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- EMDB-43763: rabbit actin in the absence of potassium -

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Open data


ID or keywords:

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Basic information

Entry
Database: EMDB / ID: EMD-43763
Titlerabbit actin in the absence of potassium
Map datarabbit actin without potassium
Sample
  • Organelle or cellular component: actin filament
    • Protein or peptide: Actin, alpha skeletal muscle
  • Ligand: ADENOSINE-5'-DIPHOSPHATE
  • Ligand: MAGNESIUM ION
Keywordsactin / STRUCTURAL PROTEIN
Function / homology
Function and homology information


cytoskeletal motor activator activity / myosin heavy chain binding / tropomyosin binding / troponin I binding / filamentous actin / mesenchyme migration / actin filament bundle / actin filament bundle assembly / skeletal muscle myofibril / striated muscle thin filament ...cytoskeletal motor activator activity / myosin heavy chain binding / tropomyosin binding / troponin I binding / filamentous actin / mesenchyme migration / actin filament bundle / actin filament bundle assembly / skeletal muscle myofibril / striated muscle thin filament / skeletal muscle thin filament assembly / actin monomer binding / stress fiber / skeletal muscle fiber development / titin binding / actin filament polymerization / filopodium / actin filament / Hydrolases; Acting on acid anhydrides; Acting on acid anhydrides to facilitate cellular and subcellular movement / calcium-dependent protein binding / lamellipodium / cell body / hydrolase activity / protein domain specific binding / calcium ion binding / positive regulation of gene expression / magnesium ion binding / ATP binding / identical protein binding / cytoplasm
Similarity search - Function
Actins signature 1. / Actin, conserved site / Actins signature 2. / Actin/actin-like conserved site / Actins and actin-related proteins signature. / Actin / Actin family / Actin / ATPase, nucleotide binding domain
Similarity search - Domain/homology
Actin, alpha skeletal muscle
Similarity search - Component
Biological speciesOryctolagus cuniculus (rabbit)
Methodhelical reconstruction / cryo EM / Resolution: 2.27 Å
AuthorsVolkmann N / Sindelair CV / Huehn AE
Funding support United States, 1 items
OrganizationGrant numberCountry
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS) United States
CitationJournal: To Be Published
Title: rabbit actin in the absence of potassium
Authors: Volkmann N
History
DepositionFeb 21, 2024-
Header (metadata) releaseFeb 26, 2025-
Map releaseFeb 26, 2025-
UpdateFeb 26, 2025-
Current statusFeb 26, 2025Processing site: RCSB / Status: Released

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Structure visualization

Supplemental images

emd_43763.png

Downloads & links

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Map

FileDownload / File: emd_43763.map.gz / Format: CCP4 / Size: 144.7 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Annotationrabbit actin without potassium
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
0.83 Å/pix.
x 336 pix.
= 278.544 Å		0.83 Å/pix.
x 336 pix.
= 278.544 Å		0.83 Å/pix.
x 336 pix.
= 278.544 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 0.829 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.8
Minimum - Maximum-1.7248529 - 6.570632
Average (Standard dev.)0.0063943956 (±0.24632959)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions336336336
Spacing336336336
CellA=B=C: 278.544 Å
α=β=γ: 90.0 °

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Supplemental data

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Half map: rabbit actin without potassium - half map 2

Fileemd_43763_half_map_1.map
Annotationrabbit actin without potassium - half map 2
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: rabbit actin without potassium - half map 1

Fileemd_43763_half_map_2.map
Annotationrabbit actin without potassium - half map 1
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Sample components

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Entire : actin filament

EntireName: actin filament
Components
  • Organelle or cellular component: actin filament
    • Protein or peptide: Actin, alpha skeletal muscle
  • Ligand: ADENOSINE-5'-DIPHOSPHATE
  • Ligand: MAGNESIUM ION

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Supramolecule #1: actin filament

SupramoleculeName: actin filament / type: organelle_or_cellular_component / ID: 1 / Parent: 0 / Macromolecule list: #1
Source (natural)Organism: Oryctolagus cuniculus (rabbit)

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Macromolecule #1: Actin, alpha skeletal muscle

MacromoleculeName: Actin, alpha skeletal muscle / type: protein_or_peptide / ID: 1 / Number of copies: 5 / Enantiomer: LEVO
EC number: Hydrolases; Acting on acid anhydrides; Acting on acid anhydrides to facilitate cellular and subcellular movement
Source (natural)Organism: Oryctolagus cuniculus (rabbit)
Molecular weightTheoretical: 41.387227 KDa
Recombinant expressionOrganism: Oryctolagus cuniculus (rabbit)
SequenceString: TTALVCDNGS GLVKAGFAGD DAPRAVFPSI VGRPRHQGVM VGMGQKDSYV GDEAQSKRGI LTLKYPIE(HIC)G IITNWD DME KIWHHTFYNE LRVAPEEHPT LLTEAPLNPK ANREKMTQIM FETFNVPAMY VAIQAVLSLY ASGRTTGIVL DSGDGVT HN VPIYEGYALP ...String:
TTALVCDNGS GLVKAGFAGD DAPRAVFPSI VGRPRHQGVM VGMGQKDSYV GDEAQSKRGI LTLKYPIE(HIC)G IITNWD DME KIWHHTFYNE LRVAPEEHPT LLTEAPLNPK ANREKMTQIM FETFNVPAMY VAIQAVLSLY ASGRTTGIVL DSGDGVT HN VPIYEGYALP HAIMRLDLAG RDLTDYLMKI LTERGYSFVT TAEREIVRDI KEKLCYVALD FENEMATAAS SSSLEKSY E LPDGQVITIG NERFRCPETL FQPSFIGMES AGIHETTYNS IMKCDIDIRK DLYANNVMSG GTTMYPGIAD RMQKEITAL APSTMKIKII APPERKYSVW IGGSILASLS TFQQMWITKQ EYDEAGPSIV HRKCF

UniProtKB: Actin, alpha skeletal muscle

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Macromolecule #2: ADENOSINE-5'-DIPHOSPHATE

MacromoleculeName: ADENOSINE-5'-DIPHOSPHATE / type: ligand / ID: 2 / Number of copies: 5 / Formula: ADP
Molecular weightTheoretical: 427.201 Da
Chemical component information

ChemComp-ADP:
ADENOSINE-5'-DIPHOSPHATE / ADP, energy-carrying molecule*YM

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Macromolecule #3: MAGNESIUM ION

MacromoleculeName: MAGNESIUM ION / type: ligand / ID: 3 / Number of copies: 5 / Formula: MG
Molecular weightTheoretical: 24.305 Da

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Experimental details

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Structure determination

Methodcryo EM
Processinghelical reconstruction
Aggregation statefilament

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Sample preparation

BufferpH: 7.5
VitrificationCryogen name: ETHANE

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Electron microscopy

MicroscopeFEI TITAN
Image recordingFilm or detector model: GATAN K3 (6k x 4k) / Average electron dose: 36.4 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: 1.2 µm

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Image processing

Final reconstructionApplied symmetry - Helical parameters - Δz: 27.51 Å
Applied symmetry - Helical parameters - Δ&Phi: -166.47 °
Applied symmetry - Helical parameters - Axial symmetry: C1 (asymmetric)
Resolution.type: BY AUTHOR / Resolution: 2.27 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 5920217
Startup modelType of model: INSILICO MODEL
Final angle assignmentType: NOT APPLICABLE

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