2FJU

Activated Rac1 bound to its effector phospholipase C beta 2


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.2 Å
  • R-Value Free: 0.226 
  • R-Value Work: 0.208 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

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: 1135-1140

  • DOI: 10.1038/nsmb1175
  • Also Cited By: 2ZKM

  • PubMed Abstract: 
  • Although diverse signaling cascades require the coordinated regulation of heterotrimeric G proteins and small GTPases, these connections remain poorly understood. We present the crystal structure of the GTPase Rac1 bound to phospholipase C-beta2 (PLC ...

    Although diverse signaling cascades require the coordinated regulation of heterotrimeric G proteins and small GTPases, these connections remain poorly understood. We present the crystal structure of the GTPase Rac1 bound to phospholipase C-beta2 (PLC-beta2), a classic effector of heterotrimeric G proteins. Rac1 engages the pleckstrin-homology (PH) domain of PLC-beta2 to optimize its orientation for substrate membranes. Gbetagamma also engages the PH domain to activate PLC-beta2, and these two activation events are compatible, leading to additive stimulation of phospholipase activity. In contrast to PLC-delta, the PH domain of PLC-beta2 cannot bind phosphoinositides, eliminating this mode of regulation. The structure of the Rac1-PLC-beta2 complex reveals determinants that dictate selectivity of PLC-beta isozymes for Rac GTPases over other Rho-family GTPases, and substitutions within PLC-beta2 abrogate its stimulation by Rac1 but not by Gbetagamma, allowing for functional dissection of this integral signaling node.


    Organizational Affiliation

    Department of Biochemistry and Biophysics The University of North Carolina School of Medicine, Chapel Hill, North Carolina 27599, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Ras-related C3 botulinum toxin substrate 1
A
178Homo sapiensMutation(s): 0 
Gene Names: RAC1 (TC25)
Find proteins for P63000 (Homo sapiens)
Go to Gene View: RAC1
Go to UniProtKB:  P63000
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
1-phosphatidylinositol-4,5-bisphosphate phosphodiesterase beta 2
B
799Homo sapiensMutation(s): 0 
Gene 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 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CA
Query on CA

Download SDF File 
Download CCD File 
B
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
MG
Query on MG

Download SDF File 
Download CCD File 
A
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
GSP
Query on GSP

Download SDF File 
Download CCD File 
A
5'-GUANOSINE-DIPHOSPHATE-MONOTHIOPHOSPHATE
C10 H16 N5 O13 P3 S
XOFLBQFBSOEHOG-UUOKFMHZSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.2 Å
  • R-Value Free: 0.226 
  • R-Value Work: 0.208 
  • Space Group: P 32 2 1
Unit Cell:
Length (Å)Angle (°)
a = 185.822α = 90.00
b = 185.822β = 90.00
c = 93.823γ = 120.00
Software Package:
Software NamePurpose
SHELXmodel building
SHELXphasing
HKL-2000data reduction
SCALEPACKdata scaling
MLPHAREphasing
CNSrefinement
DMphasing
HKL-2000data collection
DMmodel building

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2006-11-21
    Type: Initial release
  • Version 1.1: 2008-05-01
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance