6IRD

Complex structure of INADL PDZ89 and PLCb4 C-terminal CC-PBM


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.81 Å
  • R-Value Free: 0.302 
  • R-Value Work: 0.244 
  • R-Value Observed: 0.247 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

An unexpected INAD PDZ tandem-mediated plc beta binding in Drosophila photo receptors.

Ye, F.Huang, Y.Li, J.Ma, Y.Xie, C.Liu, Z.Deng, X.Wan, J.Xue, T.Liu, W.Zhang, M.

(2018) Elife 7

  • DOI: 10.7554/eLife.41848
  • Primary Citation of Related Structures:  
    6IRB, 6IRC, 6IRD, 6IRE

  • PubMed Abstract: 
  • INAD assembles key enzymes of the Drosophila compound eye photo-transduction pathway into a supramolecular complex, supporting efficient and fast light signaling. However, the molecular mechanism that governs the interaction between INAD and NORPA (phospholipase Cβ, PLCβ), a key step for the fast kinetics of the light signaling, is not known ...

    INAD assembles key enzymes of the Drosophila compound eye photo-transduction pathway into a supramolecular complex, supporting efficient and fast light signaling. However, the molecular mechanism that governs the interaction between INAD and NORPA (phospholipase Cβ, PLCβ), a key step for the fast kinetics of the light signaling, is not known. Here, we show that the NORPA C-terminal coiled-coil domain and PDZ-binding motif (CC-PBM) synergistically bind to INAD PDZ45 tandem with an unexpected mode and unprecedented high affinity. Guided by the structure of the INAD-NORPA complex, we discover that INADL is probably a mammalian counterpart of INAD. The INADL PDZ89 tandem specifically binds to PLCβ4 with a mode that is strikingly similar to that of the INAD-NORPA complex, as revealed by the structure of the INADL PDZ89-PLCβ4 CC-PBM complex. Therefore, our study suggests that the highly specific PDZ tandem - PLCβ interactions are an evolutionarily conserved mechanism in PLCβ signaling in the animal kingdom.


    Organizational Affiliation

    Shenzhen Key Laboratory for Neuronal Structural Biology, Biomedical Research Institute, Shenzhen Peking University-The Hong Kong University of Science and Technology Medical Center, Shenzhen, China.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
1-phosphatidylinositol 4,5-bisphosphate phosphodiesteraseA [auth B]266Mus musculusMutation(s): 8 
Gene Names: Plcb4
EC: 3.1.4.11
UniProt & NIH Common Fund Data Resources
Find proteins for Q91UZ1 (Mus musculus)
Explore Q91UZ1 
Go to UniProtKB:  Q91UZ1
IMPC:  MGI:107464
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
InaD-like proteinB [auth C]216Homo sapiensMutation(s): 0 
Gene Names: PATJINADLCIPP
UniProt & NIH Common Fund Data Resources
Find proteins for Q8NI35 (Homo sapiens)
Explore Q8NI35 
Go to UniProtKB:  Q8NI35
PHAROS:  Q8NI35
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.81 Å
  • R-Value Free: 0.302 
  • R-Value Work: 0.244 
  • R-Value Observed: 0.247 
  • Space Group: P 31 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 69.089α = 90
b = 69.089β = 90
c = 200.375γ = 120
Software Package:
Software NamePurpose
PHENIXrefinement
DENZOdata reduction
SCALEPACKdata scaling
PDB_EXTRACTdata extraction
AutoSolphasing
SHELXDphasing

Structure Validation

View Full Validation Report




Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2019-01-23
    Type: Initial release
  • Version 1.1: 2020-10-28
    Changes: Database references, Derived calculations