1V8K

The Crystal Structure of the Minimal Functional Domain of the Microtubule Destabilizer KIF2C Complexed with Mg-AMPPNP


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.25 Å
  • R-Value Free: 0.252 
  • R-Value Work: 0.215 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

A common mechanism for microtubule destabilizers-M type kinesins stabilize curling of the protofilament using the class-specific neck and loops.

Ogawa, T.Nitta, R.Okada, Y.Hirokawa, N.

(2004) Cell 116: 591-602

  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Unlike other kinesins, middle motor domain-type kinesins depolymerize the microtubule from its ends. To elucidate its mechanism, we solved the X-ray crystallographic structure of KIF2C, a murine member of this family. Three major class-specific featu ...

    Unlike other kinesins, middle motor domain-type kinesins depolymerize the microtubule from its ends. To elucidate its mechanism, we solved the X-ray crystallographic structure of KIF2C, a murine member of this family. Three major class-specific features were identified. The class-specific N-terminal neck adopts a long and rigid helical structure extending out vertically into the interprotofilament groove. This structure explains its dual roles in targeting to the end of the microtubule and in destabilization of the lateral interaction of the protofilament. The loop L2 forms a unique finger-like structure, long and rigid enough to reach the next tubulin subunit to stabilize the peeling of the protofilament. The open conformation of the switch I loop could be reversed by the shift of the microtubule binding L8 loop, suggesting its role as the sensor to trigger ATP hydrolysis. Mutational analysis supports these structural implications.


    Organizational Affiliation

    Department of Cell Biology and Anatomy, University of Tokyo, Graduate School of Medicine, Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Kinesin-like protein KIF2C
A
410Mus musculusMutation(s): 0 
Gene Names: Kif2c
Find proteins for Q922S8 (Mus musculus)
Go to UniProtKB:  Q922S8
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ANP
Query on ANP

Download SDF File 
Download CCD File 
A
PHOSPHOAMINOPHOSPHONIC ACID-ADENYLATE ESTER
C10 H17 N6 O12 P3
PVKSNHVPLWYQGJ-KQYNXXCUSA-N
 Ligand Interaction
MG
Query on MG

Download SDF File 
Download CCD File 
A
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.25 Å
  • R-Value Free: 0.252 
  • R-Value Work: 0.215 
  • Space Group: C 2 2 2
Unit Cell:
Length (Å)Angle (°)
a = 61.068α = 90.00
b = 191.475β = 90.00
c = 74.627γ = 90.00
Software Package:
Software NamePurpose
SCALEPACKdata scaling
CNSrefinement
HKL-2000data reduction
CNSphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2004-03-02
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Derived calculations, Version format compliance