Entry Database : PDB / ID : 6y11 Structure visualization Downloads & linksTitle Respiratory complex I from Thermus thermophilus Components(NADH-quinone oxidoreductase subunit ...) x 15 DUF3197 domain-containing protein DetailsKeywords MEMBRANE PROTEIN / Respiratory chain / complex I / NADH:ubiquinone oxidoreductase / electron transfer / proton translocationFunction / homology Function and homology informationFunction Domain/homology Component
NADH dehydrogenase complex / : / NADH:ubiquinone reductase (non-electrogenic) activity / Translocases; Catalysing the translocation of protons; Linked to oxidoreductase reactions / oxidoreductase activity, acting on NAD(P)H, quinone or similar compound as acceptor / molybdopterin cofactor binding / respiratory chain complex I / iron-sulfur cluster assembly / NADH dehydrogenase activity / ubiquinone binding ... NADH dehydrogenase complex / : / NADH:ubiquinone reductase (non-electrogenic) activity / Translocases; Catalysing the translocation of protons; Linked to oxidoreductase reactions / oxidoreductase activity, acting on NAD(P)H, quinone or similar compound as acceptor / molybdopterin cofactor binding / respiratory chain complex I / iron-sulfur cluster assembly / NADH dehydrogenase activity / ubiquinone binding / quinone binding / electron transport coupled proton transport / ATP synthesis coupled electron transport / ferric iron binding / NADH dehydrogenase (ubiquinone) activity / aerobic respiration / 2 iron, 2 sulfur cluster binding / NAD binding / FMN binding / 4 iron, 4 sulfur cluster binding / iron ion binding / metal ion binding / plasma membrane Similarity search - Function Domain of unknown function DUF3197 / TTHA1528-like superfamily / Protein of unknown function (DUF3197) / NADH-quinone oxidoreductase, subunit15 / NADH-quinone oxidoreductase, subunit 15 superfamily / NADH-quinone oxidoreductase chain 15 / Frataxin/CyaY superfamily / NAD(P)H-quinone oxidoreductase subunit 3, bacterial/plastid / NAD(P)H-quinone oxidoreductase, subunit N/subunit 2 / Molybdopterin oxidoreductase Fe4S4 domain ... Domain of unknown function DUF3197 / TTHA1528-like superfamily / Protein of unknown function (DUF3197) / NADH-quinone oxidoreductase, subunit15 / NADH-quinone oxidoreductase, subunit 15 superfamily / NADH-quinone oxidoreductase chain 15 / Frataxin/CyaY superfamily / NAD(P)H-quinone oxidoreductase subunit 3, bacterial/plastid / NAD(P)H-quinone oxidoreductase, subunit N/subunit 2 / Molybdopterin oxidoreductase Fe4S4 domain / Molybdopterin oxidoreductase Fe4S4 domain / 4Fe-4S binding domain / Molybdopterin dinucleotide-binding domain / Molydopterin dinucleotide binding domain / Cro/C1-type helix-turn-helix domain / 2Fe-2S iron-sulfur cluster binding domain / Soluble ligand binding domain / SLBB domain / 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 ubiquinone oxidoreductase, F subunit / NADH dehydrogenase, subunit C / NADH-plastoquinone oxidoreductase, chain 5 subgroup / NADH-quinone oxidoreductase, chain M/4 / NADH:ubiquinone oxidoreductase, 30kDa subunit, conserved site / Respiratory chain NADH dehydrogenase 30 Kd subunit signature. / NADH-ubiquinone oxidoreductase chain 4L/K / NADH:ubiquinone/plastoquinone oxidoreductase, chain 6 / NADH-ubiquinone/plastoquinone oxidoreductase chain 6 / Respiratory-chain NADH dehydrogenase 75 Kd subunit signature 1. / 2Fe-2S iron-sulfur cluster binding domain / NADH-Ubiquinone