6PBC

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


Experimental Data Snapshot

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

wwPDB Validation 3D Report Full Report


This is version 1.0 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: 10.7554/eLife.51700

  • PubMed Abstract: 
  • Direct activation of the human phospholipase C-g isozymes (PLC-g1, -g2) by tyrosine phosphorylation is fundamental to the control of diverse biological processes, including chemotaxis, platelet aggregation, and adaptive immunity. In turn, aberrant ac ...

    Direct activation of the human phospholipase C-g isozymes (PLC-g1, -g2) 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-g1 and PLC-g2 is implicated in inflammation, autoimmunity, and cancer. Although structures of isolated domains from PLC-g 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-g 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-g isozymes found in several cancers have a wide spectrum of activities, and highlights how these activities are tuned during disease.


    Organizational Affiliation

    Department of Biochemistry and Biophysics, University of North Carolina at Chapel Hill, Chapel Hill, United States.,R L Juliano Structural Bioinformatics Core Facility, University of North Carolina at Chapel Hill, Chapel Hill, United States.,Department of Pharmacology, University of North Carolina at Chapel Hill, Chapel Hill, United States.,Division of Chemical Biology and Medicinal Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, United States.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
1-phosphatidylinositol 4,5-bisphosphate phosphodiesterase gamma,1-phosphatidylinositol 4,5-bisphosphate phosphodiesterase gamma-1
A
1176Rattus norvegicusMutation(s): 0 
Gene Names: Plcg1, Plcg1
EC: 3.1.4.11 3.1.4.11
Find proteins for G3V845 (Rattus norvegicus)
Go to UniProtKB:  G3V845
Find proteins for P10686 (Rattus norvegicus)
Go to UniProtKB:  P10686
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NA
Query on NA

Download SDF File 
Download CCD File 
A
SODIUM ION
Na
FKNQFGJONOIPTF-UHFFFAOYSA-N
 Ligand Interaction
CA
Query on CA

Download SDF File 
Download CCD File 
A
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.46 Å
  • R-Value Free: 0.245 
  • R-Value Work: 0.202 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 70.766α = 90.00
b = 82.441β = 90.00
c = 228.318γ = 90.00
Software Package:
Software NamePurpose
HKL-2000data scaling
PDB_EXTRACTdata extraction
PHASERphasing
HKL-2000data reduction
RESOLVEphasing
PHENIXrefinement
SOLVEphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



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 

  • Version 1.0: 2020-01-08
    Type: Initial release