5LB7

Complex structure between p60N/p80C katanin and a peptide derived from ASPM


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.5 Å
  • R-Value Free: 0.223 
  • R-Value Work: 0.183 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Microtubule minus-end regulation at spindle poles by an ASPM-katanin complex.

Jiang, K.Rezabkova, L.Hua, S.Liu, Q.Capitani, G.Maarten Altelaar, A.F.Heck, A.J.R.Kammerer, R.A.Steinmetz, M.O.Akhmanova, A.

(2017) Nat. Cell Biol. 19: 480-492

  • DOI: 10.1038/ncb3511
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • ASPM (known as Asp in fly and ASPM-1 in worm) is a microcephaly-associated protein family that regulates spindle architecture, but the underlying mechanism is poorly understood. Here, we show that ASPM forms a complex with another protein linked to m ...

    ASPM (known as Asp in fly and ASPM-1 in worm) is a microcephaly-associated protein family that regulates spindle architecture, but the underlying mechanism is poorly understood. Here, we show that ASPM forms a complex with another protein linked to microcephaly, the microtubule-severing ATPase katanin. ASPM and katanin localize to spindle poles in a mutually dependent manner and regulate spindle flux. X-ray crystallography revealed that the heterodimer formed by the N- and C-terminal domains of the katanin subunits p60 and p80, respectively, binds conserved motifs in ASPM. Reconstitution experiments demonstrated that ASPM autonomously tracks growing microtubule minus ends and inhibits their growth, while katanin decorates and bends both ends of dynamic microtubules and potentiates the minus-end blocking activity of ASPM. ASPM also binds along microtubules, recruits katanin and promotes katanin-mediated severing of dynamic microtubules. We propose that the ASPM-katanin complex controls microtubule disassembly at spindle poles and that misregulation of this process can lead to microcephaly.


    Organizational Affiliation

    Cell Biology, Department of Biology, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Katanin p80 WD40 repeat-containing subunit B1
A
212Mus musculusMutation(s): 0 
Gene Names: Katnb1
Find proteins for Q8BG40 (Mus musculus)
Go to UniProtKB:  Q8BG40
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Katanin p60 ATPase-containing subunit A1
B
80Mus musculusMutation(s): 0 
Gene Names: Katna1
EC: 5.6.1.1
Find proteins for Q9WV86 (Mus musculus)
Go to UniProtKB:  Q9WV86
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
Abnormal spindle-like microcephaly-associated protein homolog
C
9Mus musculusMutation(s): 0 
Gene Names: Aspm (Calmbp1, Sha1)
Find proteins for Q8CJ27 (Mus musculus)
Go to UniProtKB:  Q8CJ27
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.5 Å
  • R-Value Free: 0.223 
  • R-Value Work: 0.183 
  • Space Group: C 2 2 2
Unit Cell:
Length (Å)Angle (°)
a = 104.090α = 90.00
b = 145.120β = 90.00
c = 37.560γ = 90.00
Software Package:
Software NamePurpose
XDSdata reduction
PHASERphasing
XSCALEdata scaling
PHENIXrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2017-04-26
    Type: Initial release
  • Version 1.1: 2017-05-03
    Type: Database references
  • Version 1.2: 2017-05-10
    Type: Database references