2Y0R

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

• PDB DOI: https://doi.org/10.2210/pdb2Y0R/pdb

• Classification: MOTOR PROTEIN
• Organism(s): Dictyostelium discoideum
• Expression System: Dictyostelium discoideum
• Mutation(s): Yes 


• Deposited: 2010-12-07 Released: 2011-07-20 
• Deposition Author(s): Preller, M., Bauer, S., Adamek, N., Fujita-Becker, S., Fedorov, R., Geeves, M.A., Manstein, D.J.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.85 Å
• R-Value Free: 
  0.301 (Depositor), 0.310 (DCC) 
• R-Value Work: 
  0.253 (Depositor), 0.260 (DCC) 
• R-Value Observed: 
  0.256 (Depositor) 

Starting Model: experimental

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

• PubMed: 21841195 
• DOI: https://doi.org/10.1074/jbc.M111.265298
• Primary Citation of Related Structures:  
  2Y0R, 2Y8I, 2Y9E


• 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 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.

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Organizational Affiliation: 

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

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 86.38 kDa 
• Atom Count: 6,469 
• Modelled Residue Count: 758 
• Deposited Residue Count: 758 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
MYOSIN-2 HEAVY CHAIN	A [auth X]	758	Dictyostelium discoideum	Mutation(s): 1
UniProt
Find proteins for P08799 (Dictyostelium discoideum) Explore P08799  Go to UniProtKB:  P08799

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.85 Å
• R-Value Free:  0.301 (Depositor), 0.310 (DCC) 
• R-Value Work:  0.253 (Depositor), 0.260 (DCC) 
• R-Value Observed: 0.256 (Depositor) 

Space Group: P 2 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 54.6	α = 90
b = 106	β = 90
c = 178.9	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
XDS	data reduction
XDS	data scaling
AMoRE	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2011-07-20 
Deposition Author(s): Preller, M., Bauer, S., Adamek, N., Fujita-Becker, S., Fedorov, R., Geeves, M.A., Manstein, D.J.

Revision History  

• Version 1.0: 2011-07-20
  Type: Initial release
  
• Version 1.1: 2011-10-12
  Changes: Database references
• Version 1.2: 2018-06-20
  Changes: Advisory, Data collection, Derived calculations
• Version 1.3: 2023-12-20
  Changes: Data collection, Database references, Other, Refinement description