Structure of the TM domain

Experimental Data Snapshot

  • Resolution: 3.60 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report

This is version 1.2 of the entry. See complete history


Structure and mechanism of the cation-chloride cotransporter NKCC1.

Chew, T.A.Orlando, B.J.Zhang, J.Latorraca, N.R.Wang, A.Hollingsworth, S.A.Chen, D.H.Dror, R.O.Liao, M.Feng, L.

(2019) Nature 572: 488-492

  • DOI: https://doi.org/10.1038/s41586-019-1438-2
  • Primary Citation of Related Structures:  
    6NPH, 6NPJ, 6NPK, 6NPL

  • PubMed Abstract: 

    Cation-chloride cotransporters (CCCs) mediate the electroneutral transport of chloride, potassium and/or sodium across the membrane. They have critical roles in regulating cell volume, controlling ion absorption and secretion across epithelia, and maintaining intracellular chloride homeostasis. These transporters are primary targets for some of the most commonly prescribed drugs. Here we determined the cryo-electron microscopy structure of the Na-K-Cl cotransporter NKCC1, an extensively studied member of the CCC family, from Danio rerio. The structure defines the architecture of this protein family and reveals how cytosolic and transmembrane domains are strategically positioned for communication. Structural analyses, functional characterizations and computational studies reveal the ion-translocation pathway, ion-binding sites and key residues for transport activity. These results provide insights into ion selectivity, coupling and translocation, and establish a framework for understanding the physiological functions of CCCs and interpreting disease-related mutations.

  • Organizational Affiliation

    Department of Molecular and Cellular Physiology, Stanford University School of Medicine, Stanford, CA, USA.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Solute carrier family 12 (sodium/potassium/chloride transporter), member 2
A, B
472Danio rerioMutation(s): 0 
Gene Names: slc12a2
Membrane Entity: Yes 
Find proteins for A0A0G2KTI4 (Danio rerio)
Explore A0A0G2KTI4 
Go to UniProtKB:  A0A0G2KTI4
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupA0A0G2KTI4
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 3.60 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2019-07-31
    Type: Initial release
  • Version 1.1: 2019-08-14
    Changes: Data collection, Database references
  • Version 1.2: 2019-08-28
    Changes: Data collection, Database references