6IAA

hRobo2 ectodomain


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.60 Å
  • R-Value Free: 0.287 
  • R-Value Work: 0.222 
  • R-Value Observed: 0.226 

wwPDB Validation   3D Report Full Report



Literature

Structural Principles in Robo Activation and Auto-inhibition.

Barak, R.Yom-Tov, G.Guez-Haddad, J.Gasri-Plotnitsky, L.Maimon, R.Cohen-Berkman, M.McCarthy, A.A.Perlson, E.Henis-Korenblit, S.Isupov, M.N.Opatowsky, Y.

(2019) Cell 177: 272-285.e16

  • DOI: 10.1016/j.cell.2019.02.004
  • Primary Citation of Related Structures:  
    6I9S, 6IAA

  • PubMed Abstract: 
  • Proper brain function requires high-precision neuronal expansion and wiring, processes controlled by the transmembrane Roundabout (Robo) receptor family and their Slit ligands. Despite their great importance, the molecular mechanism by which Robos' switc ...

    Proper brain function requires high-precision neuronal expansion and wiring, processes controlled by the transmembrane Roundabout (Robo) receptor family and their Slit ligands. Despite their great importance, the molecular mechanism by which Robos' switch from "off" to "on" states remains unclear. Here, we report a 3.6 Å crystal structure of the intact human Robo2 ectodomain (domains D1-8). We demonstrate that Robo cis dimerization via D4 is conserved through hRobo1, 2, and 3 and the C. elegans homolog SAX-3 and is essential for SAX-3 function in vivo. The structure reveals two levels of auto-inhibition that prevent premature activation: (1) cis blocking of the D4 dimerization interface and (2) trans interactions between opposing Robo receptors that fasten the D4-blocked conformation. Complementary experiments in mouse primary neurons and C. elegans support the auto-inhibition model. These results suggest that Slit stimulation primarily drives the release of Robo auto-inhibition required for dimerization and activation.


    Organizational Affiliation

    The Mina & Everard Goodman Faculty of Life Sciences, Bar-Ilan University, Israel. Electronic address: yarden.opatowsky@biu.ac.il.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Roundabout homolog 2 ABC859Homo sapiensMutation(s): 0 
Gene Names: ROBO2KIAA1568
Find proteins for Q9HCK4 (Homo sapiens)
Explore Q9HCK4 
Go to UniProtKB:  Q9HCK4
NIH Common Fund Data Resources
PHAROS:  Q9HCK4
Protein Feature View
Expand
  • Reference Sequence
Oligosaccharides

Help

Entity ID: 2
MoleculeChainsChain Length2D Diagram Glycosylation3D Interactions
2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose
D, F, H
2 N-Glycosylation Oligosaccharides Interaction
Entity ID: 3
MoleculeChainsChain Length2D Diagram Glycosylation3D Interactions
alpha-D-mannopyranose-(1-3)-[alpha-D-mannopyranose-(1-6)]beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose
E, G, I
5 N-Glycosylation Oligosaccharides Interaction
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE
A,B,CL-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.60 Å
  • R-Value Free: 0.287 
  • R-Value Work: 0.222 
  • R-Value Observed: 0.226 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 290.767α = 90
b = 81.569β = 94
c = 158.656γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
XDSdata reduction
XDSdata scaling
MOLREPphasing

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Israel Science FoundationIsrael182/10 and 1425/15

Revision History 

  • Version 1.0: 2019-03-13
    Type: Initial release
  • Version 1.1: 2019-03-20
    Changes: Data collection, Database references
  • Version 1.2: 2019-04-17
    Changes: Data collection, Database references
  • Version 2.0: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Atomic model, Data collection, Derived calculations, Structure summary