Crystal Structure of AnkB 24 Ankyrin Repeats in Complex with AnkR Autoinhibition Segment

Experimental Data Snapshot

  • Resolution: 3.49 Å
  • R-Value Free: 0.253 
  • R-Value Work: 0.220 
  • R-Value Observed: 0.222 

wwPDB Validation   3D Report Full Report

This is version 1.3 of the entry. See complete history


Structural basis of diverse membrane target recognitions by ankyrins.

Wang, C.Wei, Z.Chen, K.Ye, F.Yu, C.Bennett, V.Zhang, M.

(2014) Elife 3: e04353

  • DOI: https://doi.org/10.7554/eLife.04353
  • Primary Citation of Related Structures:  
    4RLV, 4RLY

  • PubMed Abstract: 

    Ankyrin adaptors together with their spectrin partners coordinate diverse ion channels and cell adhesion molecules within plasma membrane domains and thereby promote physiological activities including fast signaling in the heart and nervous system. Ankyrins specifically bind to numerous membrane targets through their 24 ankyrin repeats (ANK repeats), although the mechanism for the facile and independent evolution of these interactions has not been resolved. Here we report the structures of ANK repeats in complex with an inhibitory segment from the C-terminal regulatory domain and with a sodium channel Nav1.2 peptide, respectively, showing that the extended, extremely conserved inner groove spanning the entire ANK repeat solenoid contains multiple target binding sites capable of accommodating target proteins with very diverse sequences via combinatorial usage of these sites. These structures establish a framework for understanding the evolution of ankyrins' membrane targets, with implications for other proteins containing extended ANK repeat domains.

  • Organizational Affiliation

    Division of Life Science, State Key Laboratory of Molecular Neuroscience, Hong Kong University of Science and Technology, Hong Kong, Hong Kong.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Ankyrin-1, Ankyrin-2910Mus musculusHomo sapiens
This entity is chimeric
Mutation(s): 0 
Gene Names: Ank1ANK2
UniProt & NIH Common Fund Data Resources
Find proteins for Q02357 (Mus musculus)
Explore Q02357 
Go to UniProtKB:  Q02357
Find proteins for Q01484 (Homo sapiens)
Explore Q01484 
Go to UniProtKB:  Q01484
PHAROS:  Q01484
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupsQ02357Q01484
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 3.49 Å
  • R-Value Free: 0.253 
  • R-Value Work: 0.220 
  • R-Value Observed: 0.222 
  • Space Group: H 3 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 179.685α = 90
b = 179.685β = 90
c = 304.856γ = 120
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
PDB_EXTRACTdata extraction
ADSCdata collection
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

View Full Validation Report

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2014-11-26
    Type: Initial release
  • Version 1.1: 2015-05-20
    Changes: Database references
  • Version 1.2: 2017-08-02
    Changes: Source and taxonomy
  • Version 1.3: 2017-11-22
    Changes: Refinement description