3CZU

Crystal structure of the human ephrin A2- ephrin A1 complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.65 Å
  • R-Value Free: 0.225 
  • R-Value Work: 0.193 
  • R-Value Observed: 0.195 

Starting Models: experimental
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wwPDB Validation   3D Report Full Report


This is version 2.2 of the entry. See complete history


Literature

Architecture of Eph receptor clusters.

Himanen, J.P.Yermekbayeva, L.Janes, P.W.Walker, J.R.Xu, K.Atapattu, L.Rajashankar, K.R.Mensinga, A.Lackmann, M.Nikolov, D.B.Dhe-Paganon, S.

(2010) Proc Natl Acad Sci U S A 107: 10860-10865

  • DOI: https://doi.org/10.1073/pnas.1004148107
  • Primary Citation of Related Structures:  
    3C8X, 3CZU, 3FL7, 3MBW, 3MX0

  • PubMed Abstract: 

    Eph receptor tyrosine kinases and their ephrin ligands regulate cell navigation during normal and oncogenic development. Signaling of Ephs is initiated in a multistep process leading to the assembly of higher-order signaling clusters that set off bidirectional signaling in interacting cells. However, the structural and mechanistic details of this assembly remained undefined. Here we present high-resolution structures of the complete EphA2 ectodomain and complexes with ephrin-A1 and A5 as the base unit of an Eph cluster. The structures reveal an elongated architecture with novel Eph/Eph interactions, both within and outside of the Eph ligand-binding domain, that suggest the molecular mechanism underlying Eph/ephrin clustering. Structure-function analysis, by using site-directed mutagenesis and cell-based signaling assays, confirms the importance of the identified oligomerization interfaces for Eph clustering.


  • Organizational Affiliation

    Structural Biology Program, Memorial Sloan-Kettering Cancer Center, 1275 York Avenue, New York, NY 10065, USA.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Ephrin type-A receptor 2207Homo sapiensMutation(s): 0 
Gene Names: EPHA2ECK
EC: 2.7.10.1
UniProt & NIH Common Fund Data Resources
Find proteins for P29317 (Homo sapiens)
Explore P29317 
Go to UniProtKB:  P29317
PHAROS:  P29317
GTEx:  ENSG00000142627 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP29317
Sequence Annotations
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Ephrin-A1182Homo sapiensMutation(s): 1 
Gene Names: EFNA1EPLG1LERK1TNFAIP4
UniProt & NIH Common Fund Data Resources
Find proteins for P20827 (Homo sapiens)
Explore P20827 
Go to UniProtKB:  P20827
PHAROS:  P20827
GTEx:  ENSG00000169242 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP20827
Glycosylation
Glycosylation Sites: 1Go to GlyGen: P20827-1
Sequence Annotations
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  • Reference Sequence
Oligosaccharides

Help

Entity ID: 3
MoleculeChains Length2D Diagram Glycosylation3D Interactions
alpha-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose
C
3N-Glycosylation
Glycosylation Resources
GlyTouCan:  G62182OO
GlyCosmos:  G62182OO
GlyGen:  G62182OO
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.65 Å
  • R-Value Free: 0.225 
  • R-Value Work: 0.193 
  • R-Value Observed: 0.195 
  • Space Group: P 65 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 99.431α = 90
b = 99.431β = 90
c = 204.879γ = 120
Software Package:
Software NamePurpose
PHASERphasing
REFMACrefinement
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

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Entry History 

Revision History  (Full details and data files)

  • Version 1.0: 2008-08-12
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Non-polymer description, Version format compliance
  • Version 2.0: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Atomic model, Data collection, Database references, Derived calculations, Structure summary
  • Version 2.1: 2023-08-30
    Changes: Data collection, Database references, Refinement description, Structure summary
  • Version 2.2: 2024-11-20
    Changes: Structure summary