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- PDB-5en5: Apo structure of bacterial efflux pump. -

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Basic information

Entry
Database: PDB / ID: 5en5
TitleApo structure of bacterial efflux pump.
Components
  • DARPin
  • Multidrug efflux pump subunit AcrB,Multidrug efflux pump subunit AcrB
KeywordsTRANSPORT PROTEIN / Efflux pump
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
Multidrug efflux transporter AcrB pore domain / Multidrug efflux transporter AcrB pore domain like / Multidrug efflux transporter AcrB pore domain / Hydrophobe/amphiphile efflux-1 HAE1 / Multidrug efflux transporter AcrB TolC docking domain, DN/DC subdomains / Acriflavin resistance protein / AcrB/AcrD/AcrF family / Ankyrin repeat-containing domain / Serine Threonine Protein Phosphatase 5, Tetratricopeptide repeat / Alpha Horseshoe ...Multidrug efflux transporter AcrB pore domain / Multidrug efflux transporter AcrB pore domain like / Multidrug efflux transporter AcrB pore domain / Hydrophobe/amphiphile efflux-1 HAE1 / Multidrug efflux transporter AcrB TolC docking domain, DN/DC subdomains / Acriflavin resistance protein / AcrB/AcrD/AcrF family / Ankyrin repeat-containing domain / Serine Threonine Protein Phosphatase 5, Tetratricopeptide repeat / Alpha Horseshoe / Alpha-Beta Plaits / 2-Layer Sandwich / Mainly Alpha / Alpha Beta
Similarity search - Domain/homology
Multidrug efflux pump subunit AcrB
Similarity search - Component
Biological speciesEscherichia coli (E. coli)
Ribosome display vector pRDV (others)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 2.3 Å
AuthorsSjuts, H. / Ornik, A.R. / Pos, K.M.
CitationJournal: Proc.Natl.Acad.Sci.USA / Year: 2016
Title: Molecular basis for inhibition of AcrB multidrug efflux pump by novel and powerful pyranopyridine derivatives.
Authors: Sjuts, H. / Vargiu, A.V. / Kwasny, S.M. / Nguyen, S.T. / Kim, H.S. / Ding, X. / Ornik, A.R. / Ruggerone, P. / Bowlin, T.L. / Nikaido, H. / Pos, K.M. / Opperman, T.J.
History
DepositionNov 9, 2015Deposition site: RCSB / Processing site: PDBE
Revision 1.0Apr 6, 2016Provider: repository / Type: Initial release
Revision 1.1Jan 10, 2024Group: Data collection / Database references / Refinement description
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / pdbx_initial_refinement_model
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Multidrug efflux pump subunit AcrB,Multidrug efflux pump subunit AcrB
B: Multidrug efflux pump subunit AcrB,Multidrug efflux pump subunit AcrB
C: Multidrug efflux pump subunit AcrB,Multidrug efflux pump subunit AcrB
D: DARPin
E: DARPin
F: DARPin


Theoretical massNumber of molelcules
Total (without water)252,1756
Polymers252,1756
Non-polymers00
Water10,683593
1


  • Idetical with deposited unit
  • defined by software
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area23030 Å2
ΔGint-66 kcal/mol
Surface area85770 Å2
MethodPISA
Unit cell
Length a, b, c (Å)108.341, 145.286, 174.544
Angle α, β, γ (deg.)90.00, 90.00, 90.00
Int Tables number19
Space group name H-MP212121

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Components

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


Mass: 65740.656 Da / Num. of mol.: 3
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Escherichia coli (strain K12) (bacteria)
Strain: K12 / Gene: acrB, acrE, b0462, JW0451 / Production host: Escherichia coli (E. coli) / References: UniProt: P31224
#2: Protein DARPin


Mass: 18317.566 Da / Num. of mol.: 3
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Ribosome display vector pRDV (others) / Production host: Escherichia coli (E. coli)
#3: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 593 / Source method: isolated from a natural source / Formula: H2O

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Experimental details

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Experiment

ExperimentMethod: X-RAY DIFFRACTION

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Sample preparation

CrystalDensity Matthews: 2.72 Å3/Da / Density % sol: 54.84 %
Crystal growTemperature: 291 K / Method: vapor diffusion, hanging drop / Details: 0.1 M MES pH6.5, 0.21 M NaCl, 11.5 % PEG 4000

