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- PDB-8a1y: Sodium pumping NADH-quinone oxidoreductase with inhibitor HQNO -

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Basic information

Entry
Database: PDB / ID: 8a1y
TitleSodium pumping NADH-quinone oxidoreductase with inhibitor HQNO
Components(Na(+)-translocating NADH-quinone reductase subunit ...) x 6
KeywordsMEMBRANE PROTEIN / quinone / NADH / sodium pump / inhibitor
Function / homology
Function and homology information


NADH:ubiquinone reductase (Na+-transporting) / Gram-negative-bacterium-type cell wall / oxidoreductase activity, acting on NAD(P)H, quinone or similar compound as acceptor / sodium ion transport / respiratory electron transport chain / transmembrane transport / 2 iron, 2 sulfur cluster binding / FMN binding / flavin adenine dinucleotide binding / electron transfer activity ...NADH:ubiquinone reductase (Na+-transporting) / Gram-negative-bacterium-type cell wall / oxidoreductase activity, acting on NAD(P)H, quinone or similar compound as acceptor / sodium ion transport / respiratory electron transport chain / transmembrane transport / 2 iron, 2 sulfur cluster binding / FMN binding / flavin adenine dinucleotide binding / electron transfer activity / metal ion binding / plasma membrane
Similarity search - Function
Na(+)-translocating NADH-quinone reductase subunit B / Na(+)-translocating NADH-quinone reductase subunit E / Na(+)-translocating NADH-quinone reductase subunit D / Na(+)-translocating NADH-quinone reductase subunit A / Na(+)-translocating NADH-quinone reductase subunit A, C-terminal domain / Na(+)-translocating NADH-quinone reductase subunit A (NQRA) / NQRA C-terminal domain / Na(+)-translocating NADH-quinone reductase subunit C / NqrDE/RnfAE / Ion-translocating oxidoreductase NqrB/RnfD ...Na(+)-translocating NADH-quinone reductase subunit B / Na(+)-translocating NADH-quinone reductase subunit E / Na(+)-translocating NADH-quinone reductase subunit D / Na(+)-translocating NADH-quinone reductase subunit A / Na(+)-translocating NADH-quinone reductase subunit A, C-terminal domain / Na(+)-translocating NADH-quinone reductase subunit A (NQRA) / NQRA C-terminal domain / Na(+)-translocating NADH-quinone reductase subunit C / NqrDE/RnfAE / Ion-translocating oxidoreductase NqrB/RnfD / Na(+)-translocating NADH-quinone reductase subunit F / Rnf-Nqr subunit, membrane protein / NQR2, RnfD, RnfE family / FMN-binding / FMN-binding domain / FMN_bind / Flavoprotein pyridine nucleotide cytochrome reductase-like, FAD-binding domain / Oxidoreductase FAD-binding domain / 2Fe-2S iron-sulfur cluster binding domain / Beta-grasp domain superfamily / 2Fe-2S ferredoxin-type iron-sulfur binding domain profile. / 2Fe-2S ferredoxin-type iron-sulfur binding domain / 2Fe-2S ferredoxin-like superfamily / Oxidoreductase FAD/NAD(P)-binding / Oxidoreductase NAD-binding domain / FAD-binding domain, ferredoxin reductase-type / Ferredoxin-NADP reductase (FNR), nucleotide-binding domain / Ferredoxin reductase-type FAD binding domain profile. / Riboflavin synthase-like beta-barrel
Similarity search - Domain/homology
1,2-Distearoyl-sn-glycerophosphoethanolamine / FLAVIN-ADENINE DINUCLEOTIDE / FE2/S2 (INORGANIC) CLUSTER / FLAVIN MONONUCLEOTIDE / 2-HEPTYL-4-HYDROXY QUINOLINE N-OXIDE / RIBOFLAVIN / Na(+)-translocating NADH-quinone reductase subunit E / Na(+)-translocating NADH-quinone reductase subunit C / Na(+)-translocating NADH-quinone reductase subunit D / Na(+)-translocating NADH-quinone reductase subunit B ...1,2-Distearoyl-sn-glycerophosphoethanolamine / FLAVIN-ADENINE DINUCLEOTIDE / FE2/S2 (INORGANIC) CLUSTER / FLAVIN MONONUCLEOTIDE / 2-HEPTYL-4-HYDROXY QUINOLINE N-OXIDE / RIBOFLAVIN / Na(+)-translocating NADH-quinone reductase subunit E / Na(+)-translocating NADH-quinone reductase subunit C / Na(+)-translocating NADH-quinone reductase subunit D / Na(+)-translocating NADH-quinone reductase subunit B / Na(+)-translocating NADH-quinone reductase subunit F / Na(+)-translocating NADH-quinone reductase subunit A
Similarity search - Component
Biological speciesVibrio cholerae (bacteria)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.3 Å
AuthorsHau, J.-L. / Kaltwasser, S. / Vonck, J. / Fritz, G. / Steuber, J.
Funding support Germany, 1items
OrganizationGrant numberCountry
German Research Foundation (DFG)FR 1488/8-2 Germany
CitationJournal: Nat Struct Mol Biol / Year: 2023
Title: Conformational coupling of redox-driven Na-translocation in Vibrio cholerae NADH:quinone oxidoreductase.
Authors: Jann-Louis Hau / Susann Kaltwasser / Valentin Muras / Marco S Casutt / Georg Vohl / Björn Claußen / Wojtek Steffen / Alexander Leitner / Eckhard Bill / George E Cutsail / Serena DeBeer / ...Authors: Jann-Louis Hau / Susann Kaltwasser / Valentin Muras / Marco S Casutt / Georg Vohl / Björn Claußen / Wojtek Steffen / Alexander Leitner / Eckhard Bill / George E Cutsail / Serena DeBeer / Janet Vonck / Julia Steuber / Günter Fritz /
Abstract: In the respiratory chain, NADH oxidation is coupled to ion translocation across the membrane to build up an electrochemical gradient. In the human pathogen Vibrio cholerae, the sodium-pumping NADH: ...In the respiratory chain, NADH oxidation is coupled to ion translocation across the membrane to build up an electrochemical gradient. In the human pathogen Vibrio cholerae, the sodium-pumping NADH:quinone oxidoreductase (Na-NQR) generates a sodium gradient by a so far unknown mechanism. Here we show that ion pumping in Na-NQR is driven by large conformational changes coupling electron transfer to ion translocation. We have determined a series of cryo-EM and X-ray structures of the Na-NQR that represent snapshots of the catalytic cycle. The six subunits NqrA, B, C, D, E, and F of Na-NQR harbor a unique set of cofactors that shuttle the electrons from NADH twice across the membrane to quinone. The redox state of a unique intramembranous [2Fe-2S] cluster orchestrates the movements of subunit NqrC, which acts as an electron transfer switch. We propose that this switching movement controls the release of Na from a binding site localized in subunit NqrB.
History
DepositionJun 2, 2022Deposition site: PDBE / Processing site: PDBE
Revision 1.0Jun 14, 2023Provider: repository / Type: Initial release
Revision 1.1Sep 20, 2023Group: Data collection / Database references / Refinement description
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / citation / citation_author / em_3d_fitting_list
Item: _citation.country / _citation.journal_abbrev ..._citation.country / _citation.journal_abbrev / _citation.journal_id_CSD / _citation.journal_id_ISSN / _citation.pdbx_database_id_DOI / _citation.title / _citation.year / _em_3d_fitting_list.accession_code / _em_3d_fitting_list.initial_refinement_model_id / _em_3d_fitting_list.source_name / _em_3d_fitting_list.type
Revision 1.2Sep 27, 2023Group: Database references / Category: citation / citation_author
Item: _citation.pdbx_database_id_PubMed / _citation.title / _citation_author.name
Revision 1.3Nov 22, 2023Group: Database references / Category: citation / citation_author
Item: _citation.journal_volume / _citation.page_first ..._citation.journal_volume / _citation.page_first / _citation.page_last / _citation_author.identifier_ORCID

