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- EMDB-12183: Salmonella LP ring 26 mer refined in C26 map -

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Basic information

Entry
Database: EMDB / ID: EMD-12183
TitleSalmonella LP ring 26 mer refined in C26 map
Map datarefinement map
Sample
  • Complex: Flagellar LP ring
    • Protein or peptide: Flagellar L-ring protein
    • Protein or peptide: Flagellar P-ring protein
    • Protein or peptide: YecR
  • Ligand: (2~{R},4~{R},5~{R},6~{R})-6-[(1~{R})-1,2-bis(oxidanyl)ethyl]-4,5-bis(oxidanyl)oxane-2-carboxylic acid
  • Ligand: [(3~{R})-1-[[(2~{R},3~{R},4~{R},5~{S},6~{R})-6-[[(2~{R},3~{R},4~{R},5~{S},6~{R})-3-[[(3~{R})-3-dodecanoyloxytetradecanoyl]amino]-6-(hydroxymethyl)-5-phosphonooxy-4-[(3~{R})-3-tetradecanoyloxytetradecanoyl]oxy-oxan-2-yl]oxymethyl]-5-oxidanyl-4-[(3~{R})-3-oxidanyltetradecanoyl]oxy-2-phosphonooxy-oxan-3-yl]amino]-1-oxidanylidene-tetradecan-3-yl] hexadecanoate
Function / homology
Function and homology information


bacterial-type flagellum basal body, distal rod, L ring / bacterial-type flagellum basal body, distal rod, P ring / cytoskeletal motor activity / bacterial-type flagellum-dependent cell motility / cell outer membrane / outer membrane-bounded periplasmic space / structural molecule activity
Similarity search - Function
YecR-like lipoprotein / YecR-like lipoprotein / Flagellar L-ring protein / Flagellar L-ring protein / Flagellar P-ring protein / Flagellar P-ring protein / Prokaryotic membrane lipoprotein lipid attachment site profile.
Similarity search - Domain/homology
Uncharacterized protein / Flagellar L-ring protein / Flagellar P-ring protein
Similarity search - Component
Biological speciesSalmonella enterica subsp. enterica serovar Typhi (bacteria) / Salmonella typhimurium (strain LT2 / SGSC1412 / ATCC 700720) (bacteria)
Methodsingle particle reconstruction / cryo EM / Resolution: 2.2 Å
AuthorsJohnson S / Furlong E / Lea SM
Funding support United Kingdom, 4 items
OrganizationGrant numberCountry
Wellcome Trust219477 United Kingdom
Wellcome Trust209194 United Kingdom
Wellcome Trust201536 United Kingdom
Medical Research Council (MRC, United Kingdom)S021264 United Kingdom
CitationJournal: Nat Microbiol / Year: 2021
Title: Molecular structure of the intact bacterial flagellar basal body.
Authors: Steven Johnson / Emily J Furlong / Justin C Deme / Ashley L Nord / Joseph J E Caesar / Fabienne F V Chevance / Richard M Berry / Kelly T Hughes / Susan M Lea /
Abstract: The bacterial flagellum is a macromolecular protein complex that enables motility in many species. Bacterial flagella self-assemble a strong, multicomponent drive shaft that couples rotation in the ...The bacterial flagellum is a macromolecular protein complex that enables motility in many species. Bacterial flagella self-assemble a strong, multicomponent drive shaft that couples rotation in the inner membrane to the micrometre-long flagellar filament that powers bacterial swimming in viscous fluids. Here, we present structures of the intact Salmonella flagellar basal body, encompassing the inner membrane rotor, drive shaft and outer-membrane bushing, solved using cryo-electron microscopy to resolutions of 2.2-3.7 Å. The structures reveal molecular details of how 173 protein molecules of 13 different types assemble into a complex spanning two membranes and a cell wall. The helical drive shaft at one end is intricately interwoven with the rotor component with both the export gate complex and the proximal rod forming interactions with the MS-ring. At the other end, the drive shaft distal rod passes through the LP-ring bushing complex, which functions as a molecular bearing anchored in the outer membrane through interactions with the lipopolysaccharide. The in situ structure of a protein complex capping the drive shaft provides molecular insights into the assembly process of this molecular machine.
History
DepositionJan 7, 2021-
Header (metadata) releaseMay 5, 2021-
Map releaseMay 5, 2021-
UpdateJul 14, 2021-
Current statusJul 14, 2021Processing site: PDBe / Status: Released

