2TRC

PHOSDUCIN/TRANSDUCIN BETA-GAMMA COMPLEX


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.40 Å
  • R-Value Free: 0.277 
  • R-Value Work: 0.190 
  • R-Value Observed: 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

  • DOI: 10.1016/s0092-8674(00)81376-8
  • Primary Citation of Related Structures:  
    2TRC

  • 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:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
TRANSDUCINB340Bos taurusMutation(s): 0 
Gene Names: GNB1
Find proteins for P62871 (Bos taurus)
Explore P62871 
Go to UniProtKB:  P62871
Protein Feature View
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
TRANSDUCING68Bos taurusMutation(s): 0 
Gene Names: GNGT1
Find proteins for P02698 (Bos taurus)
Explore P02698 
Go to UniProtKB:  P02698
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
PHOSDUCINP217Rattus norvegicusMutation(s): 5 
Gene Names: PdcRpr1
Find proteins for P20942 (Rattus norvegicus)
Explore P20942 
Go to UniProtKB:  P20942
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GD
Query on GD

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

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.40 Å
  • R-Value Free: 0.277 
  • R-Value Work: 0.190 
  • R-Value Observed: 0.190 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 75.7α = 90
b = 88.51β = 90
c = 98.87γ = 90
Software Package:
Software NamePurpose
X-PLORrefinement
X-PLORmodel building
SHELXrefinement
SHELXmodel building
DENZOdata reduction
SCALEPACKdata scaling
SHELXphasing
X-PLORphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

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