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- PDB-8acy: X-ray structure of Na+-NQR from Vibrio cholerae at 3.5 A resolution -

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Entry
Database: PDB / ID: 8acy
TitleX-ray structure of Na+-NQR from Vibrio cholerae at 3.5 A resolution
Components(Na(+)-translocating NADH-quinone reductase subunit ...) x 6
KeywordsMEMBRANE PROTEIN / respiratory complex / NADH ubiquinone oxido reducatase / Na+ pump
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
FLAVIN-ADENINE DINUCLEOTIDE / FE2/S2 (INORGANIC) CLUSTER / FLAVIN MONONUCLEOTIDE / 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)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 3.5 Å
AuthorsFritz, G.
Funding support Germany, 1items
OrganizationGrant numberCountry
German Research Foundation (DFG)311211092 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
DepositionJul 7, 2022Deposition site: PDBE / Processing site: PDBE
SupersessionJul 12, 2023ID: 4P6V
Revision 1.0Jul 12, 2023Provider: repository / Type: Initial release
Revision 1.1Sep 20, 2023Group: Data collection / Database references
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / citation / citation_author
Item: _citation.pdbx_database_id_DOI / _citation.title
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
Revision 1.4Feb 7, 2024Group: Refinement description / Category: pdbx_initial_refinement_model

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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)217,59816
Polymers213,6176
Non-polymers3,98110
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: electron microscopy
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Unit cell
Length a, b, c (Å)95.270, 143.320, 104.370
Angle α, β, γ (deg.)90.000, 110.980, 90.000
Int Tables number4
Space group name H-MP1211

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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 / Mutation: N-terminal His-tag
Source method: isolated from a genetically manipulated source
Details: N-terminal His-tag: MGSSHHHHHHSSGLEVLFQGPH / 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


Mass: 22853.217 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Vibrio cholerae (bacteria)
Gene: nqrD, BC353_01365, D6U24_04475, ERS013165_00615, ERS013186_02084, ERS013198_02506, ERS013199_02397, ERS013200_04119, ERS013201_01111, ERS013202_01885, ERS013206_02989, ERS013207_01960, EYB64_ ...Gene: nqrD, BC353_01365, D6U24_04475, ERS013165_00615, ERS013186_02084, ERS013198_02506, ERS013199_02397, ERS013200_04119, ERS013201_01111, ERS013202_01885, ERS013206_02989, ERS013207_01960, EYB64_17940, F0315_08345, F0H40_10100, F0M16_14020, FLM02_04810, FLM12_12910, HPY07_02925
Production host: Vibrio cholerae (bacteria)
References: UniProt: A0A085RHY8, NADH:ubiquinone reductase (Na+-transporting)
#5: Protein Na(+)-translocating NADH-quinone reductase subunit E / Na(+)-NQR subunit E / Na(+)-translocating NQR subunit E / NQR complex subunit E / NQR-1 subunit E


Mass: 21481.678 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Vibrio cholerae (bacteria)
Gene: nqrE, BC353_01360, D6U24_04480, ERS013165_00614, ERS013186_02085, ERS013198_02505, ERS013199_02398, ERS013200_04120, ERS013201_01112, ERS013202_01886, ERS013206_02990, ERS013207_01961, EYB64_ ...Gene: nqrE, BC353_01360, D6U24_04480, ERS013165_00614, ERS013186_02085, ERS013198_02505, ERS013199_02398, ERS013200_04120, ERS013201_01112, ERS013202_01886, ERS013206_02990, ERS013207_01961, EYB64_17935, F0315_08350, F0H40_10105, F0M16_14025, FLM02_04805, FLM12_12905, HPY07_02930
Production host: Vibrio cholerae (bacteria)
References: UniProt: A0A085QWM0, NADH:ubiquinone reductase (Na+-transporting)
#6: Protein Na(+)-translocating NADH-quinone reductase subunit F / Na(+)-NQR subunit F / Na(+)-translocating NQR subunit F / NQR complex subunit F / NQR-1 subunit F


Mass: 45113.492 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Vibrio cholerae (bacteria)
Gene: nqrF, D6U24_04485, ERS013198_02504, ERS013199_02399, ERS013201_01113, ERS013202_01887, ERS013206_02991, EYB64_17930, FLM12_12900
Production host: Vibrio cholerae (bacteria)
References: UniProt: A0A085ST13, NADH:ubiquinone reductase (Na+-transporting)

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Sugars , 1 types, 3 molecules

#9: Sugar ChemComp-LMT / DODECYL-BETA-D-MALTOSIDE


Type: D-saccharide / Mass: 510.615 Da / Num. of mol.: 3 / Source method: obtained synthetically / Formula: C24H46O11 / Comment: detergent*YM

