[English] 日本語
Yorodumi
- EMDB-2779: Electron microscopy of human BRCA2 tumour suppressor protein -

+
Open data


ID or keywords:

Loading...

-
Basic information

Entry
Database: EMDB / ID: EMD-2779
TitleElectron microscopy of human BRCA2 tumour suppressor protein
Map dataReconstruction of active full-length human BRCA2 dimer
Sample
  • Sample: Full-length human BRCA2 protein
  • Protein or peptide: Breast cancer type 2 susceptibility protein
Keywordstumour suppressor / DNA double-strand break repair / homologous recombination / negative stain
Function / homology
Function and homology information


BRCA2-MAGE-D1 complex / negative regulation of mammary gland epithelial cell proliferation / mitotic recombination-dependent replication fork processing / establishment of protein localization to telomere / Impaired BRCA2 translocation to the nucleus / Impaired BRCA2 binding to SEM1 (DSS1) / nuclear ubiquitin ligase complex / histone H3 acetyltransferase activity / histone H4 acetyltransferase activity / lateral element ...BRCA2-MAGE-D1 complex / negative regulation of mammary gland epithelial cell proliferation / mitotic recombination-dependent replication fork processing / establishment of protein localization to telomere / Impaired BRCA2 translocation to the nucleus / Impaired BRCA2 binding to SEM1 (DSS1) / nuclear ubiquitin ligase complex / histone H3 acetyltransferase activity / histone H4 acetyltransferase activity / lateral element / telomere maintenance via recombination / regulation of DNA damage checkpoint / HDR through MMEJ (alt-NHEJ) / oocyte maturation / Impaired BRCA2 binding to PALB2 / gamma-tubulin binding / DNA repair complex / Defective homologous recombination repair (HRR) due to BRCA1 loss of function / Defective HDR through Homologous Recombination Repair (HRR) due to PALB2 loss of BRCA1 binding function / Defective HDR through Homologous Recombination Repair (HRR) due to PALB2 loss of BRCA2/RAD51/RAD51C binding function / Homologous DNA Pairing and Strand Exchange / Resolution of D-loop Structures through Synthesis-Dependent Strand Annealing (SDSA) / response to UV-C / Resolution of D-loop Structures through Holliday Junction Intermediates / inner cell mass cell proliferation / DNA damage response, signal transduction by p53 class mediator resulting in transcription of p21 class mediator / hematopoietic stem cell proliferation / Impaired BRCA2 binding to RAD51 / female gonad development / male meiosis I / Presynaptic phase of homologous DNA pairing and strand exchange / centrosome duplication / response to X-ray / intrinsic apoptotic signaling pathway in response to DNA damage by p53 class mediator / positive regulation of mitotic cell cycle / regulation of cytokinesis / secretory granule / cellular response to ionizing radiation / nucleotide-excision repair / response to gamma radiation / double-strand break repair via homologous recombination / brain development / HDR through Homologous Recombination (HRR) / Meiotic recombination / double-strand break repair / cellular senescence / single-stranded DNA binding / spermatogenesis / protease binding / chromosome, telomeric region / centrosome / regulation of DNA-templated transcription / positive regulation of DNA-templated transcription / protein-containing complex / nucleoplasm / identical protein binding / nucleus / cytosol
Similarity search - Function
: / BRCA2, OB2 / BRCA2, OB3 / Tower domain / Breast cancer type 2 susceptibility protein, helical domain / BRCA2 helical domain superfamily / BRCA2, oligonucleotide/oligosaccharide-binding, domain 3 / Tower / BRCA2, helical / Tower ...: / BRCA2, OB2 / BRCA2, OB3 / Tower domain / Breast cancer type 2 susceptibility protein, helical domain / BRCA2 helical domain superfamily / BRCA2, oligonucleotide/oligosaccharide-binding, domain 3 / Tower / BRCA2, helical / Tower / Breast cancer type 2 susceptibility protein / BRCA2 repeat / BRCA2, OB1 / Breast cancer type 2 susceptibility protein / BRCA2 repeat / BRCA2, oligonucleotide/oligosaccharide-binding, domain 1 / BRCA2 repeat profile. / Nucleic acid-binding, OB-fold
Similarity search - Domain/homology
Breast cancer type 2 susceptibility protein
Similarity search - Component
Biological speciesHomo sapiens (human)
Methodsingle particle reconstruction / negative staining / Resolution: 18.5 Å
AuthorsShahid T / Soroka J / Kong EH / Malivert L / McIlwraith MJ / Pape T / West SC / Zhang X
CitationJournal: Nat Struct Mol Biol / Year: 2014
Title: Structure and mechanism of action of the BRCA2 breast cancer tumor suppressor.
Authors: Taha Shahid / Joanna Soroka / Eric Kong / Laurent Malivert / Michael J McIlwraith / Tillman Pape / Stephen C West / Xiaodong Zhang /
Abstract: Mutations in BRCA2 increase susceptibility to breast, ovarian and prostate cancers. The product of human BRCA2, BRCA2 protein, has a key role in the repair of DNA double-strand breaks and interstrand ...Mutations in BRCA2 increase susceptibility to breast, ovarian and prostate cancers. The product of human BRCA2, BRCA2 protein, has a key role in the repair of DNA double-strand breaks and interstrand cross-links by RAD51-mediated homologous recombination. Here, we present a biochemical and structural characterization of full-length (3,418 amino acid) BRCA2, alone and in complex with RAD51. We show that BRCA2 facilitates nucleation of RAD51 filaments at multiple sites on single-stranded DNA. Three-dimensional EM reconstructions revealed that BRCA2 exists as a dimer and that two oppositely oriented sets of RAD51 molecules bind the dimer. Single-stranded DNA binds along the long axis of BRCA2, such that only one set of RAD51 monomers can form a productive complex with DNA and establish filament formation. Our data define the molecular mechanism by which this tumor suppressor facilitates RAD51-mediated homologous-recombinational repair.
History
DepositionSep 3, 2014-
Header (metadata) releaseSep 17, 2014-
Map releaseOct 8, 2014-
UpdateOct 8, 2014-
Current statusOct 8, 2014Processing site: PDBe / Status: Released