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Structure visualization

Movie
  • Surface view with section colored by density value
  • Surface level: 0.011
  • Imaged by UCSF Chimera
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  • Surface view colored by cylindrical radius
  • Surface level: 0.011
  • Imaged by UCSF Chimera
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  • Surface view with fitted model
  • Atomic models: PDB-7bgl
  • Surface level: 0.011
  • Imaged by UCSF Chimera
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  • Simplified surface model + fitted atomic model
  • Atomic modelsPDB-7bgl
  • Imaged by Jmol
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Movie viewer
Structure viewerEM map:
SurfViewMolmilJmol/JSmol
Supplemental images

emd_12183.png

Downloads & links

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Map

FileDownload / File: emd_12183.map.gz / Format: CCP4 / Size: 307.5 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Annotationrefinement map
Voxel sizeX=Y=Z: 0.832 Å
Density
Contour LevelBy AUTHOR: 0.011 / Movie #1: 0.011
Minimum - Maximum-0.01927556 - 0.050039597
Average (Standard dev.)0.00025506705 (±0.0030242172)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions432432432
Spacing432432432
CellA=B=C: 359.424 Å
α=β=γ: 90.0 °

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z0.8320.8320.832
M x/y/z432432432
origin x/y/z0.0000.0000.000
length x/y/z359.424359.424359.424
α/β/γ90.00090.00090.000
MAP C/R/S123
start NC/NR/NS000
NC/NR/NS432432432
D min/max/mean-0.0190.0500.000

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Supplemental data

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Additional map: post processed

Fileemd_12183_additional_1.map
Annotationpost processed
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: half map 1

Fileemd_12183_half_map_1.map
Annotationhalf map 1
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: half map 2

Fileemd_12183_half_map_2.map
Annotationhalf map 2
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Sample components

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Entire : Flagellar LP ring

EntireName: Flagellar LP ring
Components
  • Complex: Flagellar LP ring
    • Protein or peptide: Flagellar L-ring protein
    • Protein or peptide: Flagellar P-ring protein
    • Protein or peptide: YecR
  • Ligand: (2~{R},4~{R},5~{R},6~{R})-6-[(1~{R})-1,2-bis(oxidanyl)ethyl]-4,5-bis(oxidanyl)oxane-2-carboxylic acid
  • Ligand: [(3~{R})-1-[[(2~{R},3~{R},4~{R},5~{S},6~{R})-6-[[(2~{R},3~{R},4~{R},5~{S},6~{R})-3-[[(3~{R})-3-dodecanoyloxytetradecanoyl]amino]-6-(hydroxymethyl)-5-phosphonooxy-4-[(3~{R})-3-tetradecanoyloxytetradecanoyl]oxy-oxan-2-yl]oxymethyl]-5-oxidanyl-4-[(3~{R})-3-oxidanyltetradecanoyl]oxy-2-phosphonooxy-oxan-3-yl]amino]-1-oxidanylidene-tetradecan-3-yl] hexadecanoate

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Supramolecule #1: Flagellar LP ring

SupramoleculeName: Flagellar LP ring / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#3
Source (natural)Organism: Salmonella enterica subsp. enterica serovar Typhi (bacteria)

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Macromolecule #1: Flagellar L-ring protein

MacromoleculeName: Flagellar L-ring protein / type: protein_or_peptide / ID: 1 / Number of copies: 26 / Enantiomer: LEVO
Source (natural)Organism: Salmonella typhimurium (strain LT2 / SGSC1412 / ATCC 700720) (bacteria)
Molecular weightTheoretical: 24.726666 KDa
SequenceString: MQKYALHAYP VMALMVATLT GCAWIPAKPL VQGATTAQPI PGPVPVANGS IFQSAQPINY GYQPLFEDRR PRNIGDTLTI VLQENVSAS KSSSANASRD GKTSFGFDTV PRYLQGLFGN SRADMEASGG NSFNGKGGAN ASNTFSGTLT VTVDQVLANG N LHVVGEKQ ...String:
MQKYALHAYP VMALMVATLT GCAWIPAKPL VQGATTAQPI PGPVPVANGS IFQSAQPINY GYQPLFEDRR PRNIGDTLTI VLQENVSAS KSSSANASRD GKTSFGFDTV PRYLQGLFGN SRADMEASGG NSFNGKGGAN ASNTFSGTLT VTVDQVLANG N LHVVGEKQ IAINQGTEFI RFSGVVNPRT ISGSNSVPST QVADARIEYV GNGYINEAQN MGWLQRFFLN LSPM

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Macromolecule #2: Flagellar P-ring protein

MacromoleculeName: Flagellar P-ring protein / type: protein_or_peptide / ID: 2 / Number of copies: 26 / Enantiomer: LEVO
Source (natural)Organism: Salmonella typhimurium (strain LT2 / SGSC1412 / ATCC 700720) (bacteria)
Molecular weightTheoretical: 38.194176 KDa
SequenceString: MFKALAGIVL ALVATLAHAE RIRDLTSVQG VRENSLIGYG LVVGLDGTGD QTTQTPFTTQ TLNNMLSQLG ITVPTGTNMQ LKNVAAVMV TASYPPFARQ GQTIDVVVSS MGNAKSLRGG TLLMTPLKGV DSQVYALAQG NILVGGAGAS AGGSSVQVNQ L NGGRITNG ...String:
MFKALAGIVL ALVATLAHAE RIRDLTSVQG VRENSLIGYG LVVGLDGTGD QTTQTPFTTQ TLNNMLSQLG ITVPTGTNMQ LKNVAAVMV TASYPPFARQ GQTIDVVVSS MGNAKSLRGG TLLMTPLKGV DSQVYALAQG NILVGGAGAS AGGSSVQVNQ L NGGRITNG AIIERELPTQ FGAGNTINLQ LNDEDFTMAQ QITDAINRAR GYGSATALDA RTVQVRVPSG NSSQVRFLAD IQ NMEVNVT PQDAKVVINS RTGSVVMNRE VTLDSCAVAQ GNLSVTVNRQ LNVNQPNTPF GGGQTVVTPQ TQIDLRQSGG SLQ SVRSSA NLNSVVRALN ALGATPMDLM SILQSMQSAG CLRAKLEII

