6ERF

Complex of APLF factor and Ku heterodimer bound to DNA


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.01 Å
  • R-Value Free: 0.227 
  • R-Value Work: 0.209 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

XLF and APLF bind Ku80 at two remote sites to ensure DNA repair by non-homologous end joining.

Nemoz, C.Ropars, V.Frit, P.Gontier, A.Drevet, P.Yu, J.Guerois, R.Pitois, A.Comte, A.Delteil, C.Barboule, N.Legrand, P.Baconnais, S.Yin, Y.Tadi, S.Barbet-Massin, E.Berger, I.Le Cam, E.Modesti, M.Rothenberg, E.Calsou, P.Charbonnier, J.B.

(2018) Nat. Struct. Mol. Biol. 25: 971-980

  • DOI: 10.1038/s41594-018-0133-6
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The Ku70-Ku80 (Ku) heterodimer binds rapidly and tightly to the ends of DNA double-strand breaks and recruits factors of the non-homologous end-joining (NHEJ) repair pathway through molecular interactions that remain unclear. We have determined cryst ...

    The Ku70-Ku80 (Ku) heterodimer binds rapidly and tightly to the ends of DNA double-strand breaks and recruits factors of the non-homologous end-joining (NHEJ) repair pathway through molecular interactions that remain unclear. We have determined crystal structures of the Ku-binding motifs (KBM) of the NHEJ proteins APLF (A-KBM) and XLF (X-KBM) bound to a Ku-DNA complex. The two KBM motifs bind remote sites of the Ku80 α/β domain. The X-KBM occupies an internal pocket formed by an unprecedented large outward rotation of the Ku80 α/β domain. We observe independent recruitment of the APLF-interacting protein XRCC4 and of XLF to laser-irradiated sites via binding of A- and X-KBMs, respectively, to Ku80. Finally, we show that mutation of the X-KBM and A-KBM binding sites in Ku80 compromises both the efficiency and accuracy of end joining and cellular radiosensitivity. A- and X-KBMs may represent two initial anchor points to build the intricate interaction network required for NHEJ.


    Organizational Affiliation

    Institute for Integrative Biology of the Cell, Institute Joliot, CEA, CNRS, Université Paris-Sud, Université Paris-Saclay, Gif-sur-Yvette, France.




Macromolecules

Find similar proteins by: Sequence  |  Structure


Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
X-ray repair cross-complementing protein 6
A, C, E, G
544Homo sapiensMutation(s): 0 
Gene Names: XRCC6 (G22P1)
EC: 3.6.4.-, 4.2.99.-
Find proteins for P12956 (Homo sapiens)
Go to Gene View: XRCC6
Go to UniProtKB:  P12956
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
X-ray repair cross-complementing protein 5
B, D, F, H
572Homo sapiensMutation(s): 0 
Gene Names: XRCC5 (G22P2)
EC: 3.6.4.-
Find proteins for P13010 (Homo sapiens)
Go to Gene View: XRCC5
Go to UniProtKB:  P13010
Entity ID: 5
MoleculeChainsSequence LengthOrganismDetails
Aprataxin and PNK-like factor
Q, R, S, T
18Homo sapiensMutation(s): 0 
Gene Names: APLF (C2orf13, PALF, XIP1)
EC: 4.2.99.18
Find proteins for Q8IW19 (Homo sapiens)
Go to Gene View: APLF
Go to UniProtKB:  Q8IW19
Entity ID: 3
MoleculeChainsLengthOrganism
DNA (5'-D(*GP*TP*TP*TP*TP*TP*AP*GP*TP*TP*TP*AP*TP*TP*GP*GP*GP*CP*GP*CP*G)-3')I,K,M,O21synthetic construct
Entity ID: 4
MoleculeChainsLengthOrganism
DNA (34-MER)J,L,N,P34synthetic construct
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.01 Å
  • R-Value Free: 0.227 
  • R-Value Work: 0.209 
  • Space Group: P 1
Unit Cell:
Length (Å)Angle (°)
a = 98.920α = 68.64
b = 140.860β = 80.85
c = 150.310γ = 81.23
Software Package:
Software NamePurpose
XDSdata scaling
STARANISOdata reduction
MOLREPphasing
BUSTERrefinement
XDSdata reduction
PDB_EXTRACTdata extraction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
INCAFrancePLBIO 2012-280
French National Research AgencyFranceANR-12-SVSE8-012
ARCFranceSLS220120605310

Revision History 

  • Version 1.0: 2018-10-17
    Type: Initial release