2ZKM

Crystal Structure of Phospholipase C Beta 2


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.62 Å
  • R-Value Free: 0.213 
  • R-Value Work: 0.196 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

General and versatile autoinhibition of PLC isozymes

Hicks, S.N.Jezyk, M.R.Gershburg, S.Seifert, J.P.Harden, T.K.Sondek, J.

(2008) Mol.Cell 31: 383-394

  • DOI: 10.1016/j.molcel.2008.06.018

  • PubMed Abstract: 
  • Phospholipase C (PLC) isozymes are directly activated by heterotrimeric G proteins and Ras-like GTPases to hydrolyze phosphatidylinositol 4,5-bisphosphate into the second messengers diacylglycerol and inositol 1,4,5-trisphosphate. Although PLCs play ...

    Phospholipase C (PLC) isozymes are directly activated by heterotrimeric G proteins and Ras-like GTPases to hydrolyze phosphatidylinositol 4,5-bisphosphate into the second messengers diacylglycerol and inositol 1,4,5-trisphosphate. Although PLCs play central roles in myriad signaling cascades, the molecular details of their activation remain poorly understood. As described here, the crystal structure of PLC-beta2 illustrates occlusion of the active site by a loop separating the two halves of the catalytic TIM barrel. Removal of this insertion constitutively activates PLC-beta2 without ablating its capacity to be further stimulated by classical G protein modulators. Similar regulation occurs in other PLC members, and a general mechanism of interfacial activation at membranes is presented that provides a unifying framework for PLC activation by diverse stimuli.


    Related Citations: 
    • Crystal structure of Rac1 bound to its effector phospholipase C-beta2
      Jezyk, M.R.,Snyder, J.T.,Gershberg, S.,Worthylake, D.K.,Harden, T.K.,Sondek, J.
      (2006) Nat.Struct.Mol.Biol. 13: 1135


    Organizational Affiliation

    Department of Pharmacology, The University of North Carolina School of Medicine, Chapel Hill, NC 27599, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
1-phosphatidylinositol-4,5-bisphosphate phosphodiesterase beta-2
X
799Homo sapiensGene Names: PLCB2
EC: 3.1.4.11
Find proteins for Q00722 (Homo sapiens)
Go to Gene View: PLCB2
Go to UniProtKB:  Q00722
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CA
Query on CA

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

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.62 Å
  • R-Value Free: 0.213 
  • R-Value Work: 0.196 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 80.404α = 90.00
b = 86.379β = 90.00
c = 147.447γ = 90.00
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
PHASERphasing
REFMACrefinement
PDB_EXTRACTdata extraction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2008-08-12
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance
  • Version 1.2: 2017-10-11
    Type: Refinement description