X-ray structure of NYSGRC target T-45

Experimental Data Snapshot

  • Resolution: 2.12 Å
  • R-Value Free: 0.233 
  • R-Value Work: 0.204 

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This is version 1.4 of the entry. See complete history


Structural bases for CRMP function in plexin-dependent semaphorin3A signaling

Deo, R.C.Schmidt, E.F.Elhabazi, A.Togashi, H.Burley, S.K.Strittmatter, S.M.

(2004) EMBO J 23: 9-22

  • DOI: https://doi.org/10.1038/sj.emboj.7600021
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    Collapsin response mediator proteins (CRMPs) are cytosolic phosphoproteins involved in neuronal differentiation and axonal guidance. CRMP2 was previously shown to mediate the repulsive effect of Sema3A on axons and to participate in axonal specification. The X-ray crystal structure of murine CRMP1 was determined at 2.1 A resolution and demonstrates that CRMP1 is a bilobed 'lung-shaped' protein forming a tetrameric assembly. Structure-based mutagenesis of surface-exposed residues was employed to map functional domains. As a rapid assay for CRMP, we exploited a reconstituted Sema3A signaling system in COS-7 cells expressing the receptor components Neuropilin1 and PlexinA1 (NP1/PlexA1). In these cells, CRMP and PlexA1 form a physical complex that is reduced in amount by NP1 but enhanced by Sema3A/NP1. Furthermore, CRMP accelerates Sema3A-induced cell contraction. Alanine substitutions in one domain of CRMP1 produce a constitutively active protein that causes Sema3A-independent COS-7 contraction. This mutant CRMP mimics the DRG neurite outgrowth-inhibiting effects of Sema3A and reduces Sema3A-induced axonal repulsion. These data provide a structural view of CRMP function in Plex-dependent Sema3A signaling.

  • Organizational Affiliation

    Laboratory of Molecular Biophysics, The Rockefeller University, New York, NY, USA.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
A, B
518Mus musculusMutation(s): 0 
Gene Names: crmp1 (8-525)
UniProt & NIH Common Fund Data Resources
Find proteins for P97427 (Mus musculus)
Explore P97427 
Go to UniProtKB:  P97427
IMPC:  MGI:107793
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP97427
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 2.12 Å
  • R-Value Free: 0.233 
  • R-Value Work: 0.204 
  • Space Group: C 2 2 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 123.396α = 90
b = 152.111β = 90
c = 157.165γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

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Entry History 

Revision History  (Full details and data files)

  • Version 1.0: 2003-08-05
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2021-02-03
    Changes: Database references, Structure summary
  • Version 1.4: 2024-02-07
    Changes: Data collection, Database references