1SGH

Moesin FERM domain bound to EBP50 C-terminal peptide


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.5 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

  • 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: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Moesin
A
297Homo sapiensGene Names: MSN
Find proteins for P26038 (Homo sapiens)
Go to Gene View: MSN
Go to UniProtKB:  P26038
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Ezrin-radixin-moesin binding phosphoprotein 50
B
39Homo sapiensGene Names: SLC9A3R1 (NHERF, NHERF1)
Find proteins for O14745 (Homo sapiens)
Go to Gene View: SLC9A3R1
Go to UniProtKB:  O14745
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.5 Å
  • R-Value Free: 0.401 
  • R-Value Work: 0.338 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 127.600α = 90.00
b = 70.500β = 106.10
c = 62.800γ = 90.00
Software Package:
Software NamePurpose
SCALAdata scaling
CNSphasing
MOSFLMdata reduction
CNSrefinement
CCP4data scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

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