5EUW

Rat prestin STAS domain in complex with nitrate


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.81 Å
  • R-Value Free: 0.190 
  • R-Value Work: 0.164 
  • R-Value Observed: 0.166 

Starting Model: experimental
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wwPDB Validation   3D Report Full Report


This is version 1.2 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: https://doi.org/10.1042/BJ20151089
  • Primary Citation of Related Structures:  
    5EUS, 5EUU, 5EUW, 5EUX, 5EUZ, 5EZB

  • 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 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.


  • 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:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Prestin,Prestin143Rattus norvegicusMutation(s): 0 
Gene Names: Slc26a5Pres
UniProt
Find proteins for Q9EPH0 (Rattus norvegicus)
Explore Q9EPH0 
Go to UniProtKB:  Q9EPH0
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9EPH0
Sequence Annotations
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  • Reference Sequence
Small Molecules
Ligands 4 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
PG4
Query on PG4

Download Ideal Coordinates CCD File 
F [auth A]TETRAETHYLENE GLYCOL
C8 H18 O5
UWHCKJMYHZGTIT-UHFFFAOYSA-N
PEG
Query on PEG

Download Ideal Coordinates CCD File 
G [auth A],
H [auth A]
DI(HYDROXYETHYL)ETHER
C4 H10 O3
MTHSVFCYNBDYFN-UHFFFAOYSA-N
EDO
Query on EDO

Download Ideal Coordinates CCD File 
C [auth A],
D [auth A],
E [auth A]
1,2-ETHANEDIOL
C2 H6 O2
LYCAIKOWRPUZTN-UHFFFAOYSA-N
NO3
Query on NO3

Download Ideal Coordinates CCD File 
B [auth A]NITRATE ION
N O3
NHNBFGGVMKEFGY-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.81 Å
  • R-Value Free: 0.190 
  • R-Value Work: 0.164 
  • R-Value Observed: 0.166 
  • Space Group: P 31 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 62.223α = 90
b = 62.223β = 90
c = 66.873γ = 120
Software Package:
Software NamePurpose
PHENIXrefinement
PDB_EXTRACTdata extraction
Aimlessdata scaling
PHASERphasing
XDSdata reduction

Structure Validation

View Full Validation Report



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  (Full details and data files)

  • Version 1.0: 2015-12-16
    Type: Initial release
  • Version 1.1: 2016-02-17
    Changes: Database references
  • Version 1.2: 2024-01-10
    Changes: Data collection, Database references, Refinement description