2TRC

PHOSDUCIN/TRANSDUCIN BETA-GAMMA COMPLEX


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.4 Å
  • R-Value Free: 0.277 
  • R-Value Work: 0.190 

wwPDB Validation 3D Report Full Report


This is version 1.4 of the entry. See complete history

Literature

Crystal structure at 2.4 angstroms resolution of the complex of transducin betagamma and its regulator, phosducin.

Gaudet, R.Bohm, A.Sigler, P.B.

(1996) Cell 87: 577-588


  • PubMed Abstract: 
  • The crystal structure of transducin's betagamma subunits complexed with phosducin, which regulates Gtbetagamma activity, has been solved to 2.4 angstroms resolution. Phosducin has two domains that wrap around Gtbetagamma to form an extensive interfac ...

    The crystal structure of transducin's betagamma subunits complexed with phosducin, which regulates Gtbetagamma activity, has been solved to 2.4 angstroms resolution. Phosducin has two domains that wrap around Gtbetagamma to form an extensive interface. The N-terminal domain binds loops on the "top" Gtbeta surface, overlapping the Gtalpha binding surface, explaining how phosducin blocks Gtbetagamma's interaction with Gtalpha. The C-terminal domain shows structural homology to thioredoxin and binds the outer strands of Gtbeta's seventh and first blades in a manner likely to disrupt Gtbetagamma's normal orientation relative to the membrane and receptor. Phosducin's Ser-73, which when phosphorylated inhibits phosducin's function, points away from Gtbetagamma, toward a large flexible loop. Thus phosphorylation is not likely to affect the interface directly, but rather indirectly through an induced conformational change.


    Related Citations: 
    • 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


    Organizational Affiliation

    Department of Molecular Biophysics and Biochemistry, Howard Hughes Medical Institute, Yale University, New Haven, Connecticut 06511, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
TRANSDUCIN
B
340Bos taurusMutation(s): 0 
Gene Names: GNB1
Find proteins for P62871 (Bos taurus)
Go to Gene View: GNB1
Go to UniProtKB:  P62871
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
TRANSDUCIN
G
68Bos taurusMutation(s): 0 
Gene Names: GNGT1
Find proteins for P02698 (Bos taurus)
Go to Gene View: GNGT1
Go to UniProtKB:  P02698
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
PHOSDUCIN
P
217Rattus norvegicusMutation(s): 0 
Gene Names: Pdc (Rpr1)
Find proteins for P20942 (Rattus norvegicus)
Go to UniProtKB:  P20942
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GD
Query on GD

Download SDF File 
Download CCD File 
B, P
GADOLINIUM ATOM
Gd
UIWYJDYFSGRHKR-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE
P
L-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.4 Å
  • R-Value Free: 0.277 
  • R-Value Work: 0.190 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 75.700α = 90.00
b = 88.510β = 90.00
c = 98.870γ = 90.00
Software Package:
Software NamePurpose
X-PLORmodel building
SHELXrefinement
SHELXmodel building
X-PLORrefinement
DENZOdata reduction
SHELXphasing
X-PLORphasing
SCALEPACKdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1997-06-05
    Type: Initial release
  • Version 1.1: 2008-03-03
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2019-07-17
    Type: Data collection, Derived calculations, Other, Refinement description
  • Version 1.4: 2019-08-14
    Type: Data collection