5YAY

Crystal structure of KANK1/KIF21A complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.55 Å
  • R-Value Free: 0.200 
  • R-Value Work: 0.183 
  • R-Value Observed: 0.184 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Structural insights into ankyrin repeat-mediated recognition of the kinesin motor protein KIF21A by KANK1, a scaffold protein in focal adhesion.

Pan, W.Sun, K.Tang, K.Xiao, Q.Ma, C.Yu, C.Wei, Z.

(2018) J Biol Chem 293: 1944-1956

  • DOI: 10.1074/jbc.M117.815779
  • Primary Citation of Related Structures:  
    5YAZ, 5YAY

  • PubMed Abstract: 
  • Kidney ankyrin repeat-containing proteins (KANK1/2/3/4) belong to a family of scaffold proteins, playing critical roles in cytoskeleton organization, cell polarity, and migration. Mutations in KANK proteins are implicated in cancers and genetic diseases, such as nephrotic syndrome ...

    Kidney ankyrin repeat-containing proteins (KANK1/2/3/4) belong to a family of scaffold proteins, playing critical roles in cytoskeleton organization, cell polarity, and migration. Mutations in KANK proteins are implicated in cancers and genetic diseases, such as nephrotic syndrome. KANK proteins can bind various target proteins through different protein regions, including a highly conserved ankyrin repeat domain (ANKRD). However, the molecular basis for target recognition by the ANKRD remains elusive. In this study, we solved a high-resolution crystal structure of the ANKRD of KANK1 in complex with a short sequence of the motor protein kinesin family member 21A (KIF21A), revealing that the highly specific target-binding mode of the ANKRD involves combinatorial use of two interfaces. Mutations in either interface disrupted the KANK1-KIF21A interaction. Cellular immunofluorescence localization analysis indicated that binding-deficient mutations block recruitment of KIF21A to focal adhesions by KANK1. In conclusion, our structural study provides mechanistic explanations for the ANKRD-mediated recognition of KIF21A and for many disease-related mutations identified in human KANK proteins.


    Organizational Affiliation

    From the Department of Biology, Southern University of Science and Technology, 518055 Shenzhen, China, weizy@sustc.edu.cn.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
KN motif and ankyrin repeat domains 1A257Mus musculusMutation(s): 0 
Gene Names: Kank1
UniProt & NIH Common Fund Data Resources
Find proteins for E9Q238 (Mus musculus)
Explore E9Q238 
Go to UniProtKB:  E9Q238
IMPC:  MGI:2147707
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Kinesin-like protein KIF21AB28Mus musculusMutation(s): 0 
Gene Names: Kif21aKiaa1708
UniProt & NIH Common Fund Data Resources
Find proteins for Q9QXL2 (Mus musculus)
Explore Q9QXL2 
Go to UniProtKB:  Q9QXL2
IMPC:  MGI:109188
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.55 Å
  • R-Value Free: 0.200 
  • R-Value Work: 0.183 
  • R-Value Observed: 0.184 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 38.043α = 90
b = 52.08β = 90
c = 136.095γ = 90
Software Package:
Software NamePurpose
HKL-2000data collection
HKL-2000data scaling
PHASERphasing
PHENIXrefinement
PDB_EXTRACTdata extraction

Structure Validation

View Full Validation Report




Entry History & Funding Information

Deposition Data

  • Deposited Date: 2017-09-02 
  • Released Date: 2017-12-20 
  • Deposition Author(s): Wei, Z., Pan, W.

Funding OrganizationLocationGrant Number
National Natural Science Foundation of ChinaChina31770791
National Natural Science Foundation of ChinaChina31570741

Revision History  (Full details and data files)

  • Version 1.0: 2017-12-20
    Type: Initial release
  • Version 1.1: 2017-12-27
    Changes: Database references
  • Version 1.2: 2018-03-07
    Changes: Database references