NMR solution structure of the split PH domain from Phospholipase C gamma 2

Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 20 
  • Selection Criteria: 20 structures for lowest energy 

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Rac Regulates Its Effector Phospholipase C{gamma}2 through Interaction with a Split Pleckstrin Homology Domain.

Walliser, C.Retlich, M.Harris, R.Everett, K.L.Josephs, M.B.Vatter, P.Esposito, D.Driscoll, P.C.Katan, M.Gierschik, P.Bunney, T.D.

(2008) J Biol Chem 283: 30351-30362

  • DOI: https://doi.org/10.1074/jbc.M803316200
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    Several isoforms of phospholipase C (PLC) are regulated through interactions with Ras superfamily GTPases, including Rac proteins. Interestingly, of two closely related PLCgamma isoforms, only PLCgamma(2) has previously been shown to be activated by Rac. Here, we explore the molecular basis of this interaction as well as the structural properties of PLCgamma(2) required for activation. Based on reconstitution experiments with isolated PLCgamma variants and Rac2, we show that an unusual pleckstrin homology (PH) domain, designated as the split PH domain (spPH), is both necessary and sufficient to effect activation of PLCgamma(2) by Rac2. We also demonstrate that Rac2 directly binds to PLCgamma(2) as well as to the isolated spPH of this isoform. Furthermore, through the use of NMR spectroscopy and mutational analysis, we determine the structure of spPH, define the structural features of spPH required for Rac interaction, and identify critical amino acid residues at the interaction interface. We further discuss parallels and differences between PLCgamma(1) and PLCgamma(2) and the implications of our findings for their respective signaling roles.

  • Organizational Affiliation

    Institute of Pharmacology and Toxicology, University of Ulm Medical Center, 89070 Ulm, Germany.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
1-phosphatidylinositol-4,5-bisphosphate phosphodiesterase gamma-2124Homo sapiensMutation(s): 1 
Gene Names: PLCG2
UniProt & NIH Common Fund Data Resources
Find proteins for P16885 (Homo sapiens)
Explore P16885 
Go to UniProtKB:  P16885
PHAROS:  P16885
GTEx:  ENSG00000197943 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP16885
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 20 
  • Selection Criteria: 20 structures for lowest energy 

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2008-09-09
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2020-02-19
    Changes: Data collection, Database references, Derived calculations, Other
  • Version 1.3: 2024-05-01
    Changes: Data collection, Database references