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- PDB-9he1: Structure of the Xenorceptide A2-bound E. coli BAM complex (BamABCDE) -

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Basic information

Entry
Database: PDB / ID: 9he1
TitleStructure of the Xenorceptide A2-bound E. coli BAM complex (BamABCDE)
Components
  • (Outer membrane protein assembly factor ...) x 5
  • RSAM-modified RiPP, XyeA family
KeywordsMEMBRANE PROTEIN / Beta-Barrel / outer membrane / protein insertion / protein folding / protein maturation / antibiotic / natural product / cyclized peptide
Function / homology
Function and homology information


Bam protein complex / Gram-negative-bacterium-type cell outer membrane assembly / protein insertion into membrane / cell outer membrane / protein-macromolecule adaptor activity / cell adhesion / response to antibiotic / cell surface / identical protein binding / membrane
Similarity search - Function
Putative rSAM-modified RiPP, XyeA family / Outer membrane protein assembly factor BamB / NlpB/DapX lipoprotein / Outer membrane protein assembly factor BamC / Outer membrane protein assembly factor BamC, C-terminal / NlpB/DapX lipoprotein / Outer membrane protein assembly factor BamD / Outer membrane protein assembly factor BamE / Lipoprotein SmpA/OmlA / Outer membrane lipoprotein BamD-like ...Putative rSAM-modified RiPP, XyeA family / Outer membrane protein assembly factor BamB / NlpB/DapX lipoprotein / Outer membrane protein assembly factor BamC / Outer membrane protein assembly factor BamC, C-terminal / NlpB/DapX lipoprotein / Outer membrane protein assembly factor BamD / Outer membrane protein assembly factor BamE / Lipoprotein SmpA/OmlA / Outer membrane lipoprotein BamD-like / Outer membrane protein assembly factor BamE domain / Outer membrane lipoprotein / BamE-like / Outer membrane protein assembly factor BamA / Pyrrolo-quinoline quinone repeat / POTRA domain, BamA/TamA-like / Surface antigen variable number repeat / Outer membrane protein assembly factor BamB / Surface antigen D15-like / POTRA domain / POTRA domain profile. / Pyrrolo-quinoline quinone beta-propeller repeat / beta-propeller repeat / Bacterial surface antigen (D15) / Omp85 superfamily domain / Quinoprotein alcohol dehydrogenase-like superfamily / Prokaryotic membrane lipoprotein lipid attachment site profile. / Tetratricopeptide-like helical domain superfamily / WD40/YVTN repeat-like-containing domain superfamily
Similarity search - Domain/homology
RSAM-modified RiPP, XyeA family / Outer membrane protein assembly factor BamC / Outer membrane protein assembly factor BamE / Outer membrane protein assembly factor BamA / Outer membrane protein assembly factor BamD / Outer membrane protein assembly factor BamB
Similarity search - Component
Biological speciesEscherichia coli K-12 (bacteria)
synthetic construct (others)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3 Å
AuthorsJakob, R.P. / Modaresi, S.M. / Maier, T. / Hiller, S.
Funding support1items
OrganizationGrant numberCountry
Not funded
CitationJournal: Biorxiv / Year: 2024
Title: Antibiotics that Kill Gram-negative Bacteria by Restructuring the Outer Membrane Protein BamA
Authors: Modaresi, S.M. / Sugiyama, R. / Tram, N.D.T. / Jakob, R.P. / Phan, C.S. / Saei, A.A. / Morishita, Y. / Muhlethaler, T. / Lim, J. / Ritz, D. / Long, P.S.Y. / Lehner, P.A. / Lim, Z.H. / Degen, ...Authors: Modaresi, S.M. / Sugiyama, R. / Tram, N.D.T. / Jakob, R.P. / Phan, C.S. / Saei, A.A. / Morishita, Y. / Muhlethaler, T. / Lim, J. / Ritz, D. / Long, P.S.Y. / Lehner, P.A. / Lim, Z.H. / Degen, M. / Yao, Z. / Maier, T. / Hou, Y. / Lee, J.Y. / Xu, J. / Yeat, A.Y.J. / Koh, K.T.S. / Goh, W.Y. / Ling, S.Y.H. / Chua, P.W.L. / Yamazaki, M. / Ee, P.L.R. / Hiller, S. / Morinaka, B.I.
History
DepositionNov 13, 2024Deposition site: PDBE / Processing site: PDBE
Revision 1.0Feb 26, 2025Provider: repository / Type: Initial release

