two layers	X: beta-Grasp	H: Ubiquitin-related	T: Ubiquitin-like	F: Fer2_4	ECOD (1.6)
C [auth 3]	Molybdop_Fe4S4	e3m9s310	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	ECOD (1.6)
C [auth 3]	Molybdopterin_2nd	e3m9s36	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)
C [auth 3]	NuoG_2nd	e3m9s35	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: NuoG_2nd	ECOD (1.6)
C [auth 3]	NADH-G_4Fe-4S_3	e3m9s39	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)
P [auth C]	Molydop_binding	e3m9sC8	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: double psi	F: Molydop_binding	ECOD (1.6)
P [auth C]	PRK09129	e3m9sC7	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)
P [auth C]	Fer2_4	e3m9sC4	A: a+b two layers	X: beta-Grasp	H: Ubiquitin-related	T: Ubiquitin-like	F: Fer2_4	ECOD (1.6)
P [auth C]	Molybdop_Fe4S4	e3m9sC10	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	ECOD (1.6)
P [auth C]	Molybdopterin_2nd	e3m9sC6	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)
P [auth C]	NuoG_2nd	e3m9sC5	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: NuoG_2nd	ECOD (1.6)
P [auth C]	NADH-G_4Fe-4S_3	e3m9sC9	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)
D [auth 4]	Complex1_49kDa_1st	e3m9s46	A: alpha complex topology	X: alpha-helical domain in nickel-iron hydrogenase, large subunit (From Topology)	H: alpha-helical domain in nickel-iron hydrogenase, large subunit (From Topology)	T: alpha-helical domain in nickel-iron hydrogenase, large subunit	F: Complex1_49kDa_1st	ECOD (1.6)
D [auth 4]	NuoD	e3m9s45	A: a+b two layers	X: FAD-linked reductases, C-terminal domain-like	H: Ni-Fe binding domain in nickel-iron hydrogenase large subunit (From Topology)	T: Ni-Fe binding domain in nickel-iron hydrogenase large subunit	F: NuoD	ECOD (1.6)
D [auth 4]	Complex1_49kDa_2nd	e3m9s44	A: a+b two layers	X: FAD-linked reductases, C-terminal domain-like	H: Ni-Fe binding domain in nickel-iron hydrogenase large subunit (From Topology)	T: Ni-Fe binding domain in nickel-iron hydrogenase large subunit	F: Complex1_49kDa_2nd	ECOD (1.6)
Q [auth D]	Complex1_49kDa_1st	e3m9sD6	A: alpha complex topology	X: alpha-helical domain in nickel-iron hydrogenase, large subunit (From Topology)	H: alpha-helical domain in nickel-iron hydrogenase, large subunit (From Topology)	T: alpha-helical domain in nickel-iron hydrogenase, large subunit	F: Complex1_49kDa_1st	ECOD (1.6)
Q [auth D]	NuoD	e3m9sD5	A: a+b two layers	X: FAD-linked reductases, C-terminal domain-like	H: Ni-Fe binding domain in nickel-iron hydrogenase large subunit (From Topology)	T: Ni-Fe binding domain in nickel-iron hydrogenase large subunit	F: NuoD	ECOD (1.6)
Q [auth D]	Complex1_49kDa_2nd	e3m9sD4	A: a+b two layers	X: FAD-linked reductases, C-terminal domain-like	H: Ni-Fe binding domain in nickel-iron hydrogenase large subunit (From Topology)	T: Ni-Fe binding domain in nickel-iron hydrogenase large subunit	F: Complex1_49kDa_2nd	ECOD (1.6)
R [auth E]	Complex1_30kDa	e3m9sE1	A: a+b two layers	X: Nqo5-like	H: Nqo5-like (From Topology)	T: Nqo5-like	F: Complex1_30kDa	ECOD (1.6)
E [auth 5]	Complex1_30kDa	e3m9s51	A: a+b two layers	X: Nqo5-like	H: Nqo5-like (From Topology)	T: Nqo5-like	F: Complex1_30kDa	ECOD (1.6)
G [auth 9]	Fer4_21_1	e3m9s91	A: a+b two layers	X: 4Fe-4S ferredoxin (From Topology)	H: 4Fe-4S ferredoxin (From Topology)	T: 4Fe-4S ferredoxin	F: Fer4_21_1	ECOD (1.6)
T [auth G]	Fer4_21_1	e3m9sG1	A: a+b two layers	X: 4Fe-4S ferredoxin (From Topology)	H: 4Fe-4S ferredoxin (From Topology)	T: 4Fe-4S ferredoxin	F: Fer4_21_1	ECOD (1.6)

