RAD51C N-terminal domain

Experimental Data Snapshot

  • Resolution: 1.60 Å
  • R-Value Free: 0.193 
  • R-Value Work: 0.154 
  • R-Value Observed: 0.156 

wwPDB Validation   3D Report Full Report

This is version 1.0 of the entry. See complete history


RAD51C-XRCC3 structure and cancer patient mutations define DNA replication roles.

Longo, M.A.Roy, S.Chen, Y.Tomaszowski, K.H.Arvai, A.S.Pepper, J.T.Boisvert, R.A.Kunnimalaiyaan, S.Keshvani, C.Schild, D.Bacolla, A.Williams, G.J.Tainer, J.A.Schlacher, K.

(2023) Nat Commun 14: 4445-4445

  • DOI: https://doi.org/10.1038/s41467-023-40096-1
  • Primary Citation of Related Structures:  
    8GJ8, 8GJ9, 8GJA

  • PubMed Abstract: 

    RAD51C is an enigmatic predisposition gene for breast, ovarian, and prostate cancer. Currently, missing structural and related functional understanding limits patient mutation interpretation to homology-directed repair (HDR) function analysis. Here we report the RAD51C-XRCC3 (CX3) X-ray co-crystal structure with bound ATP analog and define separable RAD51C replication stability roles informed by its three-dimensional structure, assembly, and unappreciated polymerization motif. Mapping of cancer patient mutations as a functional guide confirms ATP-binding matching RAD51 recombinase, yet highlights distinct CX3 interfaces. Analyses of CRISPR/Cas9-edited human cells with RAD51C mutations combined with single-molecule, single-cell and biophysics measurements uncover discrete CX3 regions for DNA replication fork protection, restart and reversal, accomplished by separable functions in DNA binding and implied 5' RAD51 filament capping. Collective findings establish CX3 as a cancer-relevant replication stress response complex, show how HDR-proficient variants could contribute to tumor development, and identify regions to aid functional testing and classification of cancer mutations.

  • Organizational Affiliation

    Department of Molecular & Cellular Oncology, UT MD Anderson Cancer Center, Houston, TX, USA.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
A, B
65Alvinella pompejanaMutation(s): 0 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
Sequence Annotations
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
Query on ZN

Download Ideal Coordinates CCD File 
C [auth A]ZINC ION
Experimental Data & Validation

Experimental Data

  • Resolution: 1.60 Å
  • R-Value Free: 0.193 
  • R-Value Work: 0.154 
  • R-Value Observed: 0.156 
  • Space Group: P 32 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 45.607α = 90
b = 45.607β = 90
c = 111.412γ = 120
Software Package:
Software NamePurpose
HKL-2000data reduction
SCALEPACKdata scaling

Structure Validation

View Full Validation Report

Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
National Institutes of Health/National Cancer Institute (NIH/NCI)United StatesR35CA220430
National Institutes of Health/National Cancer Institute (NIH/NCI)United StatesP01 CA092584

Revision History  (Full details and data files)

  • Version 1.0: 2023-08-16
    Type: Initial release