4GNK

Crystal structure of Galphaq in complex with full-length human PLCbeta3


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 4 Å
  • R-Value Free: 0.255 
  • R-Value Work: 0.214 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Full-length G alpha (q)-phospholipase C-beta 3 structure reveals interfaces of the C-terminal coiled-coil domain.

Lyon, A.M.Dutta, S.Boguth, C.A.Skiniotis, G.Tesmer, J.J.

(2013) Nat.Struct.Mol.Biol. 20: 355-362

  • DOI: 10.1038/nsmb.2497

  • PubMed Abstract: 
  • Phospholipase C-β (PLCβ) is directly activated by Gαq, but the molecular basis for how its distal C-terminal domain (CTD) contributes to maximal activity is poorly understood. Herein we present both the crystal structure and cryo-EM three-dimensional ...

    Phospholipase C-β (PLCβ) is directly activated by Gαq, but the molecular basis for how its distal C-terminal domain (CTD) contributes to maximal activity is poorly understood. Herein we present both the crystal structure and cryo-EM three-dimensional reconstructions of human full-length PLCβ3 in complex with mouse Gαq. The distal CTD forms an extended monomeric helical bundle consisting of three antiparallel segments with structural similarity to membrane-binding bin-amphiphysin-Rvs (BAR) domains. Sequence conservation of the distal CTD suggests putative membrane and protein interaction sites, the latter of which bind the N-terminal helix of Gαq in both the crystal structure and cryo-EM reconstructions. Functional analysis suggests that the distal CTD has roles in membrane targeting and in optimizing the orientation of the catalytic core at the membrane for maximal rates of lipid hydrolysis.


    Organizational Affiliation

    Life Sciences Institute, University of Michigan, Ann Arbor, Michigan, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Guanine nucleotide-binding protein G(q) subunit alpha
A, C
353Mus musculusGene Names: Gnaq
Find proteins for P21279 (Mus musculus)
Go to UniProtKB:  P21279
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
1-phosphatidylinositol 4,5-bisphosphate phosphodiesterase beta-3
B, D
1235Homo sapiensGene Names: PLCB3
EC: 3.1.4.11
Find proteins for Q01970 (Homo sapiens)
Go to Gene View: PLCB3
Go to UniProtKB:  Q01970
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
1-phosphatidylinositol 4,5-bisphosphate phosphodiesterase beta-3
E
259Homo sapiensGene Names: PLCB3
EC: 3.1.4.11
Find proteins for Q01970 (Homo sapiens)
Go to Gene View: PLCB3
Go to UniProtKB:  Q01970
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GDP
Query on GDP

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Download CCD File 
A, C
GUANOSINE-5'-DIPHOSPHATE
C10 H15 N5 O11 P2
QGWNDRXFNXRZMB-UUOKFMHZSA-N
 Ligand Interaction
CA
Query on CA

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Download CCD File 
B, D
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
ALF
Query on ALF

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Download CCD File 
A, C
TETRAFLUOROALUMINATE ION
Al F4
UYOMQIYKOOHAMK-UHFFFAOYSA-J
 Ligand Interaction
MG
Query on MG

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Download CCD File 
A, C
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 4 Å
  • R-Value Free: 0.255 
  • R-Value Work: 0.214 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 91.423α = 90.00
b = 188.845β = 90.00
c = 293.857γ = 90.00
Software Package:
Software NamePurpose
PHASERphasing
HKL-2000data collection
SCALEPACKdata scaling
REFMACrefinement
DENZOdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-02-06
    Type: Initial release
  • Version 1.1: 2013-09-04
    Type: Database references