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- EMDB-49837: mjHSP16.5 34mer (+lysozyme, 75C) -

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Open data


ID or keywords:

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Basic information

Entry
Database: EMDB / ID: EMD-49837
TitlemjHSP16.5 34mer (+lysozyme, 75C)
Map data
Sample
  • Complex: mjHSP16.5 and lysozyme, 75C
    • Protein or peptide: Small heat shock protein HSP16.5
KeywordssHSP / thermophile / holdase / CHAPERONE
Function / homology
Function and homology information


protein complex oligomerization / response to salt stress / protein folding chaperone / response to hydrogen peroxide / unfolded protein binding / protein folding / response to heat / protein stabilization / protein-containing complex / identical protein binding / cytoplasm
Similarity search - Function
Hsp20/alpha crystallin family / Small heat shock protein (sHSP) domain profile. / Alpha crystallin/Hsp20 domain / HSP20-like chaperone
Similarity search - Domain/homology
Small heat shock protein HSP16.5
Similarity search - Component
Biological speciesMethanocaldococcus jannaschii (archaea)
Methodsingle particle reconstruction / cryo EM / Resolution: 4.71 Å
AuthorsMiller AP / Reichow SL
Funding support United States, 1 items
OrganizationGrant numberCountry
National Institutes of Health/National Eye Institute (NIH/NEI) United States
CitationJournal: To Be Published
Title: Mechanisms of small heat shock protein client sequestration and induced polydispersity
Authors: Miller AP / Reichow SL
History
DepositionMar 20, 2025-
Header (metadata) releaseApr 16, 2025-
Map releaseApr 16, 2025-
UpdateApr 16, 2025-
Current statusApr 16, 2025Processing site: RCSB / Status: Released

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Structure visualization

Supplemental images

emd_49837.png

Downloads & links

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Map

FileDownload / File: emd_49837.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.)
1.25 Å/pix.
x 256 pix.
= 320. Å		1.25 Å/pix.
x 256 pix.
= 320. Å		1.25 Å/pix.
x 256 pix.
= 320. Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 1.25 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 3.22
Minimum - Maximum-17.932358000000001 - 28.039064
Average (Standard dev.)0.000000000001622 (±1.0)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions256256256
Spacing256256256
CellA=B=C: 320.0 Å
α=β=γ: 90.0 °

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Supplemental data

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Half map: half map B

Fileemd_49837_half_map_1.map
Annotationhalf map B
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: half map A

Fileemd_49837_half_map_2.map
Annotationhalf map A
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Sample components

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Entire : mjHSP16.5 and lysozyme, 75C

EntireName: mjHSP16.5 and lysozyme, 75C
Components
  • Complex: mjHSP16.5 and lysozyme, 75C
    • Protein or peptide: Small heat shock protein HSP16.5

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Supramolecule #1: mjHSP16.5 and lysozyme, 75C

SupramoleculeName: mjHSP16.5 and lysozyme, 75C / type: complex / ID: 1 / Parent: 0 / Macromolecule list: all
Source (natural)Organism: Methanocaldococcus jannaschii (archaea)

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Macromolecule #1: Small heat shock protein HSP16.5

MacromoleculeName: Small heat shock protein HSP16.5 / type: protein_or_peptide / ID: 1 / Number of copies: 34 / Enantiomer: LEVO
Source (natural)Organism: Methanocaldococcus jannaschii (archaea)
Molecular weightTheoretical: 16.46999 KDa
Recombinant expressionOrganism: Escherichia coli BL21(DE3) (bacteria)
SequenceString:
MFGRDPFDSL FERMFKEFFA TPMTGTTMIQ SSTGIQISGK GFMPISIIEG DQHIKVIAWL PGVNKEDIIL NAVGDTLEIR AKRSPLMIT ESERIIYSEI PEEEEIYRTI KLPATVKEEN ASAKFENGVL SVILPKAESS IKKGINIE

UniProtKB: Small heat shock protein HSP16.5

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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: 7.4
VitrificationCryogen name: ETHANE

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Electron microscopy

MicroscopeTFS KRIOS
Image recordingFilm or detector model: GATAN K3 BIOCONTINUUM (6k x 4k) / Average electron dose: 50.0 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: SPOT SCAN / Imaging mode: BRIGHT FIELD / Nominal defocus max: 4.0 µm / Nominal defocus min: 1.5 µm
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Startup modelType of model: NONE
Final reconstructionResolution.type: BY AUTHOR / Resolution: 4.71 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 202648
Initial angle assignmentType: MAXIMUM LIKELIHOOD
Final angle assignmentType: MAXIMUM LIKELIHOOD
FSC plot (resolution estimation)

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