7WK7

Mouse Pendrin bound bicarbonate in inward state


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.49 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Asymmetric pendrin homodimer reveals its molecular mechanism as anion exchanger.

Liu, Q.Zhang, X.Huang, H.Chen, Y.Wang, F.Hao, A.Zhan, W.Mao, Q.Hu, Y.Han, L.Sun, Y.Zhang, M.Liu, Z.Li, G.L.Zhang, W.Shu, Y.Sun, L.Chen, Z.

(2023) Nat Commun 14: 3012-3012

  • DOI: https://doi.org/10.1038/s41467-023-38303-0
  • Primary Citation of Related Structures:  
    7WK1, 7WK7, 7WL2, 7WL7, 7WL8, 7WL9, 7WLA, 7WLB, 7WLE

  • PubMed Abstract: 

    Pendrin (SLC26A4) is an anion exchanger expressed in the apical membranes of selected epithelia. Pendrin ablation causes Pendred syndrome, a genetic disorder associated with sensorineural hearing loss, hypothyroid goiter, and reduced blood pressure. However its molecular structure has remained unknown, limiting our understanding of the structural basis of transport. Here, we determine the cryo-electron microscopy structures of mouse pendrin with symmetric and asymmetric homodimer conformations. The asymmetric homodimer consists of one inward-facing protomer and the other outward-facing protomer, representing coincident uptake and secretion- a unique state of pendrin as an electroneutral exchanger. The multiple conformations presented here provide an inverted alternate-access mechanism for anion exchange. The structural and functional data presented here disclose the properties of an anion exchange cleft and help understand the importance of disease-associated variants, which will shed light on the pendrin exchange mechanism.


  • Organizational Affiliation

    The Fifth People's Hospital of Shanghai and Institutes of Biomedical Sciences, Fudan University, Shanghai, 200032, China.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Pendrin
A, B
780Mus musculusMutation(s): 0 
Gene Names: Slc26a4Pds
Membrane Entity: Yes 
UniProt
Find proteins for Q9R155 (Mus musculus)
Explore Q9R155 
Go to UniProtKB:  Q9R155
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9R155
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.49 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Not funded81900729

Revision History  (Full details and data files)

  • Version 1.0: 2023-05-17
    Type: Initial release
  • Version 1.1: 2023-08-16
    Changes: Data collection, Database references