1GOT

HETEROTRIMERIC COMPLEX OF A GT-ALPHA/GI-ALPHA CHIMERA AND THE GT-BETA-GAMMA SUBUNITS


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.295 
  • R-Value Work: 0.207 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

The 2.0 A crystal structure of a heterotrimeric G protein.

Lambright, D.G.Sondek, J.Bohm, A.Skiba, N.P.Hamm, H.E.Sigler, P.B.

(1996) Nature 379: 311-319

  • DOI: 10.1038/379311a0

  • PubMed Abstract: 
  • The structure of a heterotrimeric G protein reveals the mechanism of the nucleotide-dependent engagement of the alpha and beta gamma subunits that regulates their interaction with receptor and effector molecules. The interaction involves two distinct ...

    The structure of a heterotrimeric G protein reveals the mechanism of the nucleotide-dependent engagement of the alpha and beta gamma subunits that regulates their interaction with receptor and effector molecules. The interaction involves two distinct interfaces and dramatically alters the conformation of the alpha but not of the beta gamma subunits. The location of the known sites for post-translational modification and receptor coupling suggest a plausible orientation with respect to the membrane surface and an activated heptahelical receptor.


    Related Citations: 
    • The 2.2 A Crystal Structure of Transducin-Alpha Complexed with GTP Gamma S
      Noel, J.P.,Hamm, H.E.,Sigler, P.B.
      (1993) Nature 366: 654
    • Crystal Structure of a Ga Protein Beta Gamma Dimer at 2.1A Resolution
      Sondek, J.,Bohm, A.,Lambright, D.G.,Hamm, H.E.,Sigler, P.B.
      (1996) Nature 379: 369
    • Structural Determinants for Activation of the Alpha-Subunit of a Heterotrimeric G Protein
      Lambright, D.G.,Noel, J.P.,Hamm, H.E.,Sigler, P.B.
      (1994) Nature 369: 621
    • Gtpase Mechanism of Gproteins from the 1.7-A Crystal Structure of Transducin Alpha-Gdp-Aif-4
      Sondek, J.,Lambright, D.G.,Noel, J.P.,Hamm, H.E.,Sigler, P.B.
      (1994) Nature 372: 276


    Organizational Affiliation

    Department of Molecular Biophysics and Biochemistry, Yale University, New Haven, Connecticut 06510, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
GT-ALPHA/GI-ALPHA CHIMERA
A
350Bos taurusGene Names: GNAT1
Find proteins for P04695 (Bos taurus)
Go to Gene View: GNAT1
Go to UniProtKB:  P04695
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
GT-BETA
B
340Bos taurusGene Names: GNB1
Find proteins for P62871 (Bos taurus)
Go to Gene View: GNB1
Go to UniProtKB:  P62871
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
GT-GAMMA
G
73Bos taurusGene Names: GNGT1
Find proteins for P02698 (Bos taurus)
Go to Gene View: GNGT1
Go to UniProtKB:  P02698
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GDP
Query on GDP

Download SDF File 
Download CCD File 
G
GUANOSINE-5'-DIPHOSPHATE
C10 H15 N5 O11 P2
QGWNDRXFNXRZMB-UUOKFMHZSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE
A
L-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.295 
  • R-Value Work: 0.207 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 133.400α = 90.00
b = 91.400β = 120.10
c = 83.200γ = 90.00
Software Package:
Software NamePurpose
SCALEPACKdata scaling
X-PLORphasing
DENZOdata reduction
SHELXSphasing
X-PLORrefinement
X-PLORmodel building

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1997-03-12
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance