[English] 日本語
Yorodumi
- EMDB-16854: Cryo-EM structure of actomyosin-5a-S1 with the full-length lever ... -

+
Open data


ID or keywords:

Loading...

-
Basic information

Entry
Database: EMDB / ID: EMD-16854
TitleCryo-EM structure of actomyosin-5a-S1 with the full-length lever (nucleotide free, class H)
Map dataDeepEMhancer map
Sample
  • Complex: Myosin-5a bound to F-actin
    • Complex: Actin, alpha skeletal muscle
    • Complex: Unconventional myosin-Va with calmodulin-1 bound
      • Complex: Calmodulin-1
Keywordsmyosin / cytoskeletal motor / myosin-va / myo5a / myosin-5a / S1 / rigor / nucleotide free / apo / lever / 6IQ / actomyosin / actomyosin-5a / actin / actomyosin-va / actin bound / MOTOR PROTEIN
Biological speciesOryctolagus cuniculus (rabbit) / Mus musculus (house mouse)
Methodsingle particle reconstruction / cryo EM / Resolution: 8.2 Å
AuthorsGravett MSC / Klebl DP / Harlen OG / Read DJ / Harris SA / Muench SP / Peckham M
Funding support United Kingdom, 5 items
OrganizationGrant numberCountry
Wellcome Trust102174/B/13/Z United Kingdom
Wellcome Trust223125/Z/21/Z United Kingdom
Wellcome Trust108466/Z/15/Z United Kingdom
Engineering and Physical Sciences Research CouncilEP/T022167/1 United Kingdom
Engineering and Physical Sciences Research CouncilEP/R013012 United Kingdom
CitationJournal: Structure / Year: 2024
Title: Exploiting cryo-EM structures of actomyosin-5a to reveal the physical properties of its lever.
Authors: Molly S C Gravett / David P Klebl / Oliver G Harlen / Daniel J Read / Stephen P Muench / Sarah A Harris / Michelle Peckham /
Abstract: Myosin 5a (Myo5a) is a dimeric processive motor protein that transports cellular cargos along filamentous actin (F-actin). Its long lever is responsible for its large power-stroke, step size, and ...Myosin 5a (Myo5a) is a dimeric processive motor protein that transports cellular cargos along filamentous actin (F-actin). Its long lever is responsible for its large power-stroke, step size, and load-bearing ability. Little is known about the levers' structure and physical properties, and how they contribute to walking mechanics. Using cryoelectron microscopy (cryo-EM) and molecular dynamics (MD) simulations, we resolved the structure of monomeric Myo5a, comprising the motor domain and full-length lever, bound to F-actin. The range of its lever conformations revealed its physical properties, how stiffness varies along its length and predicts a large, 35 nm, working stroke. Thus, the newly released trail head in a dimeric Myo5a would only need to perform a small diffusive search for its new binding site on F-actin, and stress would only be generated across the dimer once phosphate is released from the lead head, revealing new insight into the walking behavior of Myo5a.
History
DepositionMar 14, 2023-
Header (metadata) releaseSep 25, 2024-
Map releaseSep 25, 2024-
UpdateApr 9, 2025-
Current statusApr 9, 2025Processing site: PDBe / Status: Released

-
Structure visualization

Supplemental images

emd_16854.png

Downloads & links

-
Map

FileDownload / File: emd_16854.map.gz / Format: CCP4 / Size: 59.6 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
AnnotationDeepEMhancer map
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
2.13 Å/pix.
x 250 pix.
= 532.5 Å		2.13 Å/pix.
x 250 pix.
= 532.5 Å		2.13 Å/pix.
x 250 pix.
= 532.5 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 2.13 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.28
Minimum - Maximum-0.0010183624 - 1.2896259
Average (Standard dev.)0.001532592 (±0.026962008)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions250250250
Spacing250250250
CellA=B=C: 532.5 Å
α=β=γ: 90.0 °

-
Supplemental data

-
Mask #1

Fileemd_16854_msk_1.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

-
Additional map: Raw map

Fileemd_16854_additional_1.map
AnnotationRaw map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

-
Additional map: Gaussian filtered (SD 5) map

Fileemd_16854_additional_2.map
AnnotationGaussian filtered (SD 5) map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

-
Additional map: Masked post-processed map

Fileemd_16854_additional_3.map
AnnotationMasked post-processed map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

-
Half map: Half map 2

Fileemd_16854_half_map_1.map
AnnotationHalf map 2
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

-
Half map: Half map 1

Fileemd_16854_half_map_2.map
AnnotationHalf map 1
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

-
Sample components

-
Entire : Myosin-5a bound to F-actin

EntireName: Myosin-5a bound to F-actin
Components
  • Complex: Myosin-5a bound to F-actin
    • Complex: Actin, alpha skeletal muscle
    • Complex: Unconventional myosin-Va with calmodulin-1 bound
      • Complex: Calmodulin-1

-
Supramolecule #1: Myosin-5a bound to F-actin

SupramoleculeName: Myosin-5a bound to F-actin / type: complex / ID: 1 / Parent: 0
Molecular weightTheoretical: 20 KDa

-
Supramolecule #2: Actin, alpha skeletal muscle

SupramoleculeName: Actin, alpha skeletal muscle / type: complex / ID: 2 / Parent: 1
Source (natural)Organism: Oryctolagus cuniculus (rabbit) / Organ: skeletal muscle

-
Supramolecule #3: Unconventional myosin-Va with calmodulin-1 bound

SupramoleculeName: Unconventional myosin-Va with calmodulin-1 bound / type: complex / ID: 3 / Parent: 1
Source (natural)Organism: Mus musculus (house mouse)

