4WTH

Ataxin-3 Carboxy Terminal Region - Crystal C2 (triclinic)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.25 Å
  • R-Value Free: 0.250 
  • R-Value Work: 0.202 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

The 2.2-Angstrom resolution crystal structure of the carboxy-terminal region of ataxin-3.

Zhemkov, V.A.Kulminskaya, A.A.Bezprozvanny, I.B.Kim, M.

(2016) FEBS Open Bio 6: 168-178

  • DOI: 10.1002/2211-5463.12029
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • An expansion of polyglutamine (polyQ) sequence in ataxin-3 protein causes spinocerebellar ataxia type 3, an inherited neurodegenerative disorder. The crystal structure of the polyQ-containing carboxy-terminal fragment of human ataxin-3 was solved at ...

    An expansion of polyglutamine (polyQ) sequence in ataxin-3 protein causes spinocerebellar ataxia type 3, an inherited neurodegenerative disorder. The crystal structure of the polyQ-containing carboxy-terminal fragment of human ataxin-3 was solved at 2.2-Å resolution. The Atxn3 carboxy-terminal fragment including 14 glutamine residues adopts both random coil and α-helical conformations in the crystal structure. The polyQ sequence in α-helical structure is stabilized by intrahelical hydrogen bonds mediated by glutamine side chains. The intrahelical hydrogen-bond interactions between glutamine side chains along the axis of the polyQ α-helix stabilize the secondary structure. Analysis of this structure furthers our understanding of the polyQ-structural characteristics that likely underlie the pathogenesis of polyQ-expansion disorders.


    Organizational Affiliation

    Laboratory of Molecular NeurodegenerationSt Petersburg State Polytechnical UniversityRussia; Laboratory of EnzymologyNational Research Center «Kurchatov Institute»B.P. Konstantinov Petersburg Nuclear Physics InstituteGatchinaRussia.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Maltose-binding periplasmic protein, Ataxin-3 chimera
A, B
441Homo sapiensEscherichia coli (strain K12)
This entity is chimeric
Gene Names: ATXN3 (ATX3, MJD, MJD1, SCA3), malE
EC: 3.4.19.12
Find proteins for P54252 (Homo sapiens)
Go to Gene View: ATXN3
Go to UniProtKB:  P54252
Find proteins for P0AEX9 (Escherichia coli (strain K12))
Go to UniProtKB:  P0AEX9
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
MAL
Query on MAL

Download SDF File 
Download CCD File 
A, B
MALTOSE
C12 H22 O11
GUBGYTABKSRVRQ-ASMJPISFSA-N
 Ligand Interaction
ZN
Query on ZN

Download SDF File 
Download CCD File 
A, B
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.25 Å
  • R-Value Free: 0.250 
  • R-Value Work: 0.202 
  • Space Group: P 1
Unit Cell:
Length (Å)Angle (°)
a = 49.096α = 90.00
b = 59.786β = 89.99
c = 77.790γ = 87.50
Software Package:
Software NamePurpose
SCALEPACKdata scaling
REFMACrefinement
HKL-2000data collection
HKL-2000data reduction
Cootmodel building
PHASERphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data

  • Deposited Date: 2014-10-30 
  • Released Date: 2016-03-09 
  • Deposition Author(s): Zhemkov, V.A., Kim, M.

Funding OrganizationCountryGrant Number
National Institutes of Health/National Institute of Neurological Disorders and StrokeUnited StatesR01NS074376
National Institutes of Health/National Institute of Neurological Disorders and StrokeUnited StatesR01NS056224
National Ataxia FoundationUnited StatesTranslational Award
Russian Ministry of Science and EducationRussian Federation17.1360.2014/K
Russian Scientific FundRussian Federation14-25-00024
Russian Ministry of Science and EducationRussian Federation11.G34.31.0056

Revision History 

  • Version 1.0: 2016-03-09
    Type: Initial release
  • Version 1.1: 2016-03-16
    Type: Database references
  • Version 1.2: 2017-09-06
    Type: Author supporting evidence, Derived calculations
  • Version 1.3: 2018-04-18
    Type: Data collection, Database references