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Non-polymers , 5 types, 7 molecules

#7: Chemical ChemComp-FMN / FLAVIN MONONUCLEOTIDE / RIBOFLAVIN MONOPHOSPHATE


Mass: 456.344 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C17H21N4O9P
#8: Chemical ChemComp-RBF / RIBOFLAVIN / RIBOFLAVINE / VITAMIN B2


Mass: 376.364 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C17H20N4O6
#10: Chemical ChemComp-NA / SODIUM ION


Mass: 22.990 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Na
#11: Chemical ChemComp-FES / FE2/S2 (INORGANIC) CLUSTER


Mass: 175.820 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: Fe2S2
#12: Chemical ChemComp-FAD / FLAVIN-ADENINE DINUCLEOTIDE


Mass: 785.550 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C27H33N9O15P2 / Comment: FAD*YM

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Details

Has ligand of interestN

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Experimental details

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Experiment

ExperimentMethod: X-RAY DIFFRACTION / Number of used crystals: 1

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Sample preparation

CrystalDensity Matthews: 3.11 Å3/Da / Density % sol: 60.51 %
Crystal growTemperature: 277 K / Method: vapor diffusion, sitting drop / pH: 8.5
Details: 40 mM KSCN, 21.0% PEG 2000MME, 100 mM Tris-acetic acid, 8% 1-propanol

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Data collection

DiffractionMean temperature: 100 K / Serial crystal experiment: N
Diffraction sourceSource: SYNCHROTRON / Site: SLS / Beamline: X06SA / Wavelength: 1 Å
DetectorType: DECTRIS PILATUS 6M / Detector: PIXEL / Date: Nov 27, 2010
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1 Å / Relative weight: 1
ReflectionResolution: 3.5→48.73 Å / Num. obs: 32938 / % possible obs: 99.3 % / Redundancy: 6.844 % / Biso Wilson estimate: 165.33 Å2 / CC1/2: 1 / Rmerge(I) obs: 0.075 / Rrim(I) all: 0.082 / Χ2: 0.832 / Net I/σ(I): 12.6 / Num. measured all: 225415 / Scaling rejects: 53
Reflection shell

Diffraction-ID: 1

Resolution (Å)Redundancy (%)Rmerge(I) obsMean I/σ(I) obsNum. measured obsNum. possibleNum. unique obsCC1/2Rrim(I) all% possible all
3.5-3.77.0222.9070.834764504949510.3733.13698.1
3.7-46.8071.1631.9839553583558110.7281.25999.6
4-66.9270.2039.8310766515585155430.9880.2299.7
6-86.7250.05127.1725792385138350.9990.05699.6
8-106.2990.03245.848504135113500.9990.03599.9
10-48.736.310.02555.769137148414480.9990.02797.6

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Processing

Software
NameVersionClassification
XDSdata reduction
XSCALEdata scaling
PHENIX1.20.1-4487refinement
PDB_EXTRACT3.27data extraction
PHASERphasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: 4P6V

4p6v
PDB Unreleased entry


Resolution: 3.5→48.73 Å / SU ML: 0.68 / Cross valid method: THROUGHOUT / σ(F): 1.34 / Phase error: 36.3 / Stereochemistry target values: ML
RfactorNum. reflection% reflection
Rfree0.2899 1647 5 %
Rwork0.2663 31281 -
obs0.2675 32928 99.54 %
Solvent computationShrinkage radii: 0.9 Å / VDW probe radii: 1.1 Å / Solvent model: FLAT BULK SOLVENT MODEL
Displacement parametersBiso max: 388.8 Å2 / Biso mean: 193.1007 Å2 / Biso min: 105.68 Å2
Refinement stepCycle: final / Resolution: 3.5→48.73 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms14090 0 480 0 14570
Biso mean--197.47 --
Num. residues----1839
LS refinement shell

Refine-ID: X-RAY DIFFRACTION / Rfactor Rfree error: 0 / Total num. of bins used: 12

Resolution (Å)Rfactor RfreeNum. reflection RfreeRfactor RworkNum. reflection RworkNum. reflection all% reflection obs (%)
3.5-3.60.45361320.42572520265297
3.6-3.720.41191370.374625972734100
3.72-3.850.37811370.329926102747100
3.85-4.010.31491380.30326092747100
4.01-4.190.35681370.289226002737100
4.19-4.410.29271360.254425962732100
4.41-4.690.2791380.233426182756100
4.69-5.050.2391380.227726182756100
5.05-5.550.29791370.249425992736100
5.55-6.360.3311380.271526292767100
6.36-80.28861390.256726352774100
8-48.730.25891400.26162650279099

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