Structure of Drosophila Notch EGF domains 11-13

Experimental Data Snapshot

  • Resolution: 1.52 Å
  • R-Value Free: 0.241 
  • R-Value Work: 0.201 
  • R-Value Observed: 0.203 

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This is version 1.2 of the entry. See complete history


The conserved C2 phospholipid-binding domain in Delta contributes to robust Notch signalling.

Martins, T.Meng, Y.Korona, B.Suckling, R.Johnson, S.Handford, P.A.Lea, S.M.Bray, S.J.

(2021) EMBO Rep 22: e52729-e52729

  • DOI: https://doi.org/10.15252/embr.202152729
  • Primary Citation of Related Structures:  
    7ALJ, 7ALK, 7ALT

  • PubMed Abstract: 

    Accurate Notch signalling is critical for development and homeostasis. Fine-tuning of Notch-ligand interactions has substantial impact on signalling outputs. Recent structural studies have identified a conserved N-terminal C2 domain in human Notch ligands which confers phospholipid binding in vitro. Here, we show that Drosophila ligands Delta and Serrate adopt the same C2 domain structure with analogous variations in the loop regions, including the so-called β1-2 loop that is involved in phospholipid binding. Mutations in the β1-2 loop of the Delta C2 domain retain Notch binding but have impaired ability to interact with phospholipids in vitro. To investigate its role in vivo, we deleted five residues within the β1-2 loop of endogenous Delta. Strikingly, this change compromises ligand function. The modified Delta enhances phenotypes produced by Delta loss-of-function alleles and suppresses that of Notch alleles. As the modified protein is present on the cell surface in normal amounts, these results argue that C2 domain phospholipid binding is necessary for robust signalling in vivo fine-tuning the balance of trans and cis ligand-receptor interactions.

  • Organizational Affiliation

    Department of Physiology Development and Neuroscience, University of Cambridge, Cambridge, UK.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Neurogenic locus Notch protein116Drosophila melanogasterMutation(s): 0 
Gene Names: NCG3936
Find proteins for P07207 (Drosophila melanogaster)
Explore P07207 
Go to UniProtKB:  P07207
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP07207
Sequence Annotations
  • Reference Sequence


Entity ID: 2
MoleculeChains Length2D Diagram Glycosylation3D Interactions
Glycosylation Resources
GlyTouCan:  G61966PH
GlyCosmos:  G61966PH
GlyGen:  G61966PH
Experimental Data & Validation

Experimental Data

  • Resolution: 1.52 Å
  • R-Value Free: 0.241 
  • R-Value Work: 0.201 
  • R-Value Observed: 0.203 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 180.82α = 90
b = 31.286β = 90.769
c = 21.795γ = 90
Software Package:
Software NamePurpose
xia2data reduction
SCALAdata scaling

Structure Validation

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Ligand Structure Quality Assessment 

Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
Medical Research Council (MRC, United Kingdom)United KingdomMR/L001187/1
Medical Research Council (MRC, United Kingdom)United KingdomMR-R009317/1
Wellcome TrustUnited Kingdom100298

Revision History  (Full details and data files)

  • Version 1.0: 2021-08-04
    Type: Initial release
  • Version 1.1: 2021-10-13
    Changes: Data collection, Database references
  • Version 1.2: 2024-01-31
    Changes: Data collection, Refinement description