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	Respiratory-chain NADH dehydrogenase 51 Kd subunit (Complex1_51K)	Respiratory-chain NADH dehydrogenase 51 Kd subunit	-	Family
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
F [auth 6], S [auth F]	PF01058	NADH ubiquinone oxidoreductase, 20 Kd subunit (Oxidored_q6)	NADH ubiquinone oxidoreductase, 20 Kd subunit	-	Family
H [auth 7], U [auth J]	PF11497	NADH-quinone oxidoreductase chain 15 (NADH_Oxid_Nqo15)	NADH-quinone oxidoreductase chain 15	-	Family
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 entir ...	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 subunit. The formylmethanofuran dehydrogenase catalyses the first step in methane formation from CO2 in methanogenic archaea and has a molybdopterin dinucleotide cofactor [1]. This domain corresponds to the C-terminal domain IV in dimethyl sulfoxide (DMSO)reductase which interacts with the 2-amino pyrimidone ring of both molybdopterin guanine dinucleotide molecules [2].	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	-	Family
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]	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
E [auth 5], R [auth E]	PF00329	Respiratory-chain NADH dehydrogenase, 30 Kd subunit (Complex1_30kDa)	Respiratory-chain NADH dehydrogenase, 30 Kd subunit	-	Family
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

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A [auth 1], N [auth A]	NADH-quinone oxidoreductase subunit 1	binding nucleotide binding FMN binding nucleoside phosphate binding ion binding organic cyclic compound binding anion binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding small molecule binding electron transfer activity NADH dehydrogenase (ubiquinone) activity oxidoreduction-driven active transmembrane transporter activity binding nucleotide binding FMN binding nucleoside phosphate binding ion binding organic cyclic compound binding anion binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding small molecule binding electron transfer activity NADH dehydrogenase (ubiquinone) activity oxidoreduction-driven active transmembrane transporter activity active transmembrane transporter activity primary active transmembrane transporter activity transporter activity transmembrane transporter activity quinone binding NAD binding purine nucleotide binding adenyl nucleotide binding iron-sulfur cluster binding 4 iron, 4 sulfur cluster binding metal cluster binding cation binding metal ion binding	-	respiratory chain complex protein-containing complex catalytic complex membrane membrane protein complex cellular anatomical entity transporter complex NADH dehydrogenase complex transmembrane transporter complex respiratory chain complex I respirasome oxidoreductase complex cell periphery plasma membrane
F [auth 6], S [auth F]	NADH-quinone oxidoreductase subunit B	iron-sulfur cluster binding binding 4 iron, 4 sulfur cluster binding metal cluster binding small molecule binding cation binding transition metal ion binding iron ion binding ion binding metal ion binding electron transfer activity NADH dehydrogenase (ubiquinone) activity oxidoreduction-driven active transmembrane transporter activity active transmembrane transporter activity iron-sulfur cluster binding binding 4 iron, 4 sulfur cluster binding metal cluster binding small molecule binding cation binding transition metal ion binding iron ion binding ion binding metal ion binding electron transfer activity NADH dehydrogenase (ubiquinone) activity oxidoreduction-driven active transmembrane transporter activity active transmembrane transporter activity primary active transmembrane transporter activity transporter activity transmembrane transporter activity quinone binding	-	cell periphery plasma membrane membrane cellular anatomical entity
H [auth 7], U [auth J]	NADH-quinone oxidoreductase subunit 15	cation binding ferric iron binding transition metal ion binding iron ion binding ion binding binding metal ion binding small molecule binding quinone binding	cellular component biogenesis cellular component organization metallo-sulfur cluster assembly cellular component assembly iron-sulfur cluster assembly cellular process cellular component organization or biogenesis	cell periphery plasma membrane membrane cellular anatomical entity
J [auth M], W [auth P]	NADH-quinone oxidoreductase subunit 13	-	-	-