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Outer membrane protein assembly factor BamA
B: Outer membrane protein assembly factor BamB
C: Outer membrane protein assembly factor BamC
D: Outer membrane protein assembly factor BamD
E: Outer membrane protein assembly factor BamE
G: RSAM-modified RiPP, XyeA family


Theoretical massNumber of molelcules
Total (without water)213,2216
Polymers213,2216
Non-polymers00
Water00
1


  • Idetical with deposited unit
  • defined by author&software
  • Evidence: gel filtration, monomer
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1

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Components

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Outer membrane protein assembly factor ... , 5 types, 5 molecules ABCDE

#1: Protein Outer membrane protein assembly factor BamA / Omp85


Mass: 90643.383 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Escherichia coli K-12 (bacteria) / Gene: bamA, yaeT, yzzN, yzzY, b0177, JW0172 / Production host: Escherichia coli BL21(DE3) (bacteria) / References: UniProt: P0A940
#2: Protein Outer membrane protein assembly factor BamB


Mass: 42961.086 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Escherichia coli K-12 (bacteria) / Gene: bamB, yfgL, b2512, JW2496 / Production host: Escherichia coli BL21(DE3) (bacteria) / References: UniProt: P77774
#3: Protein Outer membrane protein assembly factor BamC


Mass: 36875.277 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Escherichia coli K-12 (bacteria) / Gene: bamC, dapX, nlpB, b2477, JW2462 / Production host: Escherichia coli BL21(DE3) (bacteria) / References: UniProt: P0A903
#4: Protein Outer membrane protein assembly factor BamD


Mass: 27858.350 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Escherichia coli K-12 (bacteria) / Gene: bamD, yfiO, b2595, JW2577 / Production host: Escherichia coli BL21(DE3) (bacteria) / References: UniProt: P0AC02
#5: Protein Outer membrane protein assembly factor BamE


Mass: 13382.195 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Escherichia coli K-12 (bacteria) / Gene: bamE, smpA, b2617, JW2598 / Production host: Escherichia coli BL21(DE3) (bacteria) / References: UniProt: P0A937

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Protein/peptide , 1 types, 1 molecules G

#6: Protein/peptide RSAM-modified RiPP, XyeA family


Mass: 1500.701 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) synthetic construct (others) / References: UniProt: A0A1Q4P361

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Details

Has ligand of interestY
Has protein modificationY

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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: BAM complex / Type: COMPLEX / Details: five subunits: BamA, BamB, BamC, BamD, BamE / Entity ID: all / Source: RECOMBINANT
Molecular weightExperimental value: NO
Source (natural)Organism: Escherichia coli K-12 (bacteria)
Source (recombinant)Organism: Escherichia coli BL21(DE3) (bacteria)
Buffer solutionpH: 7 / Details: 25 mM NaPi, 100 mM NaCl, pH 7.0
SpecimenConc.: 0.8 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES / Details: MSP1D1 nanodiscs with DMPC 14:0 lipids
Specimen supportGrid material: GOLD / Grid mesh size: 200 divisions/in. / Grid type: Quantifoil Active R2/1
VitrificationInstrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 95 % / Chamber temperature: 289 K
Details: 3.5uL sample, blot time 3sec, Blotforce 1, Blot total 1,

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: TFS KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal magnification: 165000 X / Nominal defocus max: 2000 nm / Nominal defocus min: 600 nm / Cs: 2.7 mm / Alignment procedure: COMA FREE
Specimen holderCryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER
Image recordingElectron dose: 40 e/Å2 / Film or detector model: FEI FALCON IV (4k x 4k)
EM imaging opticsEnergyfilter name: GIF Bioquantum / Energyfilter slit width: 10 eV
Image scansWidth: 4096 / Height: 4096

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Processing

EM software
IDNameCategory
7UCSF ChimeraXmodel fitting
9PHENIXmodel refinement
10cryoSPARCinitial Euler assignment
11cryoSPARCfinal Euler assignment
12cryoSPARCclassification
13cryoSPARC3D reconstruction
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 3 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 93541 / Symmetry type: POINT
Atomic model buildingProtocol: AB INITIO MODEL
RefinementHighest resolution: 3 Å
Stereochemistry target values: REAL-SPACE (WEIGHTED MAP SUM AT ATOM CENTERS)
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.00212097
ELECTRON MICROSCOPYf_angle_d0.40116440
ELECTRON MICROSCOPYf_dihedral_angle_d8.8224377
ELECTRON MICROSCOPYf_chiral_restr0.0411787
ELECTRON MICROSCOPYf_plane_restr0.0032164

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