-
Structure visualization

Movie
  • Surface view with section colored by density value
  • Surface level: 0.0921
  • Imaged by UCSF Chimera
  • Download
  • Surface view colored by radius
  • Surface level: 0.0921
  • Imaged by UCSF Chimera
  • Download
Movie viewer
Structure viewerEM map:
SurfViewMolmilJmol/JSmol
Supplemental images

emd_2779.png

emd_2779_1.png

Downloads & links

-
Map

FileDownload / File: emd_2779.map.gz / Format: CCP4 / Size: 7.8 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
AnnotationReconstruction of active full-length human BRCA2 dimer
Voxel sizeX=Y=Z: 3.52 Å
Density
Contour LevelBy AUTHOR: 0.0921 / Movie #1: 0.0921
Minimum - Maximum-0.22995593 - 0.58755279
Average (Standard dev.)0.00190962 (±0.02442834)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin-64-64-64
Dimensions128128128
Spacing128128128
CellA=B=C: 450.56 Å
α=β=γ: 90.0 °

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z3.523.523.52
M x/y/z128128128
origin x/y/z0.0000.0000.000
length x/y/z450.560450.560450.560
α/β/γ90.00090.00090.000
start NX/NY/NZ-40-32-96
NX/NY/NZ8165193
MAP C/R/S123
start NC/NR/NS-64-64-64
NC/NR/NS128128128
D min/max/mean-0.2300.5880.002

-
Supplemental data

-
Sample components

-
Entire : Full-length human BRCA2 protein

EntireName: Full-length human BRCA2 protein
Components
  • Sample: Full-length human BRCA2 protein
  • Protein or peptide: Breast cancer type 2 susceptibility protein

-
Supramolecule #1000: Full-length human BRCA2 protein

SupramoleculeName: Full-length human BRCA2 protein / type: sample / ID: 1000 / Details: The sample was very dilute, ~0.0025 mg/ml. / Oligomeric state: Homodimer / Number unique components: 1
Molecular weightExperimental: 800 KDa / Theoretical: 768 KDa / Method: Scanning transmission electron microscopy

