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- EMDB-48409: E. coli SR1 single-ring GroEL templated into pseudo-double-ring c... -

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Basic information

Entry
Database: EMDB / ID: EMD-48409
TitleE. coli SR1 single-ring GroEL templated into pseudo-double-ring complex with PBZ1587 inhibitor
Map data
Sample
  • Complex: E. coli SR1 + PBZ1587
    • Protein or peptide: Chaperonin GroEL
  • Ligand: N-(2-{4-[4-(aminomethyl)benzene-1-sulfonamido]phenyl}-1,3-benzoxazol-5-yl)-5-chlorothiophene-2-sulfonamide
KeywordsChaperone Inhibitor / CHAPERONE
Function / homology
Function and homology information


chaperonin ATPase / isomerase activity / ATP-dependent protein folding chaperone / unfolded protein binding / protein refolding / ATP binding / metal ion binding / cytoplasm
Similarity search - Function
Chaperonin Cpn60, conserved site / Chaperonins cpn60 signature. / Chaperonin Cpn60/GroEL / GroEL-like equatorial domain superfamily / TCP-1-like chaperonin intermediate domain superfamily / GroEL-like apical domain superfamily / TCP-1/cpn60 chaperonin family / Chaperonin Cpn60/GroEL/TCP-1 family
Similarity search - Domain/homology
Biological speciesEscherichia coli (E. coli)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.0 Å
AuthorsJohnson SM / Chen Q
Funding support United States, 1 items
OrganizationGrant numberCountry
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)R01GM120350 United States
CitationJournal: To Be Published
Title: Deciphering the unique mechanism whereby bis-sulfonamido-2-phenylbenzoxazole (PBZ) GroEL/ES inhibitors modulate chaperonin ATPase and client protein folding functions.
Authors: Stevens M / Doud E / Norambuena J / Tepper K / Trindl CA / Carpenter R / Chapman E / Boyd JM / Wells C / Chen Q / Johnson SM
History
DepositionDec 20, 2024-
Header (metadata) releaseJan 21, 2026-
Map releaseJan 21, 2026-
UpdateJan 21, 2026-
Current statusJan 21, 2026Processing site: RCSB / Status: Released

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Structure visualization

Supplemental images

emd_48409.png

Downloads & links

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Map

FileDownload / File: emd_48409.map.gz / Format: CCP4 / Size: 178 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
1.05 Å/pix.
x 360 pix.
= 379.44 Å		1.05 Å/pix.
x 360 pix.
= 379.44 Å		1.05 Å/pix.
x 360 pix.
= 379.44 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 1.054 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.458
Minimum - Maximum-1.2435267 - 2.0572007
Average (Standard dev.)0.00042468403 (±0.06671748)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions360360360
Spacing360360360
CellA=B=C: 379.44 Å
α=β=γ: 90.0 °

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Supplemental data

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Half map: #2

Fileemd_48409_half_map_1.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: #1

Fileemd_48409_half_map_2.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Sample components

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Entire : E. coli SR1 + PBZ1587

EntireName: E. coli SR1 + PBZ1587
Components
  • Complex: E. coli SR1 + PBZ1587
    • Protein or peptide: Chaperonin GroEL
  • Ligand: N-(2-{4-[4-(aminomethyl)benzene-1-sulfonamido]phenyl}-1,3-benzoxazol-5-yl)-5-chlorothiophene-2-sulfonamide

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Supramolecule #1: E. coli SR1 + PBZ1587

SupramoleculeName: E. coli SR1 + PBZ1587 / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1
Details: E. coli SR1 single-ring GroEL templated into pseudo-double-ring complex with PBZ1587 inhibitor.
Source (natural)Organism: Escherichia coli (E. coli)

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Macromolecule #1: Chaperonin GroEL

MacromoleculeName: Chaperonin GroEL / type: protein_or_peptide / ID: 1 / Number of copies: 14 / Enantiomer: LEVO / EC number: chaperonin ATPase
Source (natural)Organism: Escherichia coli (E. coli)
Molecular weightTheoretical: 57.261539 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString: MAAKDVKFGN DARVKMLRGV NVLADAVKVT LGPKGRNVVL DKSFGAPTIT KDGVSVAREI ELEDKFENMG AQMVKEVASK ANDAAGDGT TTATVLAQAI ITEGLKAVAA GMNPMDLKRG IDKAVTAAVE ELKALSVPCS DSKAIAQVGT ISANSDETVG K LIAEAMDK ...String:
MAAKDVKFGN DARVKMLRGV NVLADAVKVT LGPKGRNVVL DKSFGAPTIT KDGVSVAREI ELEDKFENMG AQMVKEVASK ANDAAGDGT TTATVLAQAI ITEGLKAVAA GMNPMDLKRG IDKAVTAAVE ELKALSVPCS DSKAIAQVGT ISANSDETVG K LIAEAMDK VGKEGVITVE DGTGLQDELD VVEGMQFDRG YLSPYFINKP ETGAVELESP FILLADKKIS NIREMLPVLE AV AKAGKPL LIIAEDVEGE ALATLVVNTM RGIVKVAAVK APGFGDRRKA MLQDIATLTG GTVISEEIGM ELEKATLEDL GQA KRVVIN KDTTTIIDGV GEEAAIQGRV AQIRQQIEEA TSDYDREKLQ ERVAKLAGGV AVIKVGAATE VEMKEKKARV EDAL HATRA AVEEGVVAGG GVALIRVASK LADLRGQNED QNVGIKVALR AMEAPLEQIV LNCGEAPAAV ANTVKGGDGN YGYNA ATEE YGNMIDMGIL DPTKVTRSAL QYAASVAGLM ITTECMVTDL PKNDAADLGA AGGMGGMGGM GGMM

UniProtKB: Chaperonin GroEL

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Macromolecule #2: N-(2-{4-[4-(aminomethyl)benzene-1-sulfonamido]phenyl}-1,3-benzoxa...

MacromoleculeName: N-(2-{4-[4-(aminomethyl)benzene-1-sulfonamido]phenyl}-1,3-benzoxazol-5-yl)-5-chlorothiophene-2-sulfonamide
type: ligand / ID: 2 / Number of copies: 7 / Formula: A1AS6
Molecular weightTheoretical: 575.079 Da

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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: 7.5
VitrificationCryogen name: ETHANE

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Electron microscopy

MicroscopeTFS KRIOS
Image recordingFilm or detector model: GATAN K3 (6k x 4k) / Average electron dose: 56.0 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: 0.5 µm
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

CTF correctionType: NONE
Startup modelType of model: INSILICO MODEL
Final reconstructionResolution.type: BY AUTHOR / Resolution: 3.0 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 418649
Initial angle assignmentType: COMMON LINE
Final angle assignmentType: COMMON LINE
FSC plot (resolution estimation)

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