7AFS

The structure of Artemis variant D37A


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.70 Å
  • R-Value Free: 0.216 
  • R-Value Work: 0.186 
  • R-Value Observed: 0.187 

Starting Model: experimental
View more details

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Structural and mechanistic insights into the Artemis endonuclease and strategies for its inhibition.

Yosaatmadja, Y.Baddock, H.T.Newman, J.A.Bielinski, M.Gavard, A.E.Mukhopadhyay, S.M.M.Dannerfjord, A.A.Schofield, C.J.McHugh, P.J.Gileadi, O.

(2021) Nucleic Acids Res 49: 9310-9326

  • DOI: https://doi.org/10.1093/nar/gkab693
  • Primary Citation of Related Structures:  
    6TT5, 7ABS, 7AF1, 7AFS, 7AFU, 7AGI, 7APV

  • PubMed Abstract: 

    Artemis (SNM1C/DCLRE1C) is an endonuclease that plays a key role in development of B- and T-lymphocytes and in dsDNA break repair by non-homologous end-joining (NHEJ). Artemis is phosphorylated by DNA-PKcs and acts to open DNA hairpin intermediates generated during V(D)J and class-switch recombination. Artemis deficiency leads to congenital radiosensitive severe acquired immune deficiency (RS-SCID). Artemis belongs to a superfamily of nucleases containing metallo-β-lactamase (MBL) and β-CASP (CPSF-Artemis-SNM1-Pso2) domains. We present crystal structures of the catalytic domain of wildtype and variant forms of Artemis, including one causing RS-SCID Omenn syndrome. The catalytic domain of the Artemis has similar endonuclease activity to the phosphorylated full-length protein. Our structures help explain the predominantly endonucleolytic activity of Artemis, which contrasts with the predominantly exonuclease activity of the closely related SNM1A and SNM1B MBL fold nucleases. The structures reveal a second metal binding site in its β-CASP domain unique to Artemis, which is amenable to inhibition by compounds including ebselen. By combining our structural data with that from a recently reported Artemis structure, we were able model the interaction of Artemis with DNA substrates. The structures, including one of Artemis with the cephalosporin ceftriaxone, will help enable the rational development of selective SNM1 nuclease inhibitors.


  • Organizational Affiliation

    Centre for Medicines Discovery, University of Oxford, ORCRB, Roosevelt Drive, Oxford OX3 7DQ, UK.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Protein artemis362Homo sapiensMutation(s): 1 
Gene Names: DCLRE1CARTEMISASCIDSCIDASNM1C
EC: 3.1
UniProt & NIH Common Fund Data Resources
Find proteins for Q96SD1 (Homo sapiens)
Explore Q96SD1 
Go to UniProtKB:  Q96SD1
PHAROS:  Q96SD1
GTEx:  ENSG00000152457 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ96SD1
Sequence Annotations
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.70 Å
  • R-Value Free: 0.216 
  • R-Value Work: 0.186 
  • R-Value Observed: 0.187 
  • Space Group: P 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 35.909α = 82.89
b = 48.062β = 76.43
c = 48.207γ = 86.38
Software Package:
Software NamePurpose
Aimlessdata scaling
PHASERphasing
REFMACrefinement
PDB_EXTRACTdata extraction
DIALSdata reduction

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Cancer Research UKUnited KingdomANR00730

Revision History  (Full details and data files)

  • Version 1.0: 2020-10-28
    Type: Initial release
  • Version 1.1: 2021-08-25
    Changes: Database references
  • Version 1.2: 2021-09-29
    Changes: Data collection, Database references
  • Version 1.3: 2024-01-31
    Changes: Data collection, Refinement description