Biological Assembly 1  

 3D View: Structure | 1D-3D View | Electron Density | Validation Report

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

Biological assembly 1 assigned by authors.

Biological Assembly 2  

 3D View: Structure | 1D-3D View | Electron Density | Validation Report

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

Biological assembly 2 assigned by authors.

Biological Assembly 3  

 3D View: Structure | 1D-3D View | Electron Density | Validation Report

Global Symmetry: Cyclic - C2  (3D View)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 3 generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 87.97 kDa 
• Atom Count: 5623 
• Modelled Residue Count: 672 
• Deposited Residue Count: 772 
• Unique protein chains: 1

3MMI

Crystal structure of the globular tail of Myo4p

• PDB DOI: 10.2210/pdb3MMI/pdb

• Classification: MOTOR PROTEIN
• Organism(s): Saccharomyces cerevisiae
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2010-04-19 Released: 2010-05-12 
• Deposition Author(s): Heuck, A., Niessing, D.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.30 Å
• R-Value Free: 0.287 
• R-Value Work: 0.254 
• R-Value Observed: 0.254 

Literature

The structure of the Myo4p globular tail and its function in ASH1 mRNA localization.

Heuck, A., Fetka, I., Brewer, D.N., Huls, D., Munson, M., Jansen, R.P., Niessing, D.

(2010) J Cell Biol 189: 497-510

• PubMed: 20439999 
• DOI: 10.1083/jcb.201002076
• Primary Citation of Related Structures:  
  3MMI


• PubMed Abstract: 
  

Type V myosin (MyoV)-dependent transport of cargo is an essential process in eukaryotes. Studies on yeast and vertebrate MyoV showed that their globular tails mediate binding to the cargo complexes. In Saccharomyces cerevisiae, the MyoV motor Myo4p interacts with She3p to localize asymmetric synthesis of HO 1 (ASH1) mRNA into the bud of dividing cells. A recent study showed that localization of GFP-MS2-tethered ASH1 particles does not require the Myo4p globular tail, challenging the supposed role of this domain. We assessed ASH1 mRNA and Myo4p distribution more directly and found that their localization is impaired in cells expressing globular tail-lacking Myo4p. In vitro studies further show that the globular tail together with a more N-terminal linker region is required for efficient She3p binding. We also determined the x-ray structure of the Myo4p globular tail and identify a conserved surface patch important for She3p binding. The structure shows pronounced similarities to membrane-tethering complexes and indicates that Myo4p may not undergo auto-inhibition of its motor domain.

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Organizational Affiliation: 

Institute of Structural Biology, Helmholtz Zentrum München, German Research Center for Environmental Health, Munich, Germany.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Myosin-4	A, B	386	Saccharomyces cerevisiae	Mutation(s): 0  Gene Names: FUN22, MYO4, SHE1, YAL029C
UniProt
Find proteins for P32492 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c)) Explore P32492  Go to UniProtKB:  P32492

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.30 Å
• R-Value Free: 0.287 
• R-Value Work: 0.254 
• R-Value Observed: 0.254 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 43.476	α = 90
b = 120.989	β = 90
c = 157.683	γ = 90

Software Package:

Software Name	Purpose
ADSC	data collection
SHELXD	phasing
REFMAC	refinement
MOSFLM	data reduction
SCALA	data scaling

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2010-04-19 
• Released Date: 2010-05-12 
Deposition Author(s): Heuck, A., Niessing, D.

Revision History  

• Version 1.0: 2010-05-12
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Version format compliance