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Macromolecule #3: YecR

MacromoleculeName: YecR / type: protein_or_peptide / ID: 3 / Number of copies: 26 / Enantiomer: LEVO
Source (natural)Organism: Salmonella typhimurium (strain LT2 / SGSC1412 / ATCC 700720) (bacteria)
Molecular weightTheoretical: 12.194968 KDa
SequenceString:
MKSLIFTLSL LALTGCTITR QAQVSEASPI SGIVRLTYNQ PLFFTSRTDD YVSHGTATRE CQQMGYADAV SFGQPVGTCS IYAGSLCLN TRFTLSWQCR GVAVPQIMPL YY

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Macromolecule #4: (2~{R},4~{R},5~{R},6~{R})-6-[(1~{R})-1,2-bis(oxidanyl)ethyl]-4,5-...

MacromoleculeName: (2~{R},4~{R},5~{R},6~{R})-6-[(1~{R})-1,2-bis(oxidanyl)ethyl]-4,5-bis(oxidanyl)oxane-2-carboxylic acid
type: ligand / ID: 4 / Number of copies: 26 / Formula: TLW
Molecular weightTheoretical: 222.193 Da
Chemical component information

ChemComp-TLW:
(2~{R},4~{R},5~{R},6~{R})-6-[(1~{R})-1,2-bis(oxidanyl)ethyl]-4,5-bis(oxidanyl)oxane-2-carboxylic acid

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Macromolecule #5: [(3~{R})-1-[[(2~{R},3~{R},4~{R},5~{S},6~{R})-6-[[(2~{R},3~{R},4~{...

MacromoleculeName: [(3~{R})-1-[[(2~{R},3~{R},4~{R},5~{S},6~{R})-6-[[(2~{R},3~{R},4~{R},5~{S},6~{R})-3-[[(3~{R})-3-dodecanoyloxytetradecanoyl]amino]-6-(hydroxymethyl)-5-phosphonooxy-4-[(3~{R})-3- ...Name: [(3~{R})-1-[[(2~{R},3~{R},4~{R},5~{S},6~{R})-6-[[(2~{R},3~{R},4~{R},5~{S},6~{R})-3-[[(3~{R})-3-dodecanoyloxytetradecanoyl]amino]-6-(hydroxymethyl)-5-phosphonooxy-4-[(3~{R})-3-tetradecanoyloxytetradecanoyl]oxy-oxan-2-yl]oxymethyl]-5-oxidanyl-4-[(3~{R})-3-oxidanyltetradecanoyl]oxy-2-phosphonooxy-oxan-3-yl]amino]-1-oxidanylidene-tetradecan-3-yl] hexadecanoate
type: ligand / ID: 5 / Number of copies: 26 / Formula: TQN
Molecular weightTheoretical: 2.036774 KDa
Chemical component information

ChemComp-TQN:
[(3~{R})-1-[[(2~{R},3~{R},4~{R},5~{S},6~{R})-6-[[(2~{R},3~{R},4~{R},5~{S},6~{R})-3-[[(3~{R})-3-dodecanoyloxytetradecanoyl]amino]-6-(hydroxymethyl)-5-phosphonooxy-4-[(3~{R})-3-tetradecanoyloxytetradecanoyl]oxy-oxan-2-yl]oxymethyl]-5-oxidanyl-4-[(3~{R})-3-oxidanyltetradecanoyl]oxy-2-phosphonooxy-oxan-3-yl]amino]-1-oxidanylidene-tetradecan-3-yl] hexadecanoate

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Experimental details

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Structure determination

Methodcryo EM
Processingsingle particle reconstruction
Aggregation stateparticle

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Sample preparation

BufferpH: 8
VitrificationCryogen name: ETHANE

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELDBright-field microscopy
Image recordingFilm or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Average electron dose: 59.0 e/Å2
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

CTF correctionSoftware - Name: SIMPLE (ver. 3.0)
Initial angle assignmentType: MAXIMUM LIKELIHOOD / Software - Name: RELION (ver. 3.1)
Final angle assignmentType: MAXIMUM LIKELIHOOD / Software - Name: RELION (ver. 3.1)
Final reconstructionApplied symmetry - Point group: C26 (26 fold cyclic) / Resolution.type: BY AUTHOR / Resolution: 2.2 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: RELION (ver. 3.1) / Number images used: 31643
FSC plot (resolution estimation)

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