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: Na(+)-translocating NADH-quinone reductase subunit A
B: Na(+)-translocating NADH-quinone reductase subunit B
C: Na(+)-translocating NADH-quinone reductase subunit C
D: Na(+)-translocating NADH-quinone reductase subunit D
E: Na(+)-translocating NADH-quinone reductase subunit E
F: Na(+)-translocating NADH-quinone reductase subunit F
hetero molecules


Theoretical massNumber of molelcules
Total (without water)220,58920
Polymers213,6176
Non-polymers6,97214
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: electron microscopy
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

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Na(+)-translocating NADH-quinone reductase subunit ... , 6 types, 6 molecules ABCDEF

#1: Protein Na(+)-translocating NADH-quinone reductase subunit A / Na(+)-NQR subunit A / Na(+)-translocating NQR subunit A / NQR complex subunit A / NQR-1 subunit A


Mass: 51125.391 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Details: NqrA with N-terminal his-tag and HRV3C protease cleavage site
Source: (gene. exp.) Vibrio cholerae (bacteria)
Gene: nqrA, ERS013165_00619, ERS013186_02081, ERS013199_02394, ERS013202_01882, ERS013206_02986, ERS013207_01957
Production host: Vibrio cholerae (bacteria)
References: UniProt: A0A655PZA5, NADH:ubiquinone reductase (Na+-transporting)
#2: Protein Na(+)-translocating NADH-quinone reductase subunit B / Na(+)-NQR subunit B / Na(+)-translocating NQR subunit B / NQR complex subunit B / NQR-1 subunit B


Mass: 45390.883 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Vibrio cholerae (bacteria)
Gene: nqrB, D6U24_04465, ERS013186_02082, ERS013198_02508, ERS013199_02395, ERS013200_04117, ERS013202_01883, ERS013206_02987, ERS013207_01958, EYB64_17950, F0H40_10090, FLM02_04820, FLM12_12920, FXE67_12105, HPY07_02915
Production host: Vibrio cholerae (bacteria)
References: UniProt: A0A085SSI3, NADH:ubiquinone reductase (Na+-transporting)
#3: Protein Na(+)-translocating NADH-quinone reductase subunit C / Na(+)-NQR subunit C / Na(+)-translocating NQR subunit C / NQR complex subunit C / NQR-1 subunit C


Mass: 27652.270 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Vibrio cholerae (bacteria)
Gene: nqrC, BC353_01370, D6U24_04470, ERS013165_00616, ERS013186_02083, ERS013198_02507, ERS013199_02396, ERS013200_04118, ERS013201_01110, ERS013202_01884, ERS013206_02988, ERS013207_01959, F0H40_ ...Gene: nqrC, BC353_01370, D6U24_04470, ERS013165_00616, ERS013186_02083, ERS013198_02507, ERS013199_02396, ERS013200_04118, ERS013201_01110, ERS013202_01884, ERS013206_02988, ERS013207_01959, F0H40_10095, FLM02_04815, FLM12_12915
Production host: Vibrio cholerae (bacteria)
References: UniProt: A0A085R7S2, NADH:ubiquinone reductase (Na+-transporting)
#4: Protein Na(+)-translocating NADH-quinone reductase subunit D / Na(+)-NQR subunit D / Na(+)-translocating NQR subunit D / NQR complex subunit D / NQR-1 subunit D