[English] 日本語
Yorodumi
- EMDB-14035: Structure of the EIAV CA-SP hexamer (C6), acquired on Krios4, Sel... -

+
Open data


ID or keywords:

Loading...

-
Basic information

Entry
Database: EMDB / ID: EMD-14035
TitleStructure of the EIAV CA-SP hexamer (C6), acquired on Krios4, Selectris/Falcon4, processed with AV3
Map dataEIAV CA hexamer, C6 symmetrized sharpened map
Sample
  • Virus: Equine infectious anemia virus
    • Protein or peptide: EIAV CASPNC
KeywordsRetrovirus / Equine infectious anemia virus / capsid protein / VIRAL PROTEIN
Function / homology
Function and homology information


viral budding via host ESCRT complex / viral nucleocapsid / structural constituent of virion / nucleic acid binding / zinc ion binding
Similarity search - Function
Gag protein p15 / Gag protein p15 / : / Matrix protein, lentiviral and alpha-retroviral, N-terminal / Retroviral nucleocapsid Gag protein p24, C-terminal domain / Gag protein p24 C-terminal domain / Retrovirus capsid, C-terminal / Retroviral matrix protein / Retrovirus capsid, N-terminal / zinc finger ...Gag protein p15 / Gag protein p15 / : / Matrix protein, lentiviral and alpha-retroviral, N-terminal / Retroviral nucleocapsid Gag protein p24, C-terminal domain / Gag protein p24 C-terminal domain / Retrovirus capsid, C-terminal / Retroviral matrix protein / Retrovirus capsid, N-terminal / zinc finger / Zinc knuckle / Zinc finger, CCHC-type superfamily / Zinc finger, CCHC-type / Zinc finger CCHC-type profile.
Similarity search - Domain/homology
Biological speciesEscherichia coli (E. coli) / Equine infectious anemia virus
Methodsubtomogram averaging / cryo EM / Resolution: 3.4 Å
AuthorsObr M / Hagen WJH / Dick RA / Yu L / Kotecha A / Schur FKM
Funding support Austria, United States, 2 items
OrganizationGrant numberCountry
Austrian Science FundP31445 Austria
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)R01AI147890 United States
CitationJournal: J Struct Biol / Year: 2022
Title: Exploring high-resolution cryo-ET and subtomogram averaging capabilities of contemporary DEDs.
Authors: Martin Obr / Wim J H Hagen / Robert A Dick / Lingbo Yu / Abhay Kotecha / Florian K M Schur /
Abstract: The potential of energy filtering and direct electron detection for cryo-electron microscopy (cryo-EM) has been well documented. Here, we assess the performance of recently introduced hardware for ...The potential of energy filtering and direct electron detection for cryo-electron microscopy (cryo-EM) has been well documented. Here, we assess the performance of recently introduced hardware for cryo-electron tomography (cryo-ET) and subtomogram averaging (STA), an increasingly popular structural determination method for complex 3D specimens. We acquired cryo-ET datasets of EIAV virus-like particles (VLPs) on two contemporary cryo-EM systems equipped with different energy filters and direct electron detectors (DED), specifically a Krios G4, equipped with a cold field emission gun (CFEG), Thermo Fisher Scientific Selectris X energy filter, and a Falcon 4 DED; and a Krios G3i, with a Schottky field emission gun (XFEG), a Gatan Bioquantum energy filter, and a K3 DED. We performed constrained cross-correlation-based STA on equally sized datasets acquired on the respective systems. The resulting EIAV CA hexamer reconstructions show that both systems perform comparably in the 4-6 Å resolution range based on Fourier-Shell correlation (FSC). In addition, by employing a recently introduced multiparticle refinement approach, we obtained a reconstruction of the EIAV CA hexamer at 2.9 Å. Our results demonstrate the potential of the new generation of energy filters and DEDs for STA, and the effects of using different processing pipelines on their STA outcomes.
History
DepositionDec 17, 2021-
Header (metadata) releaseJan 19, 2022-
Map releaseJan 19, 2022-
UpdateDec 13, 2023-
Current statusDec 13, 2023Processing site: PDBe / Status: Released

-
Structure visualization

Movie
  • Surface view with section colored by density value
  • Surface level: 0.88
  • Imaged by UCSF Chimera
  • Download
  • Surface view colored by height
  • Surface level: 0.88
  • Imaged by UCSF Chimera
  • Download
Movie viewer
Structure viewerEM map:
SurfViewMolmilJmol/JSmol
Supplemental images

emd_14035.png

Downloads & links

-
Map

FileDownload / File: emd_14035.map.gz / Format: CCP4 / Size: 42.9 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
AnnotationEIAV CA hexamer, C6 symmetrized sharpened map
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
1.18 Å/pix.
x 224 pix.
= 264.096 Å		1.18 Å/pix.
x 224 pix.
= 264.096 Å		1.18 Å/pix.
x 224 pix.
= 264.096 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 1.179 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.88 / Movie #1: 0.88
Minimum - Maximum-2.6740952 - 3.7783206
Average (Standard dev.)0.0016122494 (±0.213413)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions224224224
Spacing224224224
CellA=B=C: 264.096 Å
α=β=γ: 90.0 °

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z1.1791.1791.179
M x/y/z224224224
origin x/y/z0.0000.0000.000
length x/y/z264.096264.096264.096
α/β/γ90.00090.00090.000
start NX/NY/NZ000
NX/NY/NZ400400400
MAP C/R/S123
start NC/NR/NS000
NC/NR/NS224224224
D min/max/mean-2.6743.7780.002

-
Supplemental data

-
Mask #1

Fileemd_14035_msk_1.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

-
Half map: EIAV CA hexamer, C6 symmetrized half map 2

Fileemd_14035_half_map_1.map
AnnotationEIAV CA hexamer, C6 symmetrized half map 2
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

-
Half map: EIAV CA hexamer, C6 symmetrized half map 1

Fileemd_14035_half_map_2.map
AnnotationEIAV CA hexamer, C6 symmetrized half map 1
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

-
Sample components

-
Entire : Equine infectious anemia virus

EntireName: Equine infectious anemia virus
Components
  • Virus: Equine infectious anemia virus
    • Protein or peptide: EIAV CASPNC

-
Supramolecule #1: Equine infectious anemia virus

SupramoleculeName: Equine infectious anemia virus / type: virus / ID: 1 / Parent: 0 / Macromolecule list: all / NCBI-ID: 11665 / Sci species name: Equine infectious anemia virus / Virus type: VIRUS-LIKE PARTICLE / Virus isolate: OTHER / Virus enveloped: No / Virus empty: Yes
Host (natural)Organism: Equus caballus (horse)
Virus shellShell ID: 1 / Name: Immature capsid

-
Macromolecule #1: EIAV CASPNC

MacromoleculeName: EIAV CASPNC / type: protein_or_peptide / ID: 1 / Enantiomer: LEVO
Source (natural)Organism: Escherichia coli (E. coli)
Recombinant expressionOrganism: Equine infectious anemia virus
SequenceString: SPIMIDGAGN RNFRPLTPRG YTTWVNTIQT NGLLNEASQN LFGILSVDCT SEEMNAFLDV V PGQAGQKQ ILLDAIDKIA DDWDNRHPLP NAPLVAPPQG PIPMTARFIR GLGVPRERQM EP AFDQFRQ TYRQWIIEAM SEGIKVMIGK PKAQNIRQGA KEPYPEFVDR ...String:
SPIMIDGAGN RNFRPLTPRG YTTWVNTIQT NGLLNEASQN LFGILSVDCT SEEMNAFLDV V PGQAGQKQ ILLDAIDKIA DDWDNRHPLP NAPLVAPPQG PIPMTARFIR GLGVPRERQM EP AFDQFRQ TYRQWIIEAM SEGIKVMIGK PKAQNIRQGA KEPYPEFVDR LLSQIKSEGH PQE ISKFLT DTLTIQNANE ECRNAMRHLR PEDTLEEKMY ACRDIGTTKQ KMML LAKAL QTGLAGPFK GGALKGGPLK AAQTCYNCGK PGHLSSQCRA PKVCFKCKQP GHFSKQCRSV P KNGKQGAQ GRPQKQTF

-
Experimental details

-
Structure determination

Methodcryo EM
Processingsubtomogram averaging
Aggregation stateparticle

-
Sample preparation

BufferpH: 6.2
Component:
ConcentrationFormulaName
20.0 mMMES2-(N-morpholino)ethanesulfonic acid
100.0 mMNaClsodium chloride
2.0 mMTCEPtris(2-carboxyethyl)phosphine
10.0 microMIP6inositol hexakisphosphate
GridModel: C-flat-2/2 / Material: COPPER / Mesh: 200 / Support film - Material: CARBON / Support film - topology: HOLEY / Pretreatment - Type: GLOW DISCHARGE / Pretreatment - Time: 120 sec. / Pretreatment - Atmosphere: AIR
VitrificationCryogen name: ETHANE / Chamber humidity: 95 % / Chamber temperature: 283 K / Instrument: LEICA EM GP
Details: 3.5 seconds blotting time, using back-side blotting.

-
Electron microscopy

MicroscopeTFS KRIOS
Specialist opticsEnergy filter - Name: TFS Selectris X / Energy filter - Slit width: 10 eV
Image recordingFilm or detector model: FEI FALCON IV (4k x 4k) / Digitization - Dimensions - Width: 4096 pixel / Digitization - Dimensions - Height: 4096 pixel / Number grids imaged: 1 / Average exposure time: 1.02 sec. / Average electron dose: 3.5 e/Å2 / Details: Images acquired in the EER format.
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: 3.25 µm / Nominal defocus min: 0.75 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

Final reconstructionApplied symmetry - Point group: C6 (6 fold cyclic) / Algorithm: BACK PROJECTION / Resolution.type: BY AUTHOR / Resolution: 3.4 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: subTOM / Number subtomograms used: 62282
ExtractionNumber tomograms: 85 / Number images used: 120936 / Software: (Name: IMOD (ver. 4.9), MATLAB (ver. R2018b))
Final 3D classificationSoftware - Name: MATLAB (ver. R2018b)
Final angle assignmentType: OTHER / Software - Name: subTOM
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