K [auth N], X [auth Q]	NADH-quinone oxidoreductase subunit 14	-	-	-
L [auth R], Y [auth S]	NADH-quinone oxidoreductase subunits 7, 10 and 11	-	-	-
M [auth H], Z [auth T]	NADH-quinone oxidoreductase subunit 8	-	-	-
B [auth 2], O [auth B]	NADH-quinone oxidoreductase subunit 2	oxidoreductase activity catalytic activity iron-sulfur cluster binding 2 iron, 2 sulfur cluster binding binding metal cluster binding small molecule binding cation binding ion binding metal ion binding quinone binding	-	cell periphery plasma membrane membrane cellular anatomical entity
C [auth 3], P [auth C]	NADH-quinone oxidoreductase subunit 3	iron-sulfur cluster binding 2 iron, 2 sulfur cluster binding binding metal cluster binding small molecule binding electron transfer activity NADH dehydrogenase (ubiquinone) activity oxidoreduction-driven active transmembrane transporter activity active transmembrane transporter activity primary active transmembrane transporter activity transporter activity transmembrane transporter activity quinone binding organic cyclic compound binding iron-sulfur cluster binding 2 iron, 2 sulfur cluster binding binding metal cluster binding small molecule binding electron transfer activity NADH dehydrogenase (ubiquinone) activity oxidoreduction-driven active transmembrane transporter activity active transmembrane transporter activity primary active transmembrane transporter activity transporter activity transmembrane transporter activity quinone binding organic cyclic compound binding molybdopterin cofactor binding 4 iron, 4 sulfur cluster binding cation binding ion binding metal ion binding	aerobic respiration cellular respiration oxidative phosphorylation energy derivation by oxidation of organic compounds cellular metabolic process ATP synthesis coupled electron transport electron transport chain generation of precursor metabolites and energy respiratory electron transport chain metabolic process cellular process	cell periphery plasma membrane membrane cellular anatomical entity
D [auth 4], Q [auth D]	NADH-quinone oxidoreductase subunit 4	NAD binding binding nucleoside phosphate binding purine nucleotide binding organic cyclic compound binding adenyl nucleotide binding nucleotide binding heterocyclic compound binding small molecule binding oxidoreductase activity NADH:ubiquinone reductase (non-electrogenic) activity oxidoreductase activity, acting on NAD(P)H catalytic activity oxidoreductase activity, acting on NAD(P)H, quinone or similar compound as acceptor NAD binding binding nucleoside phosphate binding purine nucleotide binding organic cyclic compound binding adenyl nucleotide binding nucleotide binding heterocyclic compound binding small molecule binding oxidoreductase activity NADH:ubiquinone reductase (non-electrogenic) activity oxidoreductase activity, acting on NAD(P)H catalytic activity oxidoreductase activity, acting on NAD(P)H, quinone or similar compound as acceptor NADH dehydrogenase activity quinone binding	-	cell periphery plasma membrane membrane cellular anatomical entity
E [auth 5], R [auth E]	NADH-quinone oxidoreductase subunit C	electron transfer activity NADH dehydrogenase (ubiquinone) activity oxidoreduction-driven active transmembrane transporter activity active transmembrane transporter activity primary active transmembrane transporter activity transporter activity transmembrane transporter activity binding quinone binding small molecule binding	-	cell periphery plasma membrane membrane cellular anatomical entity
G [auth 9], T [auth G]	NADH-quinone oxidoreductase subunit I	iron-sulfur cluster binding binding 4 iron, 4 sulfur cluster binding metal cluster binding small molecule binding cation binding transition metal ion binding iron ion binding ion binding metal ion binding oxidoreductase activity NADH:ubiquinone reductase (non-electrogenic) activity oxidoreductase activity, acting on NAD(P)H catalytic activity iron-sulfur cluster binding binding 4 iron, 4 sulfur cluster binding metal cluster binding small molecule binding cation binding transition metal ion binding iron ion binding ion binding metal ion binding oxidoreductase activity NADH:ubiquinone reductase (non-electrogenic) activity oxidoreductase activity, acting on NAD(P)H catalytic activity oxidoreductase activity, acting on NAD(P)H, quinone or similar compound as acceptor NADH dehydrogenase activity quinone binding	-	cell periphery plasma membrane membrane cellular anatomical entity
