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- EMDB-41600: Open, inward-facing MsbA structure (OIF3) -

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ID or keywords:

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Basic information

Entry
Database: EMDB / ID: EMD-41600
TitleOpen, inward-facing MsbA structure (OIF3)
Map data
Sample
  • Complex: E. coli MsbA incubated with ATP for 6 hours
    • Protein or peptide: ATP-binding transport protein MsbA
KeywordsABC transporter / TRANSPORT PROTEIN
Function / homology
Function and homology information


Hydrolases; Acting on acid anhydrides; Acting on acid anhydrides to catalyse transmembrane movement of substances / ATPase-coupled lipid transmembrane transporter activity / ABC-type transporter activity / ATP hydrolysis activity / ATP binding / membrane
Similarity search - Function
ABC transporter, lipid A-core flippase, MsbA / Type 1 protein exporter / ABC transporter transmembrane region / ABC transporter type 1, transmembrane domain / ABC transporter integral membrane type-1 fused domain profile. / ABC transporter type 1, transmembrane domain superfamily / ABC transporter-like, conserved site / ABC transporters family signature. / ABC transporter / ABC transporter-like, ATP-binding domain ...ABC transporter, lipid A-core flippase, MsbA / Type 1 protein exporter / ABC transporter transmembrane region / ABC transporter type 1, transmembrane domain / ABC transporter integral membrane type-1 fused domain profile. / ABC transporter type 1, transmembrane domain superfamily / ABC transporter-like, conserved site / ABC transporters family signature. / ABC transporter / ABC transporter-like, ATP-binding domain / ATP-binding cassette, ABC transporter-type domain profile. / ATPases associated with a variety of cellular activities / AAA+ ATPase domain / P-loop containing nucleoside triphosphate hydrolase
Similarity search - Domain/homology
ATP-binding transport protein MsbA
Similarity search - Component
Biological speciesEscherichia coli (E. coli)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.7 Å
AuthorsYang B / Zhang T / Lyu J / Laganowsky AD / Zhao M
Funding support United States, 5 items
OrganizationGrant numberCountry
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)GM121751 United States
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)GM139876 United States
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)GM138863 United States
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)GM145416 United States
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)GM143052 United States
CitationJournal: To Be Published
Title: Native mass spectrometry captures snapshots of the MsbA transport cycle
Authors: Zhang T / Lyu J / Yang B / Zhao M / Laganowsky AD
History
DepositionAug 11, 2023-
Header (metadata) releaseJun 19, 2024-
Map releaseJun 19, 2024-
UpdateJun 19, 2024-
Current statusJun 19, 2024Processing site: RCSB / Status: Released

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Structure visualization

Supplemental images

emd_41600.png

Downloads & links

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Map

FileDownload / File: emd_41600.map.gz / Format: CCP4 / Size: 64 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
1.07 Å/pix.
x 256 pix.
= 272.64 Å		1.07 Å/pix.
x 256 pix.
= 272.64 Å		1.07 Å/pix.
x 256 pix.
= 272.64 Å

Surface

Projections

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Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 1.065 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.4
Minimum - Maximum-1.7197165 - 2.3002257
Average (Standard dev.)0.001252823 (±0.04232223)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions256256256
Spacing256256256
CellA=B=C: 272.64 Å
α=β=γ: 90.0 °

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Supplemental data

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Mask #1

Fileemd_41600_msk_1.map
Projections & Slices
AxesZYX

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Slices (1/2)
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Histogram

Histogram (log scale)

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Additional map: #1

Fileemd_41600_additional_1.map
Projections & Slices
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Half map: #2

Fileemd_41600_half_map_1.map
Projections & Slices
AxesZYX

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Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: #1

Fileemd_41600_half_map_2.map
Projections & Slices
AxesZYX

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Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Sample components

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Entire : E. coli MsbA incubated with ATP for 6 hours

EntireName: E. coli MsbA incubated with ATP for 6 hours
Components
  • Complex: E. coli MsbA incubated with ATP for 6 hours
    • Protein or peptide: ATP-binding transport protein MsbA

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Supramolecule #1: E. coli MsbA incubated with ATP for 6 hours

SupramoleculeName: E. coli MsbA incubated with ATP for 6 hours / type: complex / ID: 1 / Parent: 0 / Macromolecule list: all
Source (natural)Organism: Escherichia coli (E. coli)

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Macromolecule #1: ATP-binding transport protein MsbA

MacromoleculeName: ATP-binding transport protein MsbA / type: protein_or_peptide / ID: 1 / Number of copies: 2 / Enantiomer: LEVO
EC number: Hydrolases; Acting on acid anhydrides; Acting on acid anhydrides to catalyse transmembrane movement of substances
Source (natural)Organism: Escherichia coli (E. coli)
Molecular weightTheoretical: 64.543473 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString: GSHNDKDLST WQTFRRLWPT IAPFKAGLIV AGVALILNAA SDTFMLSLLK PLLDDGFGKT DRSVLVWMPL VVIGLMILRG ITSYVSSYC ISWVSGKVVM TMRRRLFGHM MGMPVSFFDK QSTGTLLSRI TYDSEQVASS SSGALITVVR EGASIIGLFI M MFYYSWQL ...String:
GSHNDKDLST WQTFRRLWPT IAPFKAGLIV AGVALILNAA SDTFMLSLLK PLLDDGFGKT DRSVLVWMPL VVIGLMILRG ITSYVSSYC ISWVSGKVVM TMRRRLFGHM MGMPVSFFDK QSTGTLLSRI TYDSEQVASS SSGALITVVR EGASIIGLFI M MFYYSWQL SIILIVLAPI VSIAIRVVSK RFRNISKNMQ NTMGQVTTSA EQMLKGHKEV LIFGGQEVET KRFDKVSNRM RL QGMKMVS ASSISDPIIQ LIASLALAFV LYAASFPSVM DSLTAGTITV VFSSMIALMR PLKSLTNVNA QFQRGMAACQ TLF TILDSE QEKDEGKRVI ERATGDVEFR NVTFTYPGRD VPALRNINLK IPAGKTVALV GRSGSGKSTI ASLITRFYDI DEGE ILMDG HDLREYTLAS LRNQVALVSQ NVHLFNDTVA NNIAYARTEQ YSREQIEEAA RMAYAMDFIN KMDNGLDTVI GENGV LLSG GQRQRIAIAR ALLRDSPILI LDEATSALDT ESERAIQAAL DELQKNRTSL VIAHRLSTIE KADEIVVVED GVIVER GTH NDLLEHRGVY AQLHKMQFGQ

UniProtKB: ATP-binding transport protein MsbA

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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

Concentration8 mg/mL
BufferpH: 7.4
VitrificationCryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 281 K / Instrument: FEI VITROBOT MARK IV

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Image recordingFilm or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Average electron dose: 50.0 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 2.5 µm / Nominal defocus min: 1.0 µm
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Startup modelType of model: INSILICO MODEL
In silico model: Ab initio reconstruction implemented in cryoSPARC
Details: Ab initio reconstruction implemented in cryoSPARC
Final reconstructionResolution.type: BY AUTHOR / Resolution: 3.7 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: cryoSPARC / Number images used: 91092
Initial angle assignmentType: RANDOM ASSIGNMENT / Software - Name: cryoSPARC
Final angle assignmentType: MAXIMUM LIKELIHOOD / Software - Name: cryoSPARC
FSC plot (resolution estimation)

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Atomic model buiding 1

RefinementSpace: REAL / Protocol: AB INITIO MODEL
Output model

PDB-8tss:
Open, inward-facing MsbA structure (OIF3)

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