Entry Database : PDB / ID : 7ar7 Structure visualization Downloads & linksTitle Cryo-EM structure of Arabidopsis thaliana complex-I (open conformation) Components(Acyl carrier protein ... ) x 2 (Gamma carbonic anhydrase ...) x 2 (NADH dehydrogenase [ubiquinone] 1 alpha subcomplex subunit ...) x 6 (NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit ...) x 6 (NADH dehydrogenase [ubiquinone] flavoprotein ...) x 2 (NADH dehydrogenase [ubiquinone] iron-sulfur protein ...) x 8 (NADH-ubiquinone oxidoreductase chain ...) x 7 (Probable NADH dehydrogenase [ubiquinone] 1 alpha subcomplex subunit ...) x 2 AT2G31490 protein At1g67350 At2g46540/F11C10.23 At4g16450 B14.5a ESSS subunit of NADH:ubiquinone oxidoreductase (Complex I) protein Excitatory amino acid transporter Gamma carbonic anhydrase-like 2, mitochondrial Transmembrane protein Uncharacterized protein At2g27730, mitochondrial unknown Show more 15 items Show less DetailsKeywords ELECTRON TRANSPORT / Complex-I ArabidopsisFunction / homology Function and homology informationFunction Domain/homology Component
anther dehiscence / vegetative to reproductive phase transition of meristem / cold acclimation / NADH dehydrogenase complex / Lyases; Carbon-oxygen lyases; Hydro-lyases / photorespiration / embryo development ending in seed dormancy / response to abscisic acid / plant-type vacuole / ubiquinone-6 biosynthetic process ... anther dehiscence / vegetative to reproductive phase transition of meristem / cold acclimation / NADH dehydrogenase complex / Lyases; Carbon-oxygen lyases; Hydro-lyases / photorespiration / embryo development ending in seed dormancy / response to abscisic acid / plant-type vacuole / ubiquinone-6 biosynthetic process / respiratory chain complex I / regulation of reactive oxygen species metabolic process / response to osmotic stress / plastid / cobalt ion binding / NADH dehydrogenase activity / NADH:ubiquinone reductase (H+-translocating) / protein homotrimerization / ubiquinone binding / mitochondrial respiratory chain complex I / mitochondrial electron transport, NADH to ubiquinone / mitochondrial respiratory chain complex I assembly / chloroplast thylakoid membrane / respirasome / acyl binding / electron transport coupled proton transport / NADH dehydrogenase (ubiquinone) activity / acyl carrier activity / quinone binding / ATP synthesis coupled electron transport / aerobic respiration / response to salt stress / respiratory electron transport chain / chloroplast / electron transport chain / mitochondrial membrane / carbonate dehydratase activity / mitochondrial intermembrane space / transmembrane transport / 2 iron, 2 sulfur cluster binding / fatty acid biosynthetic process / peroxisome / NAD binding / FMN binding / 4 iron, 4 sulfur cluster binding / response to oxidative stress / mitochondrial inner membrane / carbohydrate metabolic process / mitochondrial matrix / copper ion binding / protein-containing complex binding / nucleolus / mitochondrion / zinc ion binding / extracellular region / identical protein binding / metal ion binding / nucleus / plasma membrane / cytosol Similarity search - Function Putative NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 8, mitochondrial / NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 2, plant/fungi / At2g27730-like / NADH-ubiquinone oxidoreductase 11kDa subunit / NADH-ubiquinone oxidoreductase 11 kDa subunit / : / NADH-ubiquinone oxidoreductase, 21kDa subunit, N-terminal / NADH-ubiquinone oxidoreductase complex I, 21 kDa subunit / NAD(P)H-quinone oxidoreductase subunit 3, bacterial/plastid / NAD(P)H-quinone oxidoreductase, subunit N/subunit 2 ... Putative NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 8, mitochondrial / NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 2, plant/fungi / At2g27730-like / NADH-ubiquinone oxidoreductase 11kDa subunit / NADH-ubiquinone oxidoreductase 11 kDa subunit / : / NADH-ubiquinone oxidoreductase, 21kDa subunit, N-terminal / NADH-ubiquinone oxidoreductase complex I, 21 kDa subunit / NAD(P)H-quinone oxidoreductase subunit 3, bacterial/plastid / NAD(P)H-quinone oxidoreductase, subunit N/subunit 2 / NADH dehydrogenase [ubiquinone] iron-sulfur protein 6, mitochondrial / NADH-ubiquinone oxidoreductase, subunit 10 / NADH-ubiquinone oxidoreductase subunit 10 / Hexapeptide repeat / Soluble ligand binding domain / NADH dehydrogenase [ubiquinone] (complex I), alpha subcomplex subunit 1 / NADH-ubiquinone