[English] 日本語
Yorodumi
- EMDB-44310: Swc3-Swc2 subcomplex from SWR1-nucleosome complex (focused refinement) -

+
Open data


ID or keywords:

Loading...

-
Basic information

Entry
Database: EMDB / ID: EMD-44310
TitleSwc3-Swc2 subcomplex from SWR1-nucleosome complex (focused refinement)
Map data
Sample
  • Complex: Native SWR1 bound to nucleosome
    • Complex: Native SWR1 complex
KeywordsChromatin Remodeler / Snf2 family ATPase / histone exchange / H2A.Z / GENE REGULATION
Biological speciesSaccharomyces cerevisiae (brewer's yeast)
Methodsingle particle reconstruction / cryo EM / Resolution: 7.3 Å
AuthorsLouder RK / Park G / Wu C
Funding support United States, 3 items
OrganizationGrant numberCountry
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)R35GM149291 United States
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)R01GM125831 United States
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)F32GM133151 United States
CitationJournal: Cell / Year: 2024
Title: Molecular basis of global promoter sensing and nucleosome capture by the SWR1 chromatin remodeler.
Authors: Robert K Louder / Giho Park / Ziyang Ye / Justin S Cha / Anne M Gardner / Qin Lei / Anand Ranjan / Eva Höllmüller / Florian Stengel / B Franklin Pugh / Carl Wu /
Abstract: The SWR1 chromatin remodeling complex is recruited to +1 nucleosomes downstream of transcription start sites of eukaryotic promoters, where it exchanges histone H2A for the specialized variant H2A.Z. ...The SWR1 chromatin remodeling complex is recruited to +1 nucleosomes downstream of transcription start sites of eukaryotic promoters, where it exchanges histone H2A for the specialized variant H2A.Z. Here, we use cryoelectron microscopy (cryo-EM) to resolve the structural basis of the SWR1 interaction with free DNA, revealing a distinct open conformation of the Swr1 ATPase that enables sliding from accessible DNA to nucleosomes. A complete structural model of the SWR1-nucleosome complex illustrates critical roles for Swc2 and Swc3 subunits in oriented nucleosome engagement by SWR1. Moreover, an extended DNA-binding α helix within the Swc3 subunit enables sensing of nucleosome linker length and is essential for SWR1-promoter-specific recruitment and activity. The previously unresolved N-SWR1 subcomplex forms a flexible extended structure, enabling multivalent recognition of acetylated histone tails by reader domains to further direct SWR1 toward the +1 nucleosome. Altogether, our findings provide a generalizable mechanism for promoter-specific targeting of chromatin and transcription complexes.
History
DepositionMar 27, 2024-
Header (metadata) releaseOct 9, 2024-
Map releaseOct 9, 2024-
UpdateOct 16, 2024-
Current statusOct 16, 2024Processing site: RCSB / Status: Released

-
Structure visualization

Supplemental images

emd_44310.png

Downloads & links

-
Map

FileDownload / File: emd_44310.map.gz / Format: CCP4 / Size: 216 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
1.03 Å/pix.
x 384 pix.
= 395.52 Å		1.03 Å/pix.
x 384 pix.
= 395.52 Å		1.03 Å/pix.
x 384 pix.
= 395.52 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 1.03 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.1
Minimum - Maximum-0.0017689263 - 2.2173414
Average (Standard dev.)0.00026763746 (±0.012552788)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions384384384
Spacing384384384
CellA=B=C: 395.52 Å
α=β=γ: 90.0 °

-
Supplemental data

-
Mask #1

Fileemd_44310_msk_1.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

-
Half map: #1

Fileemd_44310_half_map_1.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

-
Half map: #2

Fileemd_44310_half_map_2.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

-
Sample components

-
Entire : Native SWR1 bound to nucleosome

EntireName: Native SWR1 bound to nucleosome
Components
  • Complex: Native SWR1 bound to nucleosome
    • Complex: Native SWR1 complex

-
Supramolecule #1: Native SWR1 bound to nucleosome

SupramoleculeName: Native SWR1 bound to nucleosome / type: complex / ID: 1 / Parent: 0
Details: Endogenously purified yeast SWR1 complex bound to 60-N-7 nucleosome fragment in the presence of ADP-BeF3.
Source (natural)Organism: Saccharomyces cerevisiae (brewer's yeast) / Strain: W303
Molecular weightTheoretical: 1.19 MDa

-
Supramolecule #2: Native SWR1 complex

SupramoleculeName: Native SWR1 complex / type: complex / ID: 2 / Parent: 1 / Details: Endogenously purified yeast SWR1 complex
Source (natural)Organism: Saccharomyces cerevisiae (brewer's yeast) / Strain: W303

-
Experimental details

-
Structure determination

Methodcryo EM
Processingsingle particle reconstruction
Aggregation stateparticle

-
Sample preparation

Concentration0.08 mg/mL
BufferpH: 7.6
Details: 80 nM SWR1, 160 nM nucleosomes, 1 mM ADP, 10 mM NaF, 8 mM BeCl2, 0.05% glutaraldehyde, 20 mM HEPES-KOH pH 7.6, 1.5 mM MgCl2, 0.25 mM TCEP, 0.01% IGEPAL CA-630, 1% glycerol
GridModel: Quantifoil / Material: COPPER / Mesh: 400 / Support film - Material: CARBON / Support film - topology: CONTINUOUS / Pretreatment - Type: PLASMA CLEANING / Pretreatment - Time: 90 sec. / Pretreatment - Atmosphere: AIR
VitrificationCryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 277 K / Instrument: FEI VITROBOT MARK IV / Details: 3 second blot time and blot force of 10..

-
Electron microscopy

MicroscopeFEI TITAN KRIOS
Image recordingFilm or detector model: GATAN K3 (6k x 4k) / Number grids imaged: 1 / Number real images: 7260 / Average exposure time: 4.0 sec. / Average electron dose: 54.0 e/Å2
Details: Each micrograph was fractionated into 64 frames within a 4 second exposure.
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsC2 aperture diameter: 70.0 µm / Calibrated magnification: 48543 / Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Cs: 2.7 mm / Nominal defocus max: 3.6 µm / Nominal defocus min: 2.0 µm
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: 525782
Startup modelType of model: EMDB MAP
EMDB ID:

4395

Final reconstructionNumber classes used: 1 / Applied symmetry - Point group: C1 (asymmetric) / Algorithm: FOURIER SPACE / Resolution.type: BY AUTHOR / Resolution: 7.3 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: RELION / Number images used: 13153
Initial angle assignmentType: MAXIMUM LIKELIHOOD / Software - Name: RELION
Final angle assignmentType: MAXIMUM LIKELIHOOD / Software - Name: RELION
Final 3D classificationSoftware - Name: RELION
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