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- PDB-9fdq: Single particle cryo-EM structure of the AcrB V612F monomer in th... -

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Basic information

Entry
Database: PDB / ID: 9fdq
TitleSingle particle cryo-EM structure of the AcrB V612F monomer in the O state
ComponentsMultidrug efflux pump subunit AcrB
KeywordsTRANSPORT PROTEIN / Drug efflux / RND transporter
Function / homology
Function and homology information


alkane transmembrane transporter activity / alkane transport / enterobactin transport / enterobactin transmembrane transporter activity / xenobiotic detoxification by transmembrane export across the cell outer membrane / periplasmic side of plasma membrane / efflux pump complex / bile acid transmembrane transporter activity / xenobiotic transport / bile acid and bile salt transport ...alkane transmembrane transporter activity / alkane transport / enterobactin transport / enterobactin transmembrane transporter activity / xenobiotic detoxification by transmembrane export across the cell outer membrane / periplasmic side of plasma membrane / efflux pump complex / bile acid transmembrane transporter activity / xenobiotic transport / bile acid and bile salt transport / efflux transmembrane transporter activity / xenobiotic transmembrane transporter activity / fatty acid transport / response to toxic substance / response to xenobiotic stimulus / response to antibiotic / identical protein binding / membrane / plasma membrane
Similarity search - Function
Hydrophobe/amphiphile efflux-1 HAE1 / Multidrug efflux transporter AcrB TolC docking domain, DN/DC subdomains / Acriflavin resistance protein / AcrB/AcrD/AcrF family
Similarity search - Domain/homology
Multidrug efflux pump subunit AcrB
Similarity search - Component
Biological speciesEscherichia coli K-12 (bacteria)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.47 Å
AuthorsLazarova, M. / Frangakis, A. / Pos, K.M.
Funding support Switzerland, Germany, 4items
OrganizationGrant numberCountry
Swiss National Science Foundation3100A0_118402 Switzerland
German Research Foundation (DFG)SFB807-P18 Germany
German Research Foundation (DFG)SFB1507-P3 Germany
German Research Foundation (DFG)DFG-EXC115 Germany
CitationJournal: To Be Published
Title: Single particle cryo-EM structure of the AcrB V612F monomer in the O state
Authors: Lazarova, M. / Frangakis, A. / Pos, K.M.
History
DepositionMay 17, 2024Deposition site: PDBE / Processing site: PDBE
Revision 1.0May 28, 2025Provider: repository / Type: Initial release
Revision 1.0May 28, 2025Data content type: EM metadata / Data content type: EM metadata / Provider: repository / Type: Initial release
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Revision 1.0May 28, 2025Data content type: FSC / Part number: 1 / Data content type: FSC / Provider: repository / Type: Initial release
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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
C: Multidrug efflux pump subunit AcrB


Theoretical massNumber of molelcules
Total (without water)114,7841
Polymers114,7841
Non-polymers00
Water00
1


  • Idetical with deposited unit
  • defined by author&software
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1

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Components

#1: Protein Multidrug efflux pump subunit AcrB / AcrAB-TolC multidrug efflux pump subunit AcrB / Acridine resistance protein B


Mass: 114784.336 Da / Num. of mol.: 1 / Mutation: V612F
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Escherichia coli K-12 (bacteria) / Gene: acrB, acrE, b0462, JW0451 / Production host: Escherichia coli (E. coli) / References: UniProt: P31224
Has protein modificationN

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

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Sample preparation

ComponentName: Multidrug efflux pump subunit AcrB / Type: COMPLEX / Entity ID: all / Source: RECOMBINANT
Molecular weightValue: 0.114 MDa / Experimental value: NO
Source (natural)Organism: Escherichia coli K-12 (bacteria)
Source (recombinant)Organism: Escherichia coli (E. coli)
Buffer solutionpH: 7.5
SpecimenConc.: 2.8 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Specimen supportGrid material: COPPER / Grid type: Quantifoil R1.2/1.3
VitrificationInstrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 277 K

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: FEI TITAN KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal magnification: 130000 X / Nominal defocus max: 3000 nm / Nominal defocus min: 500 nm / Cs: 2.7 mm / C2 aperture diameter: 70 µm
Specimen holderCryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER
Image recordingElectron dose: 50 e/Å2 / Detector mode: COUNTING / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Num. of grids imaged: 1 / Num. of real images: 2708
EM imaging opticsEnergyfilter name: GIF Bioquantum / Energyfilter slit width: 20 eV

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Processing

CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
Particle selectionNum. of particles selected: 732894
3D reconstructionResolution: 3.47 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 120564 / Symmetry type: POINT
Atomic model buildingSpace: REAL
Atomic model buildingPDB-ID: 4dx5

4dx5


Pdb chain-ID: C / Accession code: 4dx5 / Source name: PDB / Type: experimental model
RefinementCross valid method: NONE
Stereochemistry target values: GeoStd + Monomer Library + CDL v1.2
Displacement parametersBiso mean: 38.75 Å2
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.00218004
ELECTRON MICROSCOPYf_angle_d0.516410869
ELECTRON MICROSCOPYf_chiral_restr0.03841278
ELECTRON MICROSCOPYf_plane_restr0.00321391
ELECTRON MICROSCOPYf_dihedral_angle_d3.41071096

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