6LHS

High resolution structure of FANCA C-terminal domain (CTD)


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.35 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Structural basis of the fanconi anemia-associated mutations within the FANCA and FANCG complex.

Jeong, E.Lee, S.G.Kim, H.S.Yang, J.Shin, J.Kim, Y.Kim, J.Scharer, O.D.Kim, Y.Yeo, J.E.Kim, H.M.Cho, Y.

(2020) Nucleic Acids Res 48: 3328-3342

  • DOI: 10.1093/nar/gkaa062
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • Monoubiquitination of the Fanconi anemia complementation group D2 (FANCD2) protein by the FA core ubiquitin ligase complex is the central event in the FA pathway. FANCA and FANCG play major roles in the nuclear localization of the FA core complex. Mu ...

    Monoubiquitination of the Fanconi anemia complementation group D2 (FANCD2) protein by the FA core ubiquitin ligase complex is the central event in the FA pathway. FANCA and FANCG play major roles in the nuclear localization of the FA core complex. Mutations of these two genes are the most frequently observed genetic alterations in FA patients, and most point mutations in FANCA are clustered in the C-terminal domain (CTD). To understand the basis of the FA-associated FANCA mutations, we determined the cryo-electron microscopy (EM) structures of Xenopus laevis FANCA alone at 3.35 Å and 3.46 Å resolution and two distinct FANCA-FANCG complexes at 4.59 and 4.84 Å resolution, respectively. The FANCA CTD adopts an arc-shaped solenoid structure that forms a pseudo-symmetric dimer through its outer surface. FA- and cancer-associated point mutations are widely distributed over the CTD. The two different complex structures capture independent interactions of FANCG with either FANCA C-terminal HEAT repeats, or the N-terminal region. We show that mutations that disturb either of these two interactions prevent the nuclear localization of FANCA, thereby leading to an FA pathway defect. The structure provides insights into the function of FANCA CTD, and provides a framework for understanding FA- and cancer-associated mutations.


    Organizational Affiliation

    Department of Life Science, Pohang University of Science and Technology, Pohang, 37673, Republic of Korea.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Fanconi anemia complementation group A
A, B
1437Xenopus laevisMutation(s): 0 
Gene Names: FANCAfanca
Find proteins for Q4VT51 (Xenopus laevis)
Go to UniProtKB:  Q4VT51
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.35 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Research Foundation (NRF, Korea)Korea, Republic Of2018R1A2A1A19021035
National Research Foundation (NRF, Korea)Korea, Republic Of2017M3A9F6029733

Revision History 

  • Version 1.0: 2020-03-25
    Type: Initial release
  • Version 1.1: 2020-04-08
    Changes: Database references