4M6W

Crystal structure of the C-terminal segment of FANCM in complex with FAAP24


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.9 Å
  • R-Value Free: 0.299 
  • R-Value Work: 0.254 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structural insights into the functions of the FANCM-FAAP24 complex in DNA repair.

Yang, H.Zhang, T.Tao, Y.Wang, F.Tong, L.Ding, J.

(2013) Nucleic Acids Res. 41: 10573-10583

  • DOI: 10.1093/nar/gkt788

  • PubMed Abstract: 
  • Fanconi anemia (FA) is a genetically heterogeneous disorder associated with deficiencies in the FA complementation group network. FA complementation group M (FANCM) and FA-associated protein 24 kDa (FAAP24) form a stable complex to anchor the FA core ...

    Fanconi anemia (FA) is a genetically heterogeneous disorder associated with deficiencies in the FA complementation group network. FA complementation group M (FANCM) and FA-associated protein 24 kDa (FAAP24) form a stable complex to anchor the FA core complex to chromatin in repairing DNA interstrand crosslinks. Here, we report the first crystal structure of the C-terminal segment of FANCM in complex with FAAP24. The C-terminal segment of FANCM and FAAP24 both consist of a nuclease domain at the N-terminus and a tandem helix-hairpin-helix (HhH)2 domain at the C-terminus. The FANCM-FAAP24 complex exhibits a similar architecture as that of ApXPF. However, the variations of several key residues and the electrostatic property at the active-site region render a catalytically inactive nuclease domain of FANCM, accounting for the lack of nuclease activity. We also show that the first HhH motif of FAAP24 is a potential binding site for DNA, which plays a critical role in targeting FANCM-FAAP24 to chromatin. These results reveal the mechanistic insights into the functions of FANCM-FAAP24 in DNA repair.


    Organizational Affiliation

    State Key Laboratory of Molecular Biology, Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, 320 Yue-Yang Road, Shanghai 200031, China, Graduate School of Chinese Academy of Sciences, 320 Yue-Yang Road, Shanghai 200031, China and Department of Biological Sciences, Columbia University, New York, NY 10027, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Fanconi anemia group M protein
A
221Homo sapiensMutation(s): 0 
Gene Names: FANCM (KIAA1596)
EC: 3.6.4.13
Find proteins for Q8IYD8 (Homo sapiens)
Go to Gene View: FANCM
Go to UniProtKB:  Q8IYD8
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Fanconi anemia-associated protein of 24 kDa
B
208Homo sapiensMutation(s): 0 
Gene Names: FAAP24 (C19orf40)
Find proteins for Q9BTP7 (Homo sapiens)
Go to Gene View: FAAP24
Go to UniProtKB:  Q9BTP7
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download SDF File 
Download CCD File 
A, B
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.9 Å
  • R-Value Free: 0.299 
  • R-Value Work: 0.254 
  • Space Group: I 2 2 2
Unit Cell:
Length (Å)Angle (°)
a = 79.174α = 90.00
b = 98.111β = 90.00
c = 140.156γ = 90.00
Software Package:
Software NamePurpose
HKL-2000data collection
HKL-2000data scaling
REFMACrefinement
PDB_EXTRACTdata extraction
HKL-2000data reduction
AutoSolphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-10-02
    Type: Initial release
  • Version 1.1: 2015-06-17
    Type: Database references