-
Supramolecule #4: Calmodulin-1

SupramoleculeName: Calmodulin-1 / type: complex / ID: 4 / Parent: 3 / Details: 1 calmodulin bound per IQ domain (6 overall)

-
Experimental details

-
Structure determination

Methodcryo EM
Processingsingle particle reconstruction
Aggregation statehelical array

-
Sample preparation

BufferpH: 7
Component:
ConcentrationFormulaName
100.0 mMKClpotassium chloride
0.1 mMC14H24N2O10egtazic acid (EGTA)
1.0 mMMgCl2magnesium chloride
10.0 mMC7H15NO4S3-morpholinopropane-1-sulfonic acid (MOPS)
GridModel: Quantifoil R2/2 / Material: COPPER / Mesh: 300 / Support film - Material: CARBON / Support film - topology: HOLEY / Pretreatment - Type: GLOW DISCHARGE / Pretreatment - Time: 30 sec. / Pretreatment - Atmosphere: AMYLAMINE
VitrificationCryogen name: ETHANE / Chamber humidity: 80 % / Chamber temperature: 281.15 K / Instrument: FEI VITROBOT MARK IV
Details5.26 mg/mL Actin, alpha skeletal muscle 266 mg/mL FlAG-tagged unconventional myosin-Va (residues 1-907) 84.2 mg/mL Calmodulin-1

-
Electron microscopy

MicroscopeTFS KRIOS
Image recordingFilm or detector model: FEI FALCON III (4k x 4k) / Detector mode: INTEGRATING / Number grids imaged: 1 / Number real images: 4285 / Average exposure time: 1.5 sec. / Average electron dose: 63.13 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsC2 aperture diameter: 50.0 µm / Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Cs: 2.7 mm / Nominal defocus max: 3.6 µm / Nominal defocus min: 1.8 µm / Nominal magnification: 75000
Sample stageSpecimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Cooling holder cryogen: NITROGEN
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

+
Image processing

Particle selectionNumber selected: 838213
Startup modelType of model: OTHER / Details: relion_reconstruct map from particles in 3D class
Final reconstructionNumber classes used: 1 / Applied symmetry - Point group: C1 (asymmetric) / Algorithm: FOURIER SPACE / Resolution.type: BY AUTHOR / Resolution: 8.2 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: RELION (ver. 3.1) / Number images used: 20960
Initial angle assignmentType: MAXIMUM LIKELIHOOD / Software - Name: RELION (ver. 3.1)
Final angle assignmentType: MAXIMUM LIKELIHOOD / Software - Name: RELION (ver. 3.1)
Final 3D classificationNumber classes: 20 / Software - Name: RELION (ver. 3.1)
FSC plot (resolution estimation)

+
About Yorodumi

-
News

-
Feb 9, 2022. New format data for meta-information of EMDB entries

New format data for meta-information of EMDB entries

  • Version 3 of the EMDB header file is now the official format.
  • The previous official version 1.9 will be removed from the archive.

Related info.:EMDB header

External links:wwPDB to switch to version 3 of the EMDB data model

-
Aug 12, 2020. Covid-19 info

Covid-19 info

URL: https://pdbj.org/emnavi/covid19.php

New page: Covid-19 featured information page in EM Navigator.

Related info.:Covid-19 info / Mar 5, 2020. Novel coronavirus structure data

+
Mar 5, 2020. Novel coronavirus structure data

Novel coronavirus structure data

Related info.:Yorodumi Speices / Aug 12, 2020. Covid-19 info

External links:COVID-19 featured content - PDBj / Molecule of the Month (242)：Coronavirus Proteases

+
Jan 31, 2019. EMDB accession codes are about to change! (news from PDBe EMDB page)

EMDB accession codes are about to change! (news from PDBe EMDB page)

  • The allocation of 4 digits for EMDB accession codes will soon come to an end. Whilst these codes will remain in use, new EMDB accession codes will include an additional digit and will expand incrementally as the available range of codes is exhausted. The current 4-digit format prefixed with “EMD-” (i.e. EMD-XXXX) will advance to a 5-digit format (i.e. EMD-XXXXX), and so on. It is currently estimated that the 4-digit codes will be depleted around Spring 2019, at which point the 5-digit format will come into force.
  • The EM Navigator/Yorodumi systems omit the EMD- prefix.

Related info.:Q: What is EMD? / ID/Accession-code notation in Yorodumi/EM Navigator

External links:EMDB Accession Codes are Changing Soon! / Contact to PDBj

+
Jul 12, 2017. Major update of PDB

Major update of PDB

  • wwPDB released updated PDB data conforming to the new PDBx/mmCIF dictionary.
  • This is a major update changing the version number from 4 to 5, and with Remediation, in which all the entries are updated.
  • In this update, many items about electron microscopy experimental information are reorganized (e.g. em_software).
  • Now, EM Navigator and Yorodumi are based on the updated data.

External links:wwPDB Remediation / Enriched Model Files Conforming to OneDep Data Standards Now Available in the PDB FTP Archive

-
Yorodumi

Thousand views of thousand structures

  • Yorodumi is a browser for structure data from EMDB, PDB, SASBDB, etc.
  • This page is also the successor to EM Navigator detail page, and also detail information page/front-end page for Omokage search.
  • The word "yorodu" (or yorozu) is an old Japanese word meaning "ten thousand". "mi" (miru) is to see.

Related info.:EMDB / PDB / SASBDB / Comparison of 3 databanks / Yorodumi Search / Aug 31, 2016. New EM Navigator & Yorodumi / Yorodumi Papers / Jmol/JSmol / Function and homology information / Changes in new EM Navigator and Yorodumi

Read more