4V0P

Crystal structure of the MAGE homology domain of human MAGE-A3


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.07 Å
  • R-Value Free: 0.238 
  • R-Value Work: 0.200 
  • R-Value Observed: 0.202 

Starting Model: experimental
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wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Structures of Two Melanoma-Associated Antigens Suggest Allosteric Regulation of Effector Binding.

Newman, J.A.Cooper, C.D.O.Roos, A.K.Aitkenhead, H.Oppermann, U.C.T.Cho, H.J.Osman, R.Gileadi, O.

(2016) PLoS One 11: 48762

  • DOI: https://doi.org/10.1371/journal.pone.0148762
  • Primary Citation of Related Structures:  
    2WA0, 4V0P, 5HVQ

  • PubMed Abstract: 

    The MAGE (melanoma associated antigen) protein family are tumour-associated proteins normally present only in reproductive tissues such as germ cells of the testis. The human genome encodes over 60 MAGE genes of which one class (containing MAGE-A3 and MAGE-A4) are exclusively expressed in tumours, making them an attractive target for the development of targeted and immunotherapeutic cancer treatments. Some MAGE proteins are thought to play an active role in driving cancer, modulating the activity of E3 ubiquitin ligases on targets related to apoptosis. Here we determined the crystal structures of MAGE-A3 and MAGE-A4. Both proteins crystallized with a terminal peptide bound in a deep cleft between two tandem-arranged winged helix domains. MAGE-A3 (but not MAGE-A4), is predominantly dimeric in solution. Comparison of MAGE-A3 and MAGE-A3 with a structure of an effector-bound MAGE-G1 suggests that a major conformational rearrangement is required for binding, and that this conformational plasticity may be targeted by allosteric binders.


  • Organizational Affiliation

    Structural Genomics Consortium, University of Oxford, ORCRB, Roosevelt Drive, Oxford, OX3 7DQ, United Kingdom.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
MELANOMA-ASSOCIATED ANTIGEN 3213Homo sapiensMutation(s): 0 
UniProt & NIH Common Fund Data Resources
Find proteins for P43357 (Homo sapiens)
Explore P43357 
Go to UniProtKB:  P43357
PHAROS:  P43357
GTEx:  ENSG00000221867 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP43357
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.07 Å
  • R-Value Free: 0.238 
  • R-Value Work: 0.200 
  • R-Value Observed: 0.202 
  • Space Group: P 61 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 61.473α = 90
b = 61.473β = 90
c = 292.831γ = 120
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
XDSdata scaling
PHASERphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2014-10-01
    Type: Initial release
  • Version 1.1: 2024-01-10
    Changes: Data collection, Database references, Other, Refinement description