Structure of isolated FERM domain and first long helix of moesin

Experimental Data Snapshot

  • Resolution: 2.70 Å
  • R-Value Free: 0.297 
  • R-Value Work: 0.254 
  • R-Value Observed: 0.254 

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The 2.7 A Crystal Structure of the Activated Ferm Domain of Moesin: An Analysis of Structural Changes on Activation

Edwards, S.D.Keep, N.H.

(2001) Biochemistry 40: 7061

  • DOI: https://doi.org/10.1021/bi010419h
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    Moesin binds to a large range of proteins through its N terminal FERM (band 4.1, ezrin, radixin, moesin) domain. In full-length moesin isolated from cells, this binding is masked by binding to the C-terminal domain of moesin (C-ERMAD). Activation takes place by phosphorylation of Thr 558 in the C-ERMAD, which releases the C-ERMAD. A recently determined crystal structure of a noncovalent complex of the FERM and C-ERMAD domains showed for the first time that the structure of the FERM domain consists of three subdomains, each of which is similar to known structures. The structure reported here also contains a unique 47-residue helix pointing away from the FERM domain at the start of the alpha domain, in agreement with secondary structure predictions. Removal of the C-ERMAD does not result in a huge rearrangement of the FERM domain, but comparison with the activated radixin structure shows a consistent set of small changes. Not surprisingly, the exposed C-ERMAD binding area interacts in crystal contacts. More interestingly, a negatively charged peptide binds to the inositol site in a crystal contact and causes a greater conformational change in the structure than inositol.

  • Organizational Affiliation

    BBSRC Bloomsbury Centre for Structural Biology and School of Crystallography, Birkbeck College, University of London, Malet Street, London WC1E 7HX, UK.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
MOESIN346Homo sapiensMutation(s): 0 
UniProt & NIH Common Fund Data Resources
Find proteins for P26038 (Homo sapiens)
Explore P26038 
Go to UniProtKB:  P26038
PHAROS:  P26038
GTEx:  ENSG00000147065 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP26038
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 2.70 Å
  • R-Value Free: 0.297 
  • R-Value Work: 0.254 
  • R-Value Observed: 0.254 
  • Space Group: P 42 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 94.36α = 90
b = 94.36β = 90
c = 156.05γ = 90
Software Package:
Software NamePurpose
MOSFLMdata reduction
SCALAdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2001-06-27
    Type: Initial release
  • Version 1.1: 2015-02-11
    Changes: Database references, Derived calculations, Non-polymer description, Other, Refinement description, Source and taxonomy, Structure summary, Version format compliance
  • Version 1.2: 2024-05-08
    Changes: Data collection, Database references, Other