1OMV

non-myristoylated bovine recoverin (E85Q mutant) with calcium bound to EF-hand 3


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.9 Å
  • R-Value Free: 0.249 
  • R-Value Work: 0.240 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Impact of N-terminal myristoylation on the Ca2+-dependent conformational transition in recoverin

Weiergraber, O.H.Senin, I.I.Philippov, P.P.Granzin, J.Koch, K.-W.

(2003) J.Biol.Chem. 278: 22972-22979

  • DOI: 10.1074/jbc.M300447200
  • Primary Citation of Related Structures:  1OMR

  • PubMed Abstract: 
  • Recoverin is a Ca2+-regulated signal transduction modulator found in vertebrate retina that has been shown to undergo dramatic conformational changes upon Ca2+ binding to its two functional EF-hand motifs. To elucidate the differential impact of the ...

    Recoverin is a Ca2+-regulated signal transduction modulator found in vertebrate retina that has been shown to undergo dramatic conformational changes upon Ca2+ binding to its two functional EF-hand motifs. To elucidate the differential impact of the N-terminal myristoylation as well as occupation of the two Ca2+ binding sites on recoverin structure and function, we have investigated a non-myristoylated E85Q mutant exhibiting virtually no Ca2+ binding to EF-2. Crystal structures of the mutant protein as well as the non-myristoylated wild-type have been determined. Although the non-myristoylated E85Q mutant does not display any functional activity, its three-dimensional structure in the presence of Ca2+ resembles the myristoylated wild-type with two Ca2+ but is quite dissimilar from the myristoylated E85Q mutant. We conclude that the N-terminal myristoyl modification significantly stabilizes the conformation of the Ca2+-free protein (i.e. the T conformation) during the stepwise transition toward the fully Ca2+-occupied state. On the basis of these observations, a refined model for the role of the myristoyl group as an intrinsic allosteric modulator is proposed.


    Organizational Affiliation

    Institut für Biologische Informationsverarbeitung IBI-2 (Biologische Strukturforschung), Jülich, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
recoverin
A
201Bos taurusGene Names: RCVRN (RCV1)
Find proteins for P21457 (Bos taurus)
Go to Gene View: RCVRN
Go to UniProtKB:  P21457
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CA
Query on CA

Download SDF File 
Download CCD File 
A
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.9 Å
  • R-Value Free: 0.249 
  • R-Value Work: 0.240 
  • Space Group: I 4
Unit Cell:
Length (Å)Angle (°)
a = 84.333α = 90.00
b = 84.333β = 90.00
c = 58.809γ = 90.00
Software Package:
Software NamePurpose
MOSFLMdata reduction
CNSphasing
CCP4data scaling
SCALAdata scaling
CNSrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2003-11-25
    Type: Initial release
  • Version 1.1: 2008-04-29
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Derived calculations, Version format compliance