3WTF

Structure of PAXX


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.451 Å
  • R-Value Free: 0.268 
  • R-Value Work: 0.235 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

DNA repair. PAXX, a paralog of XRCC4 and XLF, interacts with Ku to promote DNA double-strand break repair.

Ochi, T.Blackford, A.N.Coates, J.Jhujh, S.Mehmood, S.Tamura, N.Travers, J.Wu, Q.Draviam, V.M.Robinson, C.V.Blundell, T.L.Jackson, S.P.

(2015) Science 347: 185-188

  • DOI: 10.1126/science.1261971
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • XRCC4 and XLF are two structurally related proteins that function in DNA double-strand break (DSB) repair. Here, we identify human PAXX (PAralog of XRCC4 and XLF, also called C9orf142) as a new XRCC4 superfamily member and show that its crystal struc ...

    XRCC4 and XLF are two structurally related proteins that function in DNA double-strand break (DSB) repair. Here, we identify human PAXX (PAralog of XRCC4 and XLF, also called C9orf142) as a new XRCC4 superfamily member and show that its crystal structure resembles that of XRCC4. PAXX interacts directly with the DSB-repair protein Ku and is recruited to DNA-damage sites in cells. Using RNA interference and CRISPR-Cas9 to generate PAXX(-/-) cells, we demonstrate that PAXX functions with XRCC4 and XLF to mediate DSB repair and cell survival in response to DSB-inducing agents. Finally, we reveal that PAXX promotes Ku-dependent DNA ligation in vitro and assembly of core nonhomologous end-joining (NHEJ) factors on damaged chromatin in cells. These findings identify PAXX as a new component of the NHEJ machinery.


    Organizational Affiliation

    Physical and Theoretical Chemistry Laboratory, University of Oxford, South Parks Road, Oxford OX1 3QZ, UK.,Wellcome Trust Sanger Institute, Hinxton, Cambridge CB10 1SA, UK.,Department of Biochemistry, University of Cambridge, 80 Tennis Court Road, Cambridge CB2 1GA, UK.,Department of Genetics, University of Cambridge, Cambridge CB2 3EH, UK.,Wellcome Trust/Cancer Research UK Gurdon Institute, University of Cambridge, Tennis Court Road, Cambridge CB2 1QN, UK.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Uncharacterized protein C9orf142
A, B
206Homo sapiensMutation(s): 0 
Gene Names: PAXX (C9orf142, XLS)
Find proteins for Q9BUH6 (Homo sapiens)
Go to Gene View: PAXX
Go to UniProtKB:  Q9BUH6
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.451 Å
  • R-Value Free: 0.268 
  • R-Value Work: 0.235 
  • Space Group: P 65 2 2
Unit Cell:
Length (Å)Angle (°)
a = 89.576α = 90.00
b = 89.576β = 90.00
c = 151.404γ = 120.00
Software Package:
Software NamePurpose
PHASERphasing
GDAdata collection
PHENIXrefinement
Aimlessdata scaling
XDSdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2015-01-21
    Type: Initial release
  • Version 1.1: 2019-12-18
    Type: Database references