Crystal structure of Myelin-gene Regulatory Factor DNA binding domain

Experimental Data Snapshot

  • Resolution: 2.46 Å
  • R-Value Free: 0.224 
  • R-Value Work: 0.175 
  • R-Value Observed: 0.180 

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Crystal structure of the DNA-binding domain of Myelin-gene Regulatory Factor.

Zhen, X.Li, B.Hu, F.Yan, S.Meloni, G.Li, H.Shi, N.

(2017) Sci Rep 7: 3696-3696

  • DOI: https://doi.org/10.1038/s41598-017-03768-9
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    Myelin-gene Regulatory Factor (MyRF) is one of the master transcription factors controlling myelin formation and development in oligodendrocytes which is crucial for the powerful brain functions. The N-terminal of MyRF, which contains a proline-rich region and a DNA binding domain (DBD), is auto-cleaved from the ER membrane, and then enters the nucleus to participate in transcription regulation of the myelin genes. Here we report the crystal structure of MyRF DBD. It shows an Ig-fold like architecture which consists of two antiparallel β-sheets with 7 main strands, packing against each other, forming a β-sandwich. Compared to its homolog, Ndt80, MyRF has a smaller and less complex DBD lacking the helices and the big loops outside the core. Structural alignment reveals that MyRF DBD possess less interaction sites with DNA than Ndt80 and may bind only at the major groove of DNA. Moreover, the structure reveals a trimeric assembly, agreeing with the previous report that MyRF DBD functions as a trimer. The mutant that we designed based on the structure disturbed trimer formation, but didn't affect the auto-cleavage reaction. It demonstrates that the activation of self-cleavage reaction of MyRF is independent of the presence of its N-terminal DBD homotrimer. The structure reported here will help to understand the molecular mechanism underlying the important roles of MyRF in myelin formation and development.

  • Organizational Affiliation

    State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, 350002, China.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Myelin regulatory factor186Mus musculusMutation(s): 0 
Gene Names: MyrfGm1804Gm98Mrf
UniProt & NIH Common Fund Data Resources
Find proteins for Q3UR85 (Mus musculus)
Explore Q3UR85 
Go to UniProtKB:  Q3UR85
IMPC:  MGI:2684944
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ3UR85
Sequence Annotations
  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChains TypeFormula2D DiagramParent
Query on MSE
Experimental Data & Validation

Experimental Data

  • Resolution: 2.46 Å
  • R-Value Free: 0.224 
  • R-Value Work: 0.175 
  • R-Value Observed: 0.180 
  • Space Group: P 3 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 103.97α = 90
b = 103.97β = 90
c = 46.73γ = 120
Software Package:
Software NamePurpose
xia2data reduction
xia2data scaling

Structure Validation

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Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
National Natural Science Foundation of ChinaChina31570763
Chinese Academy of SciencesChina100 Talents Program

Revision History  (Full details and data files)

  • Version 1.0: 2017-06-28
    Type: Initial release
  • Version 1.1: 2017-10-18
    Changes: Author supporting evidence