4WJA

Crystal Structure of PAXX


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.6 Å
  • R-Value Free: 0.267 
  • R-Value Work: 0.245 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

Interactome analysis identifies a new paralogue of XRCC4 in non-homologous end joining DNA repair pathway.

Xing, M.Yang, M.Huo, W.Feng, F.Wei, L.Jiang, W.Ning, S.Yan, Z.Li, W.Wang, Q.Hou, M.Dong, C.Guo, R.Gao, G.Ji, J.Zha, S.Lan, L.Liang, H.Xu, D.

(2015) Nat Commun 6: 6233-6233

  • DOI: 10.1038/ncomms7233

  • PubMed Abstract: 
  • Non-homologous end joining (NHEJ) is a major pathway to repair DNA double-strand breaks (DSBs), which can display different types of broken ends. However, it is unclear how NHEJ factors organize to repair diverse types of DNA breaks. Here, through sy ...

    Non-homologous end joining (NHEJ) is a major pathway to repair DNA double-strand breaks (DSBs), which can display different types of broken ends. However, it is unclear how NHEJ factors organize to repair diverse types of DNA breaks. Here, through systematic analysis of the human NHEJ factor interactome, we identify PAXX as a direct interactor of Ku. The crystal structure of PAXX is similar to those of XRCC4 and XLF. Importantly, PAXX-deficient cells are sensitive to DSB-causing agents. Moreover, epistasis analysis demonstrates that PAXX functions together with XLF in response to ionizing radiation-induced complex DSBs, whereas they function redundantly in response to Topo2 inhibitor-induced simple DSBs. Consistently, PAXX and XLF coordinately promote the ligation of complex but not simple DNA ends in vitro. Altogether, our data identify PAXX as a new NHEJ factor and provide insight regarding the organization of NHEJ factors responding to diverse types of DSB ends.


    Organizational Affiliation

    State Key Laboratory of Protein and Plant Gene Research, School of Life Sciences, Peking University, 5 Yiheyuan Road, Beijing 100871, China.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Uncharacterized protein C9orf142
A, B
161Homo 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: 2.6 Å
  • R-Value Free: 0.267 
  • R-Value Work: 0.245 
  • Space Group: P 65 2 2
Unit Cell:
Length (Å)Angle (°)
a = 91.825α = 90.00
b = 91.825β = 90.00
c = 152.468γ = 120.00
Software Package:
Software NamePurpose
PHENIXrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Basic Research Program of ChinaChina2013CB911002
National Natural Science Foundation of ChinaChina31271435
National Natural Science Foundation of ChinaChina31370836

Revision History 

  • Version 1.0: 2015-03-11
    Type: Initial release