5EUZ

Rat prestin STAS domain in complex with iodide


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.403 Å
  • R-Value Free: 0.221 
  • R-Value Work: 0.188 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

The STAS domain of mammalian SLC26A5 prestin harbours an anion-binding site.

Lolli, G.Pasqualetto, E.Costanzi, E.Bonetto, G.Battistutta, R.

(2016) Biochem.J. 473: 365-370

  • DOI: 10.1042/BJ20151089
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Prestin is a unique ATP- and Ca(2+)-independent molecular motor with piezoelectric characteristics responsible for the electromotile properties of mammalian cochlear outer hair cells, i.e. the capacity of these cells to modify their length in respons ...

    Prestin is a unique ATP- and Ca(2+)-independent molecular motor with piezoelectric characteristics responsible for the electromotile properties of mammalian cochlear outer hair cells, i.e. the capacity of these cells to modify their length in response to electric stimuli. This 'electromotility' is at the basis of the exceptional sensitivity and frequency selectivity distinctive of mammals. Prestin belongs to the SLC26 (solute carrier 26) family of anion transporters and needs anions to function properly, particularly Cl(-). In the present study, using X-ray crystallography we reveal that the STAS (sulfate transporter and anti-sigma factor antagonist) domain of mammalian prestin, considered an 'incomplete' transporter, harbours an unanticipated anion-binding site. In parallel, we present the first crystal structure of a prestin STAS domain from a non-mammalian vertebrate prestin (chicken) that behaves as a 'full' transporter. Notably, in chicken STAS, the anion-binding site is lacking because of a local structural rearrangement, indicating that the presence of the STAS anion-binding site is exclusive to mammalian prestin.


    Related Citations: 
    • Structure of the Cytosolic Portion of the Motor Protein Prestin and Functional Role of the STAS Domain in SLC26/SulP Anion Transporters
      Pasqualetto, E.,Aiello, R.,Gesiot, L.,Bonetto, G.,Bellanda, M.,Battistutta, R.
      (2010) J.Mol.Biol. 400: 448


    Organizational Affiliation

    Department of Chemical Sciences, University of Padua, via Marzolo 1, 35131 Padua, Italy graziano.lolli@unipd.it roberto.battistutta@unipd.it.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Prestin,Prestin
A
143Rattus norvegicusMutation(s): 0 
Gene Names: Slc26a5 (Pres)
Find proteins for Q9EPH0 (Rattus norvegicus)
Go to UniProtKB:  Q9EPH0
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
IOD
Query on IOD

Download SDF File 
Download CCD File 
A
IODIDE ION
I
XMBWDFGMSWQBCA-UHFFFAOYSA-M
 Ligand Interaction
EDO
Query on EDO

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Download CCD File 
A
1,2-ETHANEDIOL
ETHYLENE GLYCOL
C2 H6 O2
LYCAIKOWRPUZTN-UHFFFAOYSA-N
 Ligand Interaction
PGE
Query on PGE

Download SDF File 
Download CCD File 
A
TRIETHYLENE GLYCOL
C6 H14 O4
ZIBGPFATKBEMQZ-UHFFFAOYSA-N
 Ligand Interaction
PEG
Query on PEG

Download SDF File 
Download CCD File 
A
DI(HYDROXYETHYL)ETHER
C4 H10 O3
MTHSVFCYNBDYFN-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE
A
L-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.403 Å
  • R-Value Free: 0.221 
  • R-Value Work: 0.188 
  • Space Group: P 31 2 1
Unit Cell:
Length (Å)Angle (°)
a = 61.911α = 90.00
b = 61.911β = 90.00
c = 66.490γ = 120.00
Software Package:
Software NamePurpose
Aimlessdata scaling
XDSdata reduction
PDB_EXTRACTdata extraction
PHENIXrefinement
PHASERphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
European Community's Seventh Framework Programme (FP7/2007-2013) under BioStruct-Xgrant agreement Number 283570
Fondazione Cassa di Risparmio di Padova e RovigoItalyProgetto di Eccellenza

Revision History 

  • Version 1.0: 2015-12-16
    Type: Initial release
  • Version 1.1: 2016-02-17
    Type: Database references