2WA0

Crystal structure of the human MAGEA4


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.274 
  • R-Value Work: 0.243 
  • R-Value Observed: 0.244 

wwPDB Validation 3D Report Full Report


This is version 1.4 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: 10.1371/journal.pone.0148762
  • Structures With Same Primary Citation

  • 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 an ...

    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: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
MELANOMA-ASSOCIATED ANTIGEN 4
A
240Homo sapiensMutation(s): 0 
Gene Names: MAGEA4MAGE4
Find proteins for P43358 (Homo sapiens)
Go to UniProtKB:  P43358
NIH Common Fund Data Resources
PHAROS  P43358
Protein Feature View
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.274 
  • R-Value Work: 0.243 
  • R-Value Observed: 0.244 
  • Space Group: P 65 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 81.63α = 90
b = 81.63β = 90
c = 210.891γ = 120
Software Package:
Software NamePurpose
MOSFLMdata reduction
SCALAdata scaling
SHELXphasing
SHARPphasing
REFMACrefinement

Structure Validation

View Full Validation Report



Entry History 

Revision History 

  • Version 1.0: 2009-03-10
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Advisory, Version format compliance
  • Version 1.2: 2015-04-29
    Changes: Data collection, Refinement description
  • Version 1.3: 2016-03-09
    Changes: Database references
  • Version 1.4: 2018-01-24
    Changes: Structure summary