oxidoreductase MWFE subunit / SLBB domain / NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 10 / Zinc finger, CHCC-type / Zinc-finger domain / GRIM-19 / GRIM-19 protein / Bacterial transferase hexapeptide (six repeats) / NADH dehydrogenase subunit 5, C-terminal / NADH dehydrogenase subunit 5 C-terminus / NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 3 / NADH-ubiquinone oxidoreductase B12 subunit family / NDUFA6, LYR domain / NADH:ubiquinone oxidoreductase, NDUFS5-15kDa / NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 7, NDUB7 / NADH-ubiquinone oxidoreductase B18 subunit (NDUFB7) / NADH dehydrogenase ubiquinone Fe-S protein 4-like superfamily / NADH dehydrogenase ubiquinone Fe-S protein 4 / NADH dehydrogenase ubiquinone Fe-S protein 4, mitochondrial / NADH dehydrogenase [ubiquinone] (complex I), alpha subcomplex, subunit 2 / NDUFB9, LYR domain / NADH dehydrogenase [ubiquinone] 1 alpha subcomplex subunit 12 / NADH ubiquinone oxidoreductase subunit NDUFA12 / NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 9 / NADH dehydrogenase [ubiquinone] 1 alpha subcomplex subunit 5 / NADH:ubiquinone oxidoreductase, iron-sulphur subunit 5 / ETC complex I subunit conserved region / NADH dehydrogenase [ubiquinone] (complex I), alpha subcomplex, subunit 6 / NADH dehydrogenase [ubiquinone] (complex I), alpha subcomplex, subunit 8 / NADH-quinone oxidoreductase, chain G, C-terminal / NADH-ubiquinone oxidoreductase subunit G, C-terminal / Respiratory-chain NADH dehydrogenase 20 Kd subunit signature. / NADH-ubiquinone oxidoreductase, 20 Kd subunit / NADH-quinone oxidoreductase, chain I / NAD(P)H-quinone oxidoreductase subunit D/H / NADH:ubiquinone oxidoreductase, 49kDa subunit, conserved site / Respiratory chain NADH dehydrogenase 49 Kd subunit signature. / NADH-quinone oxidoreductase, subunit D / Respiratory-chain NADH dehydrogenase, 49 Kd subunit / NADH:ubiquinone oxidoreductase, subunit G / Respiratory-chain NADH dehydrogenase 75 Kd subunit signature 3. / Respiratory-chain NADH dehydrogenase 75 Kd subunit signature 2. / NADH-ubiquinone/plastoquinone oxidoreductase chain 6, subunit NuoJ / NADH dehydrogenase, subunit C / NADH ubiquinone oxidoreductase, F subunit / NADH-plastoquinone oxidoreductase, chain 5 subgroup / NADH:ubiquinone oxidoreductase, 30kDa subunit, conserved site / Respiratory chain NADH dehydrogenase 30 Kd subunit signature. / Trimeric LpxA-like superfamily / NADH-quinone oxidoreductase, chain M/4 / 2Fe-2S iron-sulfur cluster binding domain / Respiratory-chain NADH dehydrogenase 75 Kd subunit signature 1. / NADH-ubiquinone oxidoreductase chain 4L/K / NADH:ubiquinone/plastoquinone oxidoreductase, chain 6 / NADH-ubiquinone/plastoquinone oxidoreductase chain 6 / NADH:ubiquinone oxidoreductase, 75kDa subunit, conserved site / NADH:ubiquinone oxidoreductase, 30kDa subunit / NADH-Ubiquinone oxidoreductase (complex I), chain 5 N-terminal / NADH-quinone oxidoreductase, chain 5-like / NADH:ubiquinone oxidoreductase, 30kDa subunit superfamily / Respiratory-chain NADH dehydrogenase, 30 Kd subunit / NADH-Ubiquinone oxidoreductase (complex I), chain 5 N-terminus / NADH-ubiquinone oxidoreductase-G iron-sulfur binding region / NADH-ubiquinone oxidoreductase-G iron-sulfur binding region / Respiratory-chain NADH dehydrogenase 51 Kd subunit signature 1. / NADH-ubiquinone oxidoreductase chain 4L/Mnh complex subunit C1-like / NADH-ubiquinone/plastoquinone oxidoreductase chain 4L / NADH:ubiquinone/plastoquinone oxidoreductase, chain 3 / NADH:ubiquinone oxidoreductase, subunit 3 superfamily / NADH-ubiquinone/plastoquinone oxidoreductase, chain 3 / Respiratory-chain NADH dehydrogenase 24 Kd subunit signature. / NADH:ubiquinone oxidoreductase, subunit 1, conserved site / Respiratory-chain NADH dehydrogenase subunit 1 signature 1. / Respiratory-chain NADH dehydrogenase subunit 1 signature 2. / NADH:ubiquinone oxidoreductase, subunit 1/F420H2 oxidoreductase subunit H / NADH dehydrogenase / NuoE domain / CHCH / NADH:ubiquinone oxidoreductase / CHCH domain / NADH-quinone oxidoreductase subunit E-like / Thioredoxin-like [2Fe-2S] ferredoxin / NADH:quinone oxidoreductase/Mrp antiporter, membrane subunit / Proton-conducting membrane transporter Similarity search - Domain/homology Chem-8Q1 / FE2/S2 (INORGANIC) CLUSTER / FLAVIN MONONUCLEOTIDE / Chem-NDP / Chem-PC7 / Chem-PGT / 1,2-DICAPROYL-SN-PHOSPHATIDYL-L-SERINE / PHOSPHATIDYLETHANOLAMINE / IRON/SULFUR CLUSTER / Phosphatidylinositol ... Chem-8Q1 / FE2/S2 (INORGANIC) CLUSTER / FLAVIN MONONUCLEOTIDE / Chem-NDP / Chem-PC7 / Chem-PGT / 1,2-DICAPROYL-SN-PHOSPHATIDYL-L-SERINE / PHOSPHATIDYLETHANOLAMINE / IRON/SULFUR CLUSTER / Phosphatidylinositol / Ubiquinone-9 / NADH-ubiquinone oxidoreductase chain 6 / NADH-ubiquinone oxidoreductase chain 2 / NADH dehydrogenase [ubiquinone] flavoprotein 2, mitochondrial / NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 3-A / Acyl carrier protein 2, mitochondrial / NADH dehydrogenase [ubiquinone] iron-sulfur protein 5-A / NADH-ubiquinone oxidoreductase chain 5 / Acyl carrier protein 1, mitochondrial / NADH-ubiquinone oxidoreductase chain 3 / NADH-ubiquinone oxidoreductase chain 1 / NADH dehydrogenase [ubiquinone] iron-sulfur protein 2 / NADH-ubiquinone oxidoreductase chain 4 / NADH-ubiquinone oxidoreductase chain 4L / NADH dehydrogenase [ubiquinone] iron-sulfur protein 7, mitochondrial / NADH dehydrogenase [ubiquinone] iron-sulfur protein 8-A, mitochondrial / At4g16450 / NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 2 / NADH dehydrogenase [ubiquinone] 1 alpha subcomplex subunit 8-B / NADH dehydrogenase [ubiquinone] 1 alpha subcomplex subunit 13-A / Transmembrane protein / NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 9 / Excitatory amino acid transporter / NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 10-B / NADH dehydrogenase [ubiquinone] iron-sulfur protein 3 / Gamma carbonic anhydrase 2, mitochondrial / NADH dehydrogenase [ubiquinone] 1 alpha subcomplex subunit 1 / NADH dehydrogenase [ubiquinone] iron-sulfur protein 1, mitochondrial / NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 8, mitochondrial / NADH dehydrogenase [ubiquinone] 1 alpha subcomplex subunit 2 / NADH dehydrogenase [ubiquinone] iron-sulfur protein 4, mitochondrial / Probable NADH dehydrogenase [ubiquinone] 1 alpha subcomplex subunit 5, mitochondrial / NADH dehydrogenase [ubiquinone] flavoprotein 1, mitochondrial / Gamma carbonic anhydrase 1, mitochondrial / At1g67350 / NADH dehydrogenase [ubiquinone] 1 alpha subcomplex subunit 6 / NADH dehydrogenase [ubiquinone] iron-sulfur protein 6, mitochondrial / Probable NADH dehydrogenase [ubiquinone] 1 alpha subcomplex subunit 12 / At2g31490 / NADH dehydrogenase [ubiquinone] 1 alpha subcomplex subunit 9, mitochondrial / NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 7 / ESSS subunit of NADH:ubiquinone oxidoreductase (Complex I) protein / Gamma carbonic anhydrase-like 2, mitochondrial / At2g46540/F11C10.23 / Uncharacterized protein At2g27730, mitochondrial Similarity search - ComponentBiological species Arabidopsis thaliana (thale cress)Method ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution : 3.72 Å DetailsAuthors Klusch, N. / Kuelbrandt, W. Funding support Germany, 1items Details Hide detailsOrganization Grant number Country Max Planck Society Germany
CitationJournal : Plant Cell / Year : 2021Title : A ferredoxin bridge connects the two arms of plant mitochondrial complex I.Authors : Niklas Klusch / Jennifer Senkler / Özkan Yildiz / Werner Kühlbrandt / Hans-Peter Braun / Abstract : Mitochondrial complex I is the main site for electron transfer to the respiratory chain and generates much of the proton gradient across the inner mitochondrial membrane. Complex I is composed of two ... Mitochondrial complex I is the main site for electron transfer to the respiratory chain and generates much of the proton gradient across the inner mitochondrial membrane. Complex I is composed of two arms, which form a conserved L-shape. We report the structures of the intact, 47-subunit mitochondrial complex I from Arabidopsis thaliana and the 51-subunit complex I from the green alga Polytomella sp., both at around 2.9 Å resolution. In both complexes, a heterotrimeric γ-carbonic anhydrase domain is attached to the membrane arm on the matrix side. Two states are resolved in A. thaliana complex I, with different angles between the two arms and different conformations of the ND1 (NADH dehydrogenase subunit 1) loop near the quinol binding site. The angle appears to depend on a bridge domain, which links the peripheral arm to the membrane arm and includes an unusual ferredoxin. We propose that the bridge domain participates in regulating the activity of plant complex I. History Deposition Oct 23, 2020 Deposition site : PDBE / Processing site : PDBERevision 1.0 Mar 2, 2022 Provider : repository / Type : Initial release