6PBC

Structural basis for the activation of PLC-gamma isozymes by phosphorylation and cancer-associated mutations

  • Classification: HYDROLASE
  • Organism(s): Rattus norvegicus
  • Expression System: Trichoplusia ni
  • Mutation(s): No 

  • Deposited: 2019-06-13 Released: 2020-01-08 
  • Deposition Author(s): Hajicek, N., Sondek, J.
  • Funding Organization(s): National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.46 Å
  • R-Value Free: 0.245 
  • R-Value Work: 0.202 
  • R-Value Observed: 0.205 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Structural basis for the activation of PLC-gamma isozymes by phosphorylation and cancer-associated mutations.

Hajicek, N.Keith, N.C.Siraliev-Perez, E.Temple, B.R.S.Huang, W.Zhang, Q.Harden, T.K.Sondek, J.

(2019) Elife 8

  • DOI: https://doi.org/10.7554/eLife.51700
  • Primary Citation of Related Structures:  
    6PBC

  • PubMed Abstract: 

    Direct activation of the human phospholipase C-γ isozymes (PLC-γ1, -γ2) by tyrosine phosphorylation is fundamental to the control of diverse biological processes, including chemotaxis, platelet aggregation, and adaptive immunity. In turn, aberrant activation of PLC-γ1 and PLC-γ2 is implicated in inflammation, autoimmunity, and cancer. Although structures of isolated domains from PLC-γ isozymes are available, these structures are insufficient to define how release of basal autoinhibition is coupled to phosphorylation-dependent enzyme activation. Here, we describe the first high-resolution structure of a full-length PLC-γ isozyme and use it to underpin a detailed model of their membrane-dependent regulation. Notably, an interlinked set of regulatory domains integrates basal autoinhibition, tyrosine kinase engagement, and additional scaffolding functions with the phosphorylation-dependent, allosteric control of phospholipase activation. The model also explains why mutant forms of the PLC-γ isozymes found in several cancers have a wide spectrum of activities, and highlights how these activities are tuned during disease.


  • Organizational Affiliation

    Department of Pharmacology, The University of North Carolina at Chapel Hill, Chapel Hill, United States.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
1-phosphatidylinositol 4,5-bisphosphate phosphodiesterase gamma,1-phosphatidylinositol 4,5-bisphosphate phosphodiesterase gamma-11,176Rattus norvegicusMutation(s): 0 
Gene Names: Plcg1rCG_32419
EC: 3.1.4.11
UniProt
Find proteins for G3V845 (Rattus norvegicus)
Explore G3V845 
Go to UniProtKB:  G3V845
Find proteins for P10686 (Rattus norvegicus)
Explore P10686 
Go to UniProtKB:  P10686
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupsG3V845P10686
Sequence Annotations
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.46 Å
  • R-Value Free: 0.245 
  • R-Value Work: 0.202 
  • R-Value Observed: 0.205 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 70.766α = 90
b = 82.441β = 90
c = 228.318γ = 90
Software Package:
Software NamePurpose
HKL-2000data reduction
HKL-2000data scaling
PHASERphasing
SOLVEphasing
RESOLVEphasing
PHENIXrefinement
PDB_EXTRACTdata extraction

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United StatesR01-GM057391

Revision History  (Full details and data files)

  • Version 1.0: 2020-01-08
    Type: Initial release
  • Version 1.1: 2024-03-13
    Changes: Data collection, Database references