PLCg2 Split Pleckstrin Homology (PH) Domain

Experimental Data Snapshot

  • Resolution: 2.80 Å
  • R-Value Free: 0.352 
  • R-Value Work: 0.303 
  • R-Value Observed: 0.306 

Starting Model: experimental
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wwPDB Validation   3D Report Full Report

This is version 1.4 of the entry. See complete history


Structural Insights Into Formation of an Active Signaling Complex between Rac and Phospholipase C Gamma 2.

Bunney, T.D.Opaleye, O.Roe, S.M.Vatter, P.Baxendale, R.W.Walliser, C.Everett, K.L.Josephs, M.B.Christow, C.Rodrigues-Lima, F.Gierschik, P.Pearl, L.H.Katan, M.

(2009) Mol Cell 34: 223

  • DOI: https://doi.org/10.1016/j.molcel.2009.02.023
  • Primary Citation of Related Structures:  
    2W2T, 2W2V, 2W2W, 2W2X

  • PubMed Abstract: 

    Rho family GTPases are important cellular switches and control a number of physiological functions. Understanding the molecular basis of interaction of these GTPases with their effectors is crucial in understanding their functions in the cell. Here we present the crystal structure of the complex of Rac2 bound to the split pleckstrin homology (spPH) domain of phospholipase C-gamma(2) (PLCgamma(2)). Based on this structure, we illustrate distinct requirements for PLCgamma(2) activation by Rac and EGF and generate Rac effector mutants that specifically block activation of PLCgamma(2), but not the related PLCbeta(2) isoform. Furthermore, in addition to the complex, we report the crystal structures of free spPH and Rac2 bound to GDP and GTPgammaS. These structures illustrate a mechanism of conformational switches that accompany formation of signaling active complexes and highlight the role of effector binding as a common feature of Rac and Cdc42 interactions with a variety of effectors.

  • Organizational Affiliation

    Section of Cell and Molecular Biology , The Institute of Cancer Research, London, UK. tom.bunney@icr.ac.uk

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
A, B, C, D, E
A, B, C, D, E, F, G, H, I, J, K, L
124Homo sapiensMutation(s): 1 
UniProt & NIH Common Fund Data Resources
Find proteins for P16885 (Homo sapiens)
Explore P16885 
Go to UniProtKB:  P16885
GTEx:  ENSG00000197943 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP16885
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 2.80 Å
  • R-Value Free: 0.352 
  • R-Value Work: 0.303 
  • R-Value Observed: 0.306 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 92.216α = 90
b = 106.017β = 90
c = 194.097γ = 90
Software Package:
Software NamePurpose
MOSFLMdata reduction
SCALAdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2009-05-05
    Type: Initial release
  • Version 1.1: 2011-05-08
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2019-05-15
    Changes: Data collection, Experimental preparation, Other
  • Version 1.4: 2023-12-13
    Changes: Data collection, Database references, Other, Refinement description