First and second Ig domains from human Robo1

Experimental Data Snapshot

  • Resolution: 2.50 Å
  • R-Value Free: 0.280 
  • R-Value Work: 0.227 
  • R-Value Observed: 0.229 

wwPDB Validation   3D Report Full Report

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Structural Insights Into the Slit-Robo Complex.

Morlot, C.Thielens, N.M.Ravelli, R.B.G.Hemrika, W.Romijn, R.A.Gros, P.Cusack, S.Mccarthy, A.A.

(2007) Proc Natl Acad Sci U S A 104: 14923

  • DOI: https://doi.org/10.1073/pnas.0705310104
  • Primary Citation of Related Structures:  
    2V9Q, 2V9R, 2V9S, 2V9T

  • PubMed Abstract: 

    Slits are large multidomain leucine-rich repeat (LRR)-containing proteins that provide crucial guidance cues in neuronal and vascular development. More recently, Slits have been implicated in heart morphogenesis, angiogenesis, and tumor metastasis. Slits are ligands for the Robo (Roundabout) receptors, which belong to the Ig superfamily of transmembrane signaling molecules. The Slit-Robo interaction is mediated by the second LRR domain of Slit and the two N-terminal Ig domains of Robo, but the molecular details of this interaction and how it induces signaling remain unclear. Here we describe the crystal structures of the second LRR domain of human Slit2 (Slit2 D2), the first two Ig domains of its receptor Robo1 (Ig1-2), and the minimal complex between these proteins (Slit2 D2-Robo1 Ig1). Slit2 D2 binds with its concave surface to the side of Ig1 with electrostatic and hydrophobic contact regions mediated by residues that are conserved in other family members. Surface plasmon resonance experiments and a mutational analysis of the interface confirm that Ig1 is the primary domain for binding Slit2. These structures provide molecular insight into Slit-Robo complex formation and will be important for the development of novel cancer therapeutics.

  • Organizational Affiliation

    European Molecular Biology Laboratory, 6 Rue Jules Horowitz, BP 181, 38042 Grenoble, France.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
ROUNDABOUT HOMOLOG 1212Homo sapiensMutation(s): 1 
UniProt & NIH Common Fund Data Resources
Find proteins for Q9Y6N7 (Homo sapiens)
Explore Q9Y6N7 
Go to UniProtKB:  Q9Y6N7
GTEx:  ENSG00000169855 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9Y6N7
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 2.50 Å
  • R-Value Free: 0.280 
  • R-Value Work: 0.227 
  • R-Value Observed: 0.229 
  • Space Group: P 21 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 38.23α = 90
b = 68.53β = 90
c = 103.88γ = 90
Software Package:
Software NamePurpose
XDSdata reduction
XSCALEdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2007-09-25
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Advisory, Version format compliance