2Y9E

Structural basis for the allosteric interference of myosin function by mutants G680A and G680V of Dictyostelium myosin-2


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.397 Å
  • R-Value Free: 0.372 
  • R-Value Work: 0.282 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structural Basis for the Allosteric Interference of Myosin Function by Reactive Thiol Region Mutations G680A and G680V.

Preller, M.Bauer, S.Adamek, N.Fujita-Becker, S.Fedorov, R.Geeves, M.A.Manstein, D.J.

(2011) J.Biol.Chem. 286: 35051

  • DOI: 10.1074/jbc.M111.265298
  • Primary Citation of Related Structures:  2Y0R, 2Y8I

  • PubMed Abstract: 
  • The cold-sensitive single-residue mutation of glycine 680 in the reactive thiol region of Dictyostelium discoideum myosin-2 or the corresponding conserved glycine in other myosin isoforms has been reported to interfere with motor function. Here we pr ...

    The cold-sensitive single-residue mutation of glycine 680 in the reactive thiol region of Dictyostelium discoideum myosin-2 or the corresponding conserved glycine in other myosin isoforms has been reported to interfere with motor function. Here we present the x-ray structures of myosin motor domain mutants G680A in the absence and presence of nucleotide as well as the apo structure of mutant G680V. Our results show that the Gly-680 mutations lead to uncoupling of the reactive thiol region from the surrounding structural elements. Structural and functional data indicate that the mutations induce the preferential population of a state that resembles the ADP-bound state. Moreover, the Gly-680 mutants display greatly reduced dynamic properties, which appear to be related to the recovery of myosin motor function at elevated temperatures.


    Organizational Affiliation

    Institut für Biophysikalische Chemie, Medizinische Hochschule Hannover, Carl-Neuberg-Strasse 1, 30625 Hannover, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
MYOSIN-2
X
758Dictyostelium discoideumGene Names: mhcA
Find proteins for P08799 (Dictyostelium discoideum)
Go to UniProtKB:  P08799
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.397 Å
  • R-Value Free: 0.372 
  • R-Value Work: 0.282 
  • Space Group: P 2 21 21
Unit Cell:
Length (Å)Angle (°)
a = 55.000α = 90.00
b = 105.800β = 90.00
c = 180.500γ = 90.00
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata scaling
AMoREphasing
XDSdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2011-07-20
    Type: Initial release
  • Version 1.1: 2011-10-12
    Type: Database references