I [auth L], V [auth O]	NADH-quinone oxidoreductase subunit 12	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A [auth 1], N [auth A]	IPR019575	NADH-ubiquinone oxidoreductase 51kDa subunit, iron-sulphur binding domain	Domain
A [auth 1], N [auth A]	IPR019554	Soluble ligand binding domain	Domain
A [auth 1], N [auth A]	IPR011537	NADH ubiquinone oxidoreductase, F subunit	Family
A [auth 1], N [auth A]	IPR001949	NADH:ubiquinone oxidoreductase, 51kDa subunit, conserved site	Conserved Site
A [auth 1], N [auth A]	IPR037225	NADH-ubiquinone oxidoreductase 51kDa subunit, FMN-binding domain superfamily	Homologous Superfamily
A [auth 1], N [auth A]	IPR037207	NADH-ubiquinone oxidoreductase 51kDa subunit, iron-sulphur binding domain superfamily	Homologous Superfamily
A [auth 1], N [auth A]	IPR011538	NADH-ubiquinone oxidoreductase 51kDa subunit, FMN-binding domain	Domain
F [auth 6], S [auth F]	IPR006138	NADH-ubiquinone oxidoreductase, 20 Kd subunit	Family
F [auth 6], S [auth F]	IPR006137	NADH:ubiquinone oxidoreductase-like, 20kDa subunit	Domain
H [auth 7], U [auth J]	IPR021093	NADH-quinone oxidoreductase, subunit15	Family
H [auth 7], U [auth J]	IPR038458	NADH-quinone oxidoreductase, subunit 15 superfamily	Homologous Superfamily
H [auth 7], U [auth J]	IPR036524	Frataxin/CyaY superfamily	Homologous Superfamily
B [auth 2], O [auth B]	IPR042128	NuoE domain	Domain
B [auth 2], O [auth B]	IPR002023	NADH-quinone oxidoreductase subunit E-like	Family
B [auth 2], O [auth B]	IPR041921	NADH-quinone oxidoreductase subunit E, N-terminal	Homologous Superfamily
B [auth 2], O [auth B]	IPR036249	Thioredoxin-like superfamily	Homologous Superfamily
C [auth 3], P [auth C]	IPR006963	Molybdopterin oxidoreductase, 4Fe-4S domain	Domain
C [auth 3], P [auth C]	IPR006657	Molybdopterin dinucleotide-binding domain	Domain
C [auth 3], P [auth C]	IPR001387	Cro/C1-type helix-turn-helix domain	Domain
C [auth 3], P [auth C]	IPR006656	Molybdopterin oxidoreductase	Domain
C [auth 3], P [auth C]	IPR036010	2Fe-2S ferredoxin-like superfamily	Homologous Superfamily
C [auth 3], P [auth C]	IPR001041	2Fe-2S ferredoxin-type iron-sulfur binding domain	Domain
C [auth 3], P [auth C]	IPR000283	NADH:ubiquinone oxidoreductase, 75kDa subunit, conserved site	Conserved Site
C [auth 3], P [auth C]	IPR010228	NADH:ubiquinone oxidoreductase, subunit G	Family
C [auth 3], P [auth C]	IPR009010	Aspartate decarboxylase-like domain superfamily	Homologous Superfamily
C [auth 3], P [auth C]	IPR019574	NADH:ubiquinone oxidoreductase, subunit G, iron-sulphur binding	Domain
D [auth 4], Q [auth D]	IPR022885	NAD(P)H-quinone oxidoreductase subunit D/H	Family
D [auth 4], Q [auth D]	IPR014029	NADH:ubiquinone oxidoreductase, 49kDa subunit, conserved site	Conserved Site
D [auth 4], Q [auth D]	IPR029014	[NiFe]-hydrogenase, large subunit	Homologous Superfamily
D [auth 4], Q [auth D]	IPR001135	NADH-quinone oxidoreductase, subunit D	Domain
E [auth 5], R [auth E]	IPR037232	NADH:ubiquinone oxidoreductase, 30kDa subunit superfamily	Homologous Superfamily
E [auth 5], R [auth E]	IPR001268	NADH:ubiquinone oxidoreductase, 30kDa subunit	Domain
E [auth 5], R [auth E]	IPR020396	NADH:ubiquinone oxidoreductase, 30kDa subunit, conserved site	Conserved Site
E [auth 5], R [auth E]	IPR010218	NADH dehydrogenase, subunit C	Family
G [auth 9], T [auth G]	IPR017900	4Fe-4S ferredoxin, iron-sulphur binding, conserved site	Conserved Site
G [auth 9], T [auth G]	IPR017896	4Fe-4S ferredoxin-type, iron-sulphur binding domain	Domain
G [auth 9], T [auth G]	IPR010226	NADH-quinone oxidoreductase, chain I	Family

Membrane Protein Annotation: PDBTM PDBTM Database Homepage

Chains	External Link	Comment
A [auth 1], B [auth 2], C [auth 3], D [auth 4], E [auth 5] A [auth 1], B [auth 2], C [auth 3], D [auth 4], E [auth 5], F [auth 6], G [auth 9], H [auth 7], N [auth A], O [auth B], P [auth C], Q [auth D], R [auth E], S [auth F], T [auth G], U [auth J]	PDBTM	Annotated as membrane protein by PDBTM

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3M9S

Crystal structure of respiratory complex I from Thermus thermophilus

External Resource: Annotation

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Domain Annotation: ECOD Classification ECOD Database Homepage

Protein Family Annotation Pfam Database Homepage

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

InterPro: Protein Family Classification InterPro Database Homepage

Membrane Protein Annotation: PDBTM PDBTM Database Homepage