5CZV

Crystal structure of Notch3 NRR in complex with 20350 Fab


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.19 Å
  • R-Value Free: 0.257 
  • R-Value Work: 0.204 
  • R-Value Observed: 0.206 

wwPDB Validation   3D Report Full Report


Ligand Structure Quality Assessment 


This is version 1.3 of the entry. See complete history


Literature

Characterization of activating mutations of NOTCH3 in T-cell acute lymphoblastic leukemia and anti-leukemic activity of NOTCH3 inhibitory antibodies.

Bernasconi-Elias, P.Hu, T.Jenkins, D.Firestone, B.Gans, S.Kurth, E.Capodieci, P.Deplazes-Lauber, J.Petropoulos, K.Thiel, P.Ponsel, D.Hee Choi, S.LeMotte, P.London, A.Goetcshkes, M.Nolin, E.Jones, M.D.Slocum, K.Kluk, M.J.Weinstock, D.M.Christodoulou, A.Weinberg, O.Jaehrling, J.Ettenberg, S.A.Buckler, A.Blacklow, S.C.Aster, J.C.Fryer, C.J.

(2016) Oncogene 35: 6077-6086

  • DOI: https://doi.org/10.1038/onc.2016.133
  • Primary Citation of Related Structures:  
    5CZV, 5CZX

  • PubMed Abstract: 

    Notch receptors have been implicated as oncogenic drivers in several cancers, the most notable example being NOTCH1 in T-cell acute lymphoblastic leukemia (T-ALL). To characterize the role of activated NOTCH3 in cancer, we generated an antibody that detects the neo-epitope created upon gamma-secretase cleavage of NOTCH3 to release its intracellular domain (ICD3), and sequenced the negative regulatory region (NRR) and PEST (proline, glutamate, serine, threonine) domain coding regions of NOTCH3 in a panel of cell lines. We also characterize NOTCH3 tumor-associated mutations that result in activation of signaling and report new inhibitory antibodies. We determined the structural basis for receptor inhibition by obtaining the first co-crystal structure of a NOTCH3 antibody with the NRR protein and defined two distinct epitopes for NRR antibodies. The antibodies exhibit potent anti-leukemic activity in cell lines and tumor xenografts harboring NOTCH3 activating mutations. Screening of primary T-ALL samples reveals that 2 of 40 tumors examined show active NOTCH3 signaling. We also identified evidence of NOTCH3 activation in 12 of 24 patient-derived orthotopic xenograft models, 2 of which exhibit activation of NOTCH3 without activation of NOTCH1. Our studies provide additional insights into NOTCH3 activation and offer a path forward for identification of cancers that are likely to respond to therapy with NOTCH3 selective inhibitory antibodies.


  • Organizational Affiliation

    Developmental and Molecular Pathways, Novartis Institutes for Biomedical Research, Cambridge, MA, USA.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Neurogenic locus notch homolog protein 3271Homo sapiensMutation(s): 0 
Gene Names: NOTCH3
UniProt & NIH Common Fund Data Resources
Find proteins for Q9UM47 (Homo sapiens)
Explore Q9UM47 
Go to UniProtKB:  Q9UM47
PHAROS:  Q9UM47
GTEx:  ENSG00000074181 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9UM47
Sequence Annotations
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Fab 20350 heavy chainB [auth H]223Homo sapiensMutation(s): 0 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
Sequence Annotations
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
Fab 20350 light chainC [auth L]214Homo sapiensMutation(s): 0 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
Sequence Annotations
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.19 Å
  • R-Value Free: 0.257 
  • R-Value Work: 0.204 
  • R-Value Observed: 0.206 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 91.917α = 90
b = 104.349β = 113.17
c = 92.849γ = 90
Software Package:
Software NamePurpose
BUSTER-TNTrefinement
SCALEPACKdata scaling
PDB_EXTRACTdata extraction
BUSTERrefinement

Structure Validation

View Full Validation Report



Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2016-06-01
    Type: Initial release
  • Version 1.1: 2016-12-07
    Changes: Database references
  • Version 1.2: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Data collection, Derived calculations, Structure summary
  • Version 1.3: 2023-09-27
    Changes: Data collection, Database references, Refinement description, Structure summary