7BDX

Armadillo domain of HSF2BP in complex with BRCA2 peptide

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.60 Å
  • R-Value Free: 0.241 
  • R-Value Work: 0.198 
  • R-Value Observed: 0.200 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history. 


Literature

BRCA2 binding through a cryptic repeated motif to HSF2BP oligomers does not impact meiotic recombination.

Ghouil, R., Miron, S., Koornneef, L., Veerman, J., Paul, M.W., Le Du, M.H., Sleddens-Linkels, E., van Rossum-Fikkert, S.E., van Loon, Y., Felipe-Medina, N., Pendas, A.M., Maas, A., Essers, J., Legrand, P., Baarends, W.M., Kanaar, R., Zinn-Justin, S., Zelensky, A.N.

(2021) Nat Commun 12: 4605-4605

  • DOI: https://doi.org/10.1038/s41467-021-24871-6
  • Primary Citation of Related Structures:  
    7BDX

  • PubMed Abstract: 

    • BRCA2 and its interactors are required for meiotic homologous recombination (HR) and fertility. Loss of HSF2BP, a BRCA2 interactor, disrupts HR during spermatogenesis. We test the model postulating that HSF2BP localizes BRCA2 to meiotic HR sites, by solving the crystal structure of the BRCA2 fragment in complex with dimeric armadillo domain (ARM) of HSF2BP and disrupting this interaction in a mouse model ...

    BRCA2 and its interactors are required for meiotic homologous recombination (HR) and fertility. Loss of HSF2BP, a BRCA2 interactor, disrupts HR during spermatogenesis. We test the model postulating that HSF2BP localizes BRCA2 to meiotic HR sites, by solving the crystal structure of the BRCA2 fragment in complex with dimeric armadillo domain (ARM) of HSF2BP and disrupting this interaction in a mouse model. This reveals a repeated 23 amino acid motif in BRCA2, each binding the same conserved surface of one ARM domain. In the complex, two BRCA2 fragments hold together two ARM dimers, through a large interface responsible for the nanomolar affinity - the strongest interaction involving BRCA2 measured so far. Deleting exon 12, encoding the first repeat, from mBrca2 disrupts BRCA2 binding to HSF2BP, but does not phenocopy HSF2BP loss. Thus, results herein suggest that the high-affinity oligomerization-inducing BRCA2-HSF2BP interaction is not required for RAD51 and DMC1 recombinase localization in meiotic HR.

    Organizational Affiliation: 

    Department of Molecular Genetics, Oncode Institute, Erasmus MC Cancer Institute, Erasmus University Medical Center, 3000 CA, Rotterdam, The Netherlands. a.zelensky@erasmusmc.nl.



Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Heat shock factor 2-binding proteinA, B, C, D214Homo sapiensMutation(s): 0 
Gene Names: HSF2BP, MEILB2
UniProt & NIH Common Fund Data Resources
Find proteins for O75031 (Homo sapiens)
Explore O75031 
Go to UniProtKB:  O75031
PHAROS:  O75031
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupO75031
Protein Feature View
Expand
  • Reference Sequence
Find similar proteins by: 
(by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Breast cancer type 2 susceptibility proteinE, F59Homo sapiensMutation(s): 0 
Gene Names: BRCA2, FACD, FANCD1
UniProt & NIH Common Fund Data Resources
Find proteins for P51587 (Homo sapiens)
Explore P51587 
Go to UniProtKB:  P51587
PHAROS:  P51587
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP51587
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
MG
Query on MG
Download Ideal Coordinates CCD File 
G [auth A],
H [auth B]		MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N		 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE		A, B, C, D L-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.60 Å
  • R-Value Free: 0.241 
  • R-Value Work: 0.198 
  • R-Value Observed: 0.200 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 52.887α = 90
b = 135.83β = 110.38
c = 75.794γ = 90
Software Package:
Software NamePurpose
BUSTERrefinement
PDB_EXTRACTdata extraction
XDSdata reduction
XSCALEdata scaling
MOLREPphasing

Structure Validation

View Full Validation Report



View more in-depth experimental data
Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2021-07-07
    Type: Initial release
  • Version 1.1: 2021-07-28
    Changes: Structure summary
  • Version 1.2: 2022-07-20
    Changes: Advisory, Database references