1SGH

Moesin FERM domain bound to EBP50 C-terminal peptide


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.50 Å
  • R-Value Free: 0.401 
  • R-Value Work: 0.338 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

The EBP50-moesin interaction involves a binding site regulated by direct masking on the FERM domain

Finnerty, C.M.Chambers, D.Ingraffea, J.Faber, H.R.Karplus, P.A.Bretscher, A.

(2004) J Cell Sci 117: 1547-1552

  • DOI: 10.1242/jcs.01038
  • Primary Citation of Related Structures:  
    1SGH

  • PubMed Abstract: 
  • Members of the ezrin-radixin-moesin (ERM) protein family serve as regulated microfilament-membrane crosslinking proteins that, upon activation, bind the scaffolding protein ERM-phosphoprotein of 50 kDa (EBP50). Here we report a 3.5 A resolution diffr ...

    Members of the ezrin-radixin-moesin (ERM) protein family serve as regulated microfilament-membrane crosslinking proteins that, upon activation, bind the scaffolding protein ERM-phosphoprotein of 50 kDa (EBP50). Here we report a 3.5 A resolution diffraction analysis of a complex between the active moesin N-terminal FERM domain and a 38 residue peptide from the C terminus of EBP50. This crystallographic result, combined with sequence and structural comparisons, suggests that the C-terminal 11 residues of EBP50 binds as an alpha-helix at the same site occupied in the dormant monomer by the last 11 residues of the inhibitory moesin C-terminal tail. Biochemical support for this interpretation derives from in vitro studies showing that appropriate mutations in both the EBP50 tail peptide and the FERM domain reduce binding, and that a peptide representing just the C-terminal 14 residues of EBP50 also binds to moesin. Combined with the recent identification of the I-CAM-2 binding site on the ERM FERM domain (Hamada, K., Shimizu, T., Yonemura, S., Tsukita, S., and Hakoshima, T. (2003) EMBO J. 22, 502-514), this study reveals that the FERM domain contains two distinct binding sites for membrane-associated proteins. The contribution of each ligand to ERM function can now be dissected by making structure-based mutations that specifically affect the binding of each ligand.


    Organizational Affiliation

    Department of Molecular Biology and Genetics, Biotechnology Building, Cornell University, Ithaca, NY 14853, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
MoesinA297Homo sapiensMutation(s): 0 
Gene Names: MSN
Find proteins for P26038 (Homo sapiens)
Explore P26038 
Go to UniProtKB:  P26038
NIH Common Fund Data Resources
PHAROS  P26038
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Ezrin-radixin-moesin binding phosphoprotein 50B39N/AMutation(s): 0 
Find proteins for O14745 (Homo sapiens)
Explore O14745 
Go to UniProtKB:  O14745
NIH Common Fund Data Resources
PHAROS  O14745
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.50 Å
  • R-Value Free: 0.401 
  • R-Value Work: 0.338 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 127.6α = 90
b = 70.5β = 106.1
c = 62.8γ = 90
Software Package:
Software NamePurpose
MOSFLMdata reduction
SCALAdata scaling
CNSrefinement
CCP4data scaling
CNSphasing

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2004-06-29
    Type: Initial release
  • Version 1.1: 2008-04-29
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance