2JU4

NMR structure of the gamma subunit of cGMP phosphodiesterase


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 100 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Intrinsically disordered gamma-subunit of cGMP phosphodiesterase encodes functionally relevant transient secondary and tertiary structure.

Song, J.Guo, L.W.Muradov, H.Artemyev, N.O.Ruoho, A.E.Markley, J.L.

(2008) Proc.Natl.Acad.Sci.USA 105: 1505-1510

  • DOI: 10.1073/pnas.0709558105

  • PubMed Abstract: 
  • The retinal phosphodiesterase (PDE6) inhibitory gamma-subunit (PDEgamma) plays a central role in vertebrate phototransduction through alternate interactions with the catalytic alphabeta-subunits of PDE6 and the alpha-subunit of transducin (alpha(t)). ...

    The retinal phosphodiesterase (PDE6) inhibitory gamma-subunit (PDEgamma) plays a central role in vertebrate phototransduction through alternate interactions with the catalytic alphabeta-subunits of PDE6 and the alpha-subunit of transducin (alpha(t)). Detailed structural analysis of PDEgamma has been hampered by its intrinsic disorder. We present here the NMR solution structure of PDEgamma, which reveals a loose fold with transient structural features resembling those seen previously in the x-ray structure of PDEgamma(46-87) when bound to alpha(t) in the transition-state complex. NMR mapping of the interaction between PDEgamma(46-87) and the chimeric PDE5/6 catalytic domain confirmed that C-terminal residues 74-87 of PDEgamma are involved in the association and demonstrated that its W70 indole group, which is critical for subsequent binding to alpha(t), is left free at this stage. These results indicate that the interaction between PDEgamma and alpha(t) during the phototransduction cascade involves the selection of preconfigured transient conformations.


    Organizational Affiliation

    Center for Eukaryotic Structural Genomics, Department of Biochemistry, University of Wisconsin, Madison, WI 53706-1544, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Retinal rod rhodopsin-sensitive cGMP 3',5'-cyclic phosphodiesterase subunit gamma
A
87Bos taurusMutation(s): 9 
Gene Names: PDE6G (PDEG)
EC: 3.1.4.35
Find proteins for P04972 (Bos taurus)
Go to Gene View: PDE6G
Go to UniProtKB:  P04972
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
RCY
Query on RCY

Download SDF File 
Download CCD File 
A
(3'R)-1'-oxyl-2',2',5',5'-tetramethyl-1,3'-bipyrrolidine-2,5-dione
3-Maleimido-PROXYL (bound form)
C12 H19 N2 O3
BGLGHMPQDJUKJG-MRVPVSSYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 100 
  • Selection Criteria: structures with the lowest energy 

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2007-10-16
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance
  • Version 1.2: 2012-02-15
    Type: Structure summary
  • Version 1.3: 2012-02-22
    Type: Non-polymer description