-
Macromolecule #1: Breast cancer type 2 susceptibility protein

MacromoleculeName: Breast cancer type 2 susceptibility protein / type: protein_or_peptide / ID: 1 / Name.synonym: BRCA2 / Number of copies: 2 / Oligomeric state: Homodimer / Recombinant expression: Yes
Source (natural)Organism: Homo sapiens (human) / synonym: Human / Location in cell: Nucleus
Molecular weightTheoretical: 384 KDa
Recombinant expressionOrganism: Homo sapiens (human) / Recombinant cell: HeLa
SequenceUniProtKB: Breast cancer type 2 susceptibility protein / InterPro: Breast cancer type 2 susceptibility protein

-
Experimental details

-
Structure determination

Methodnegative staining
Processingsingle particle reconstruction
Aggregation stateparticle

-
Sample preparation

StainingType: NEGATIVE
Details: Grid with adsorbed protein was negatively stained with 2% uranyl acetate solution before being blotted and air dried.
GridDetails: TAAB copper 300-mesh continuous carbon grid, glow discharged in air.
VitrificationCryogen name: NONE / Instrument: OTHER

-
Electron microscopy #1

MicroscopeFEI/PHILIPS CM200FEG
Electron beamAcceleration voltage: 200 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: SPOT SCAN / Imaging mode: BRIGHT FIELDBright-field microscopy / Cs: 2.1 mm / Nominal defocus max: 3.0 µm / Nominal defocus min: 1.5 µm / Nominal magnification: 50000
Sample stageSpecimen holder model: SIDE ENTRY, EUCENTRIC
Microscopy ID1
DateMar 14, 2012
Image recordingCategory: CCD / Film or detector model: TVIPS TEMCAM-F415 (4k x 4k) / Average electron dose: 40 e/Å2 / Bits/pixel: 16

-
Electron microscopy #2

MicroscopeFEI/PHILIPS CM200FEG
Electron beamAcceleration voltage: 200 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: SPOT SCAN / Imaging mode: BRIGHT FIELDBright-field microscopy / Cs: 2.1 mm / Nominal defocus max: 3.0 µm / Nominal defocus min: 1.5 µm / Nominal magnification: 50000
Sample stageSpecimen holder model: SIDE ENTRY, EUCENTRIC
Microscopy ID2
DateMar 16, 2012
Image recordingCategory: CCD / Film or detector model: TVIPS TEMCAM-F415 (4k x 4k) / Average electron dose: 40 e/Å2 / Bits/pixel: 16

-
Electron microscopy #3

MicroscopeFEI/PHILIPS CM200FEG
Electron beamAcceleration voltage: 200 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: SPOT SCAN / Imaging mode: BRIGHT FIELDBright-field microscopy / Cs: 2.1 mm / Nominal defocus max: 3.0 µm / Nominal defocus min: 1.5 µm / Nominal magnification: 50000
Sample stageSpecimen holder model: SIDE ENTRY, EUCENTRIC
Microscopy ID3
DateMar 21, 2012
Image recordingCategory: CCD / Film or detector model: TVIPS TEMCAM-F415 (4k x 4k) / Average electron dose: 40 e/Å2 / Bits/pixel: 16

-
Electron microscopy #4

MicroscopeFEI/PHILIPS CM200FEG
Electron beamAcceleration voltage: 200 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: SPOT SCAN / Imaging mode: BRIGHT FIELDBright-field microscopy / Cs: 2.1 mm / Nominal defocus max: 3.0 µm / Nominal defocus min: 1.5 µm / Nominal magnification: 50000
Sample stageSpecimen holder model: SIDE ENTRY, EUCENTRIC
Microscopy ID4
DateMar 22, 2012
Image recordingCategory: CCD / Film or detector model: TVIPS TEMCAM-F415 (4k x 4k) / Average electron dose: 40 e/Å2 / Bits/pixel: 16

-
Image processing

Final two d classificationNumber classes: 568
Final angle assignmentDetails: IMAGIC: 0 < Beta < 180 degrees, -90 < Gamma < 90 degrees
Final reconstructionApplied symmetry - Point group: C2 (2 fold cyclic) / Algorithm: OTHER / Resolution.type: BY AUTHOR / Resolution: 18.5 Å / Resolution method: OTHER / Software - Name: IMAGIC-5, Tigris
Details: Final maps were calculated after a round of projection matching.
Number images used: 8873
DetailsThe particles were selected manually in EMAN2.
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