2M9N

Solution Structure of (HhH)2 domain of human FAAP24


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 10 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Structure analysis of FAAP24 reveals single-stranded DNA-binding activity and domain functions in DNA damage response.

Wang, Y.Han, X.Wu, F.Leung, J.W.Lowery, M.G.Do, H.Chen, J.Shi, C.Tian, C.Li, L.Gong, W.

(2013) Cell Res 23: 1215-1228

  • DOI: https://doi.org/10.1038/cr.2013.124
  • Primary Citation of Related Structures:  
    2M9M, 2M9N

  • PubMed Abstract: 

    The FANCM/FAAP24 heterodimer has distinct functions in protecting cells from complex DNA lesions such as interstrand crosslinks. These functions rely on the biochemical activity of FANCM/FAAP24 to recognize and bind to damaged DNA or stalled replication forks. However, the DNA-binding activity of this complex was not clearly defined. We investigated how FAAP24 contributes to the DNA-interacting functions of the FANCM/FAAP24 complex by acquiring the N-terminal and C-terminal solution structures of human FAAP24. Modeling of the FAAP24 structure indicates that FAAP24 may possess a high affinity toward single-stranded DNA (ssDNA). Testing of various FAAP24 mutations in vitro and in vivo validated this prediction derived from structural analyses. We found that the DNA-binding and FANCM-interacting functions of FAAP24, although both require the C-terminal (HhH)2 domain, can be distinguished by segregation-of-function mutations. These results demonstrate dual roles of FAAP24 in DNA damage response against crosslinking lesions, one through the formation of FANCM/FAAP24 heterodimer and the other via its ssDNA-binding activity required in optimized checkpoint activation.


  • Organizational Affiliation

    Department of Experimental Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Fanconi anemia-associated protein of 24 kDa63Homo sapiensMutation(s): 0 
Gene Names: FAAP24C19orf40
UniProt & NIH Common Fund Data Resources
Find proteins for Q9BTP7 (Homo sapiens)
Explore Q9BTP7 
Go to UniProtKB:  Q9BTP7
PHAROS:  Q9BTP7
GTEx:  ENSG00000131944 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9BTP7
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 10 
  • Selection Criteria: structures with the lowest energy 

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2013-09-18
    Type: Initial release
  • Version 1.1: 2022-08-24
    Changes: Data collection, Database references
  • Version 1.2: 2023-06-14
    Changes: Other
  • Version 1.3: 2024-05-15
    Changes: Data collection, Database references