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- EMDB-54871: F-actin in complex with USP54 M1 actin binding motif -

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Basic information

Entry
Database: EMDB / ID: EMD-54871
TitleF-actin in complex with USP54 M1 actin binding motif
Map data
Sample
  • Complex: F-actin-USP54_M1
    • Protein or peptide: Actin binding motif
    • Protein or peptide: Actin, alpha skeletal muscle
  • Ligand: MAGNESIUM ION
  • Ligand: ADENOSINE-5'-DIPHOSPHATE
KeywordsActin / STRUCTURAL PROTEIN
Function / homology
Function and homology information


Regulation of CDH1 Function / Striated Muscle Contraction / striated muscle thin filament / skeletal muscle thin filament assembly / skeletal muscle fiber development / stress fiber / actin filament / Hydrolases; Acting on acid anhydrides; Acting on acid anhydrides to facilitate cellular and subcellular movement / actin cytoskeleton / hydrolase activity / ATP binding
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 speciesHomo sapiens (human) / Gallus gallus (chicken)
Methodhelical reconstruction / cryo EM / Resolution: 3.8 Å
AuthorsYuan B / Paraschiakos T / Windhorst S / Marlovits TC
Funding support1 items
OrganizationGrant numberCountry
Not funded
CitationJournal: To Be Published
Title: F-actin in complex with USP54 M1 actin binding motif
Authors: Yuan B / Paraschiakos T / Windhorst S / Marlovits TC
History
DepositionAug 22, 2025-
Header (metadata) releaseApr 29, 2026-
Map releaseApr 29, 2026-
UpdateApr 29, 2026-
Current statusApr 29, 2026Processing site: PDBe / Status: Released

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Structure visualization

Supplemental images

emd_54871.png

Downloads & links

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Map

FileDownload / File: emd_54871.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.)
0.91 Å/pix.
x 256 pix.
= 232.96 Å		0.91 Å/pix.
x 256 pix.
= 232.96 Å		0.91 Å/pix.
x 256 pix.
= 232.96 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 0.91 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.05
Minimum - Maximum-0.30268943 - 0.6557472
Average (Standard dev.)0.0012539824 (±0.030460518)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions256256256
Spacing256256256
CellA=B=C: 232.96 Å
α=β=γ: 90.0 °

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Supplemental data

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Half map: #2

Fileemd_54871_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_54871_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 : F-actin-USP54_M1

EntireName: F-actin-USP54_M1
Components
  • Complex: F-actin-USP54_M1
    • Protein or peptide: Actin binding motif
    • Protein or peptide: Actin, alpha skeletal muscle
  • Ligand: MAGNESIUM ION
  • Ligand: ADENOSINE-5'-DIPHOSPHATE

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Supramolecule #1: F-actin-USP54_M1

SupramoleculeName: F-actin-USP54_M1 / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#2
Source (natural)Organism: Homo sapiens (human)

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Macromolecule #1: Actin binding motif

MacromoleculeName: Actin binding motif / type: protein_or_peptide / ID: 1 / Number of copies: 5 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 33.529469 KDa
Recombinant expressionOrganism: Escherichia coli BL21(DE3) (bacteria)
SequenceString: MIPSTKGSVR SLIEQFERIQ GVSAGDPPVA TSVSKGEELF TGVVPILVEL DGDVNGHKFS VSGEGEGDAT YGKLTLKFIC TTGKLPVPW PTLVTTLTYG VQCFSRYPDH MKQHDFFKSA MPEGYVQERT IFFKDDGNYK TRAEVKFEGD TLVNRIELKG I DFKEDGNI ...String:
MIPSTKGSVR SLIEQFERIQ GVSAGDPPVA TSVSKGEELF TGVVPILVEL DGDVNGHKFS VSGEGEGDAT YGKLTLKFIC TTGKLPVPW PTLVTTLTYG VQCFSRYPDH MKQHDFFKSA MPEGYVQERT IFFKDDGNYK TRAEVKFEGD TLVNRIELKG I DFKEDGNI LGHKLEYNYN SHNVYIMADK QKNGIKVNFK IRHNIEDGSV QLADHYQQNT PIGDGPVLLP DNHYLSTQSA LS KDPNEKR DHMVLLEFVT AAGITLGMDE LYKADENLYF QGGGSGGSSK HHHHSGHHHT GHHH

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Macromolecule #2: Actin, alpha skeletal muscle

MacromoleculeName: Actin, alpha skeletal muscle / type: protein_or_peptide / ID: 2 / 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: Gallus gallus (chicken)
Molecular weightTheoretical: 42.109973 KDa
SequenceString: MCDEDETTAL VCDNGSGLVK AGFAGDDAPR AVFPSIVGRP RHQGVMVGMG QKDSYVGDEA QSKRGILTLK YPIE(HIC)G IIT NWDDMEKIWH HTFYNELRVA PEEHPTLLTE APLNPKANRE KMTQIMFETF NVPAMYVAIQ AVLSLYASGR TTGIVLD SG DGVTHNVPIY ...String:
MCDEDETTAL VCDNGSGLVK AGFAGDDAPR AVFPSIVGRP RHQGVMVGMG QKDSYVGDEA QSKRGILTLK YPIE(HIC)G IIT NWDDMEKIWH HTFYNELRVA PEEHPTLLTE APLNPKANRE KMTQIMFETF NVPAMYVAIQ AVLSLYASGR TTGIVLD SG DGVTHNVPIY EGYALPHAIM RLDLAGRDLT DYLMKILTER GYSFVTTAER EIVRDIKEKL CYVALDFENE MATAASSS S LEKSYELPDG QVITIGNERF RCPETLFQPS FIGMESAGIH ETTYNSIMKC DIDIRKDLYA NNVMSGGTTM YPGIADRMQ KEITALAPST MKIKIIAPPE RKYSVWIGGS ILASLSTFQQ MWITKQEYDE AGPSIVHRKC F

UniProtKB: Actin, alpha skeletal muscle

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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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Macromolecule #4: ADENOSINE-5'-DIPHOSPHATE

MacromoleculeName: ADENOSINE-5'-DIPHOSPHATE / type: ligand / ID: 4 / 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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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

MicroscopeTFS GLACIOS
Image recordingFilm or detector model: TFS FALCON 4i (4k x 4k) / Average electron dose: 40.0 e/Å2
Electron beamAcceleration voltage: 200 kV / Electron source: FIELD EMISSION GUN
Electron opticsC2 aperture diameter: 50.0 µm / Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 2.0 µm / Nominal defocus min: 0.5 µm

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Image processing

Final reconstructionApplied symmetry - Helical parameters - Δz: 27.5 Å
Applied symmetry - Helical parameters - Δ&Phi: -166.8 °
Applied symmetry - Helical parameters - Axial symmetry: C1 (asymmetric)
Resolution.type: BY AUTHOR / Resolution: 3.8 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: cryoSPARC / Number images used: 111239
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
Startup modelType of model: INSILICO MODEL
Final angle assignmentType: NOT APPLICABLE
FSC plot (resolution estimation)

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