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: SYNCHROTRON / Site: SLS / Beamline: X06DA / Wavelength: 1 Å
DetectorType: DECTRIS PILATUS 2M / Detector: PIXEL / Date: Mar 13, 2015
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1 Å / Relative weight: 1
ReflectionResolution: 2.3→50 Å / Num. obs: 122373 / % possible obs: 99.3 % / Redundancy: 6.9 % / CC1/2: 0.987 / Rmerge(I) obs: 0.191 / Net I/σ(I): 6.75
Reflection shellResolution: 2.3→2.44 Å / Redundancy: 6.8 % / Rmerge(I) obs: 1.212 / CC1/2: 0.462

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Processing

Software
NameVersionClassification
REFMAC5.8.0131refinement
XDSdata reduction
XDSdata scaling
PHASERphasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: 4DX5

4dx5


Resolution: 2.3→50 Å / Cor.coef. Fo:Fc: 0.943 / Cor.coef. Fo:Fc free: 0.916 / SU B: 8.048 / SU ML: 0.185 / Cross valid method: THROUGHOUT / ESU R: 0.283 / ESU R Free: 0.226 / Stereochemistry target values: MAXIMUM LIKELIHOOD / Details: HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS
RfactorNum. reflection% reflectionSelection details
Rfree0.24859 5990 4.9 %RANDOM
Rwork0.19662 ---
obs0.19915 116366 99.73 %-
Solvent computationIon probe radii: 0.8 Å / Shrinkage radii: 0.8 Å / VDW probe radii: 1.2 Å / Solvent model: MASK
Displacement parametersBiso mean: 36.278 Å2
Baniso -1Baniso -2Baniso -3
1-1.36 Å2-0 Å20 Å2
2---0.75 Å2-0 Å2
3----0.61 Å2
Refinement stepCycle: LAST / Resolution: 2.3→50 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms16904 0 0 593 17497
Refine LS restraints
Refine-IDTypeDev idealDev ideal targetNumber
X-RAY DIFFRACTIONr_bond_refined_d0.0150.01917198
X-RAY DIFFRACTIONr_bond_other_d0.0020.0216384
X-RAY DIFFRACTIONr_angle_refined_deg1.6731.95223319
X-RAY DIFFRACTIONr_angle_other_deg0.996337644
X-RAY DIFFRACTIONr_dihedral_angle_1_deg6.50152209
X-RAY DIFFRACTIONr_dihedral_angle_2_deg38.54925.635788
X-RAY DIFFRACTIONr_dihedral_angle_3_deg14.782152874
X-RAY DIFFRACTIONr_dihedral_angle_4_deg18.4921572
X-RAY DIFFRACTIONr_chiral_restr0.0930.22643
X-RAY DIFFRACTIONr_gen_planes_refined0.0070.0219940
X-RAY DIFFRACTIONr_gen_planes_other0.0020.023830
X-RAY DIFFRACTIONr_nbd_refined
X-RAY DIFFRACTIONr_nbd_other
X-RAY DIFFRACTIONr_nbtor_refined
X-RAY DIFFRACTIONr_nbtor_other
X-RAY DIFFRACTIONr_xyhbond_nbd_refined
X-RAY DIFFRACTIONr_xyhbond_nbd_other
X-RAY DIFFRACTIONr_metal_ion_refined
X-RAY DIFFRACTIONr_metal_ion_other
X-RAY DIFFRACTIONr_symmetry_vdw_refined
X-RAY DIFFRACTIONr_symmetry_vdw_other
X-RAY DIFFRACTIONr_symmetry_hbond_refined
X-RAY DIFFRACTIONr_symmetry_hbond_other
X-RAY DIFFRACTIONr_symmetry_metal_ion_refined
X-RAY DIFFRACTIONr_symmetry_metal_ion_other
X-RAY DIFFRACTIONr_mcbond_it2.9223.4488872
X-RAY DIFFRACTIONr_mcbond_other2.9153.4488871
X-RAY DIFFRACTIONr_mcangle_it4.5275.15511069
X-RAY DIFFRACTIONr_mcangle_other4.5285.15511070
X-RAY DIFFRACTIONr_scbond_it3.4243.8198326
X-RAY DIFFRACTIONr_scbond_other3.4243.8198327
X-RAY DIFFRACTIONr_scangle_it
X-RAY DIFFRACTIONr_scangle_other5.5215.55912251
X-RAY DIFFRACTIONr_long_range_B_refined7.39526.80918771
X-RAY DIFFRACTIONr_long_range_B_other7.40526.83818545
X-RAY DIFFRACTIONr_rigid_bond_restr
X-RAY DIFFRACTIONr_sphericity_free
X-RAY DIFFRACTIONr_sphericity_bonded
LS refinement shellResolution: 2.3→2.36 Å / Total num. of bins used: 20
RfactorNum. reflection% reflection
Rfree0.333 431 -
Rwork0.291 8434 -
obs--98.52 %

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