oxidoreductase (complex I), chain 5 N-terminal / NADH-quinone oxidoreductase, chain 5-like / Aspartate decarboxylase-like domain superfamily / NADH-Ubiquinone oxidoreductase (complex I), chain 5 N-terminus / NADH:ubiquinone oxidoreductase, 75kDa subunit, conserved site / NADH:ubiquinone oxidoreductase, 30kDa subunit / NADH:ubiquinone oxidoreductase, 30kDa subunit superfamily / Respiratory-chain NADH dehydrogenase, 30 Kd subunit / NADH-ubiquinone oxidoreductase chain 4L/Mnh complex subunit C1-like / NADH-ubiquinone/plastoquinone oxidoreductase chain 4L / NADH-ubiquinone oxidoreductase-G iron-sulfur binding region / NADH-ubiquinone oxidoreductase-G iron-sulfur binding region / NADH:ubiquinone/plastoquinone oxidoreductase, chain 3 / NADH:ubiquinone oxidoreductase, subunit 3 superfamily / NADH-ubiquinone/plastoquinone oxidoreductase, chain 3 / NADH:ubiquinone oxidoreductase, subunit 1, conserved site / Respiratory-chain NADH dehydrogenase subunit 1 signature 1. / Respiratory-chain NADH dehydrogenase subunit 1 signature 2. / Respiratory-chain NADH dehydrogenase 51 Kd subunit signature 1. / NADH:ubiquinone oxidoreductase, subunit 1/F420H2 oxidoreductase subunit H / NADH dehydrogenase / NADH:ubiquinone oxidoreductase / Respiratory-chain NADH dehydrogenase 24 Kd subunit signature. / NADH:quinone oxidoreductase/Mrp antiporter, membrane subunit / NuoE domain / Proton-conducting membrane transporter / NADH:ubiquinone oxidoreductase, subunit G, iron-sulphur binding / His(Cys)3-ligated-type [4Fe-4S] domain profile. / NADH-quinone oxidoreductase subunit E-like / Thioredoxin-like [2Fe-2S] ferredoxin / NADH-quinone oxidoreductase subunit E, N-terminal / NADH:ubiquinone oxidoreductase, 51kDa subunit, conserved site / Respiratory-chain NADH dehydrogenase 51 Kd subunit signature 2. / NADH-ubiquinone oxidoreductase 51kDa subunit, iron-sulphur binding domain / NADH-ubiquinone oxidoreductase 51kDa subunit, iron-sulphur binding domain superfamily / NADH-ubiquinone oxidoreductase-F iron-sulfur binding region / NADH-ubiquinone oxidoreductase-F iron-sulfur binding region / NADH-ubiquinone oxidoreductase 51kDa subunit, FMN-binding domain / NADH-ubiquinone oxidoreductase 51kDa subunit, FMN-binding domain superfamily / Respiratory-chain NADH dehydrogenase 51 Kd subunit / Molybdopterin oxidoreductase, 4Fe-4S domain / Prokaryotic molybdopterin oxidoreductases 4Fe-4S domain profile. / NADH:ubiquinone oxidoreductase-like, 20kDa subunit / NADH ubiquinone oxidoreductase, 20 Kd subunit / Molybdopterin oxidoreductase / Molybdopterin oxidoreductase / [NiFe]-hydrogenase, large subunit / 4Fe-4S dicluster domain / 2Fe-2S ferredoxin-type iron-sulfur binding domain profile. / 2Fe-2S ferredoxin-type iron-sulfur binding domain / 2Fe-2S ferredoxin-like superfamily / 4Fe-4S ferredoxin, iron-sulphur binding, conserved site / 4Fe-4S ferredoxin-type iron-sulfur binding region signature. / 4Fe-4S ferredoxin-type iron-sulfur binding domain profile. / 4Fe-4S ferredoxin-type, iron-sulphur binding domain / Thioredoxin-like superfamily Similarity search - Domain/homology FE2/S2 (INORGANIC) CLUSTER / FLAVIN MONONUCLEOTIDE / IRON/SULFUR CLUSTER / NADH-quinone oxidoreductase subunit 7 / NADH-quinone oxidoreductase subunit 6 / NADH-quinone oxidoreductase subunit 5 / NADH-quinone oxidoreductase subunit 4 / NADH-quinone oxidoreductase subunit 2 / NADH-quinone oxidoreductase subunit 1 / NADH-quinone oxidoreductase subunit 3 ... FE2/S2 (INORGANIC) CLUSTER / FLAVIN MONONUCLEOTIDE / IRON/SULFUR CLUSTER / NADH-quinone oxidoreductase subunit 7 / NADH-quinone oxidoreductase subunit 6 / NADH-quinone oxidoreductase subunit 5 / NADH-quinone oxidoreductase subunit 4 / NADH-quinone oxidoreductase subunit 2 / NADH-quinone oxidoreductase subunit 1 / NADH-quinone oxidoreductase subunit 3 / NADH-quinone oxidoreductase subunit 9 / NADH-quinone oxidoreductase subunit 10 / NADH-quinone oxidoreductase subunit 11 / NADH-quinone oxidoreductase subunit 12 / NADH-quinone oxidoreductase subunit 13 / NADH-quinone oxidoreductase subunit 14 / Uncharacterized protein / NADH-quinone oxidoreductase subunit 15 / NADH-quinone oxidoreductase subunit 8 Similarity search - ComponentBiological species Thermus thermophilus (bacteria)Method X-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution : 3.109 Å DetailsAuthors Gutierrez-Fernandez, J. / Minhas, G.S. / Sazanov, L.A. Funding support United Kingdom, 1items Details Hide detailsOrganization Grant number Country Medical Research Council (MRC, United Kingdom) MC_U105674180 United Kingdom
CitationJournal : Nat Commun / Year : 2020Title : Key role of quinone in the mechanism of respiratory complex I.Authors : Javier Gutiérrez-Fernández / Karol Kaszuba / Gurdeep S Minhas / Rozbeh Baradaran / Margherita Tambalo / David T Gallagher / Leonid A Sazanov / Abstract : Complex I is the first and the largest enzyme of respiratory chains in bacteria and mitochondria. The mechanism which couples spatially separated transfer of electrons to proton translocation in ... Complex I is the first and the largest enzyme of respiratory chains in bacteria and mitochondria. The mechanism which couples spatially separated transfer of electrons to proton translocation in complex I is not known. Here we report five crystal structures of T. thermophilus enzyme in complex with NADH or quinone-like compounds. We also determined cryo-EM structures of major and minor native states of the complex, differing in the position of the peripheral arm. Crystal structures show that binding of quinone-like compounds (but not of NADH) leads to a related global conformational change, accompanied by local re-arrangements propagating from the quinone site to the nearest proton channel. Normal mode and molecular dynamics analyses indicate that these are likely to represent the first steps in the proton translocation mechanism. Our results suggest that quinone binding and chemistry play a key role in the coupling mechanism of complex I. History Deposition Feb 10, 2020 Deposition site : PDBE / Processing site : PDBERevision 1.0 Sep 2, 2020 Provider : repository / Type : Initial releaseRevision 1.1 Jan 24, 2024 Group : Data collection / Database references / Refinement descriptionCategory : chem_comp_atom / chem_comp_bond ... chem_comp_atom / chem_comp_bond / database_2 / pdbx_initial_refinement_model / struct_ncs_dom_lim Item : _database_2.pdbx_DOI / _database_2.pdbx_database_accession ... _database_2.pdbx_DOI / _database_2.pdbx_database_accession / _struct_ncs_dom_lim.beg_auth_comp_id / _struct_ncs_dom_lim.beg_label_asym_id / _struct_ncs_dom_lim.beg_label_comp_id / _struct_ncs_dom_lim.beg_label_seq_id / _struct_ncs_dom_lim.end_auth_comp_id / _struct_ncs_dom_lim.end_label_asym_id / _struct_ncs_dom_lim.end_label_comp_id / _struct_ncs_dom_lim.end_label_seq_id
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