6PY8

Crystal structure of the RBPJ-NOTCH1-NRARP ternary complex bound to DNA


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.75 Å
  • R-Value Free: 0.315 
  • R-Value Work: 0.267 
  • R-Value Observed: 0.270 

wwPDB Validation 3D Report Full Report


This is version 2.2 of the entry. See complete history


Literature

Extension of the Notch intracellular domain ankyrin repeat stack by NRARP promotes feedback inhibition of Notch signaling.

Jarrett, S.M.Seegar, T.C.M.Andrews, M.Adelmant, G.Marto, J.A.Aster, J.C.Blacklow, S.C.

(2019) Sci Signal 12

  • DOI: 10.1126/scisignal.aay2369
  • Primary Citation of Related Structures:  
    6PY8

  • PubMed Abstract: 
  • Canonical Notch signaling relies on regulated proteolysis of the receptor Notch to generate a nuclear effector that induces the transcription of Notch-responsive genes. In higher organisms, one Notch-responsive gene that is activated in many differen ...

    Canonical Notch signaling relies on regulated proteolysis of the receptor Notch to generate a nuclear effector that induces the transcription of Notch-responsive genes. In higher organisms, one Notch-responsive gene that is activated in many different cell types encodes the Notch-regulated ankyrin repeat protein (NRARP), which acts as a negative feedback regulator of Notch responses. Here, we showed that NRARP inhibited the growth of Notch-dependent T cell acute lymphoblastic leukemia (T-ALL) cell lines and bound directly to the core Notch transcriptional activation complex (NTC), requiring both the transcription factor RBPJ and the Notch intracellular domain (NICD), but not Mastermind-like proteins or DNA. The crystal structure of an NRARP-NICD1-RBPJ-DNA complex, determined to 3.75 Å resolution, revealed that the assembly of NRARP-NICD1-RBPJ complexes relied on simultaneous engagement of RBPJ and NICD1, with the three ankyrin repeats of NRARP extending the Notch1 ankyrin repeat stack. Mutations at the NRARP-NICD1 interface disrupted entry of the proteins into NTCs and abrogated feedback inhibition in Notch signaling assays in cultured cells. Forced expression of NRARP reduced the abundance of NICD in cells, suggesting that NRARP may promote the degradation of NICD. These studies establish the structural basis for NTC engagement by NRARP and provide insights into a critical negative feedback mechanism that regulates Notch signaling.


    Organizational Affiliation

    Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA 02215, USA.



Macromolecules

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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Notch-regulated ankyrin repeat-containing proteinBG114Homo sapiensMutation(s): 0 
Gene Names: NRARP
Find proteins for Q7Z6K4 (Homo sapiens)
Explore Q7Z6K4 
Go to UniProtKB:  Q7Z6K4
NIH Common Fund Data Resources
PHAROS  Q7Z6K4
Protein Feature View
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  • Reference Sequence
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
Recombining binding protein suppressor of hairlessCE444Homo sapiensMutation(s): 0 
Gene Names: RBPJIGKJRBIGKJRB1RBPJKRBPSUH
Find proteins for Q06330 (Homo sapiens)
Explore Q06330 
Go to UniProtKB:  Q06330
NIH Common Fund Data Resources
PHAROS  Q06330
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  • Reference Sequence
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Entity ID: 5
MoleculeChainsSequence LengthOrganismDetailsImage
Neurogenic locus notch homolog protein 1FK369Homo sapiensMutation(s): 0 
Gene Names: NOTCH1TAN1
Find proteins for P46531 (Homo sapiens)
Explore P46531 
Go to UniProtKB:  P46531
NIH Common Fund Data Resources
PHAROS  P46531
Protein Feature View
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  • Reference Sequence
  • Find similar nucleic acids by:  Sequence   |   Structure
  • Entity ID: 2
    MoleculeChainsLengthOrganismImage
    DNAA, X16Homo sapiens
    • Find similar nucleic acids by:  Sequence   |   Structure
    • Entity ID: 3
      MoleculeChainsLengthOrganismImage
      DNAD, Y16Homo sapiens
      Experimental Data & Validation

      Experimental Data

      • Method: X-RAY DIFFRACTION
      • Resolution: 3.75 Å
      • R-Value Free: 0.315 
      • R-Value Work: 0.267 
      • R-Value Observed: 0.270 
      • Space Group: P 21 21 21
      Unit Cell:
      Length ( Å )Angle ( ˚ )
      a = 79.88α = 90
      b = 103.65β = 90
      c = 301.42γ = 90
      Software Package:
      Software NamePurpose
      PHENIXrefinement
      XDSdata scaling
      PHASERphasing
      XDSdata processing

      Structure Validation

      View Full Validation Report



      Entry History & Funding Information

      Deposition Data


      Funding OrganizationLocationGrant Number
      National Institutes of Health/National Human Genome Research Institute (NIH/NHGRI)United StatesR35 CA220340

      Revision History 

      • Version 1.0: 2019-08-14
        Type: Initial release
      • Version 2.0: 2019-09-04
        Changes: Advisory, Atomic model, Data collection, Database references, Derived calculations, Other, Polymer sequence, Refinement description, Structure summary
      • Version 2.1: 2019-12-18
        Changes: Author supporting evidence
      • Version 2.2: 2020-02-26
        Changes: Database references