4CUD

Human Notch1 EGF domains 11-13 mutant fucosylated at T466


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.85 Å
  • R-Value Free: 0.260 
  • R-Value Work: 0.224 
  • R-Value Observed: 0.226 

Starting Model: experimental
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Ligand Structure Quality Assessment 


This is version 1.4 of the entry. See complete history


Literature

Fringe-Mediated Extension of O-Linked Fucose in the Ligand-Binding Region of Notch1 Increases Binding to Mammalian Notch Ligands.

Taylor, P.Takeuchi, H.Sheppard, D.Chillakuri, C.Lea, S.M.Haltiwanger, R.S.Handford, P.A.

(2014) Proc Natl Acad Sci U S A 111: 7290

  • DOI: https://doi.org/10.1073/pnas.1319683111
  • Primary Citation of Related Structures:  
    4CUD, 4CUE, 4CUF, 4D0E, 4D0F

  • PubMed Abstract: 

    The Notch signaling pathway is essential for many aspects of development, cell fate determination, and tissue homeostasis. Notch signaling can be modulated by posttranslational modifications to the Notch receptor, which are known to alter both ligand binding and receptor activation. We have modified the ligand-binding region (EGF domains 11-13) of human Notch1 (hN1) with O-fucose and O-glucose glycans and shown by flow cytometry and surface plasmon resonance that the Fringe-catalyzed addition of GlcNAc to the O-fucose at T466 in EGF12 substantially increases binding to Jagged1 and Delta-like 1 (DLL1) ligands. We have subsequently determined the crystal structures of EGF domains 11-13 of hN1 modified with either the O-fucose monosaccharide or the GlcNAc-fucose disaccharide at T466 of EGF12 and observed no change in backbone structure for each variant. Collectively, these data demonstrate a role for GlcNAc in modulating the ligand-binding site in hN1 EGF12, resulting in an increased affinity of this region for ligands Jagged1 and DLL1. We propose that this finding explains the Fringe-catalyzed enhancement of Notch-Delta signaling observed in flies and humans, but suggest that the inhibitory effect of Fringe on Jagged/Serrate mediated signaling involves other regions of Notch.


  • Organizational Affiliation

    Department of Biochemistry, University of Oxford, Oxford OX1 3QU, United Kingdom;


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
NEUROGENIC LOCUS NOTCH HOMOLOG PROTEIN 1135Homo sapiensMutation(s): 0 
UniProt & NIH Common Fund Data Resources
Find proteins for P46531 (Homo sapiens)
Explore P46531 
Go to UniProtKB:  P46531
PHAROS:  P46531
GTEx:  ENSG00000148400 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP46531
Glycosylation
Glycosylation Sites: 1Go to GlyGen: P46531-1
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.85 Å
  • R-Value Free: 0.260 
  • R-Value Work: 0.224 
  • R-Value Observed: 0.226 
  • Space Group: P 31 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 28.29α = 90
b = 28.29β = 90
c = 282.732γ = 120
Software Package:
Software NamePurpose
REFMACrefinement
xia2data reduction
xia2data scaling
REFMACphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2014-05-21
    Type: Initial release
  • Version 1.1: 2014-06-04
    Changes: Database references
  • Version 1.2: 2018-02-07
    Changes: Structure summary
  • Version 1.3: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Data collection, Derived calculations, Other, Structure summary
  • Version 1.4: 2023-12-20
    Changes: Data collection, Database references, Refinement description, Structure summary