4WZX

ULK3 regulates cytokinetic abscission by phosphorylating ESCRT-III proteins


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.3859 Å
  • R-Value Free: 0.180 
  • R-Value Work: 0.151 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

ULK3 regulates cytokinetic abscission by phosphorylating ESCRT-III proteins.

Caballe, A.Wenzel, D.M.Agromayor, M.Alam, S.L.Skalicky, J.J.Kloc, M.Carlton, J.G.Labrador, L.Sundquist, W.I.Martin-Serrano, J.

(2015) Elife 4: e06547-e06547

  • DOI: 10.7554/eLife.06547

  • PubMed Abstract: 
  • The endosomal sorting complexes required for transport (ESCRT) machinery mediates the physical separation between daughter cells during cytokinetic abscission. This process is regulated by the abscission checkpoint, a genome protection mechanism that ...

    The endosomal sorting complexes required for transport (ESCRT) machinery mediates the physical separation between daughter cells during cytokinetic abscission. This process is regulated by the abscission checkpoint, a genome protection mechanism that relies on Aurora B and the ESCRT-III subunit CHMP4C to delay abscission in response to chromosome missegregation. In this study, we show that Unc-51-like kinase 3 (ULK3) phosphorylates and binds ESCRT-III subunits via tandem MIT domains, and thereby, delays abscission in response to lagging chromosomes, nuclear pore defects, and tension forces at the midbody. Our structural and biochemical studies reveal an unusually tight interaction between ULK3 and IST1, an ESCRT-III subunit required for abscission. We also demonstrate that IST1 phosphorylation by ULK3 is an essential signal required to sustain the abscission checkpoint and that ULK3 and CHMP4C are functionally linked components of the timer that controls abscission in multiple physiological situations.


    Organizational Affiliation

    Department of Infectious Diseases, King's College London School of Medicine, London, United Kingdom.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Serine/threonine-protein kinase ULK3
A
95Homo sapiensMutation(s): 0 
Gene Names: ULK3
EC: 2.7.11.1
Find proteins for Q6PHR2 (Homo sapiens)
Go to Gene View: ULK3
Go to UniProtKB:  Q6PHR2
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
IST1 homolog
E
23Homo sapiensMutation(s): 0 
Gene Names: IST1 (KIAA0174)
Find proteins for P53990 (Homo sapiens)
Go to Gene View: IST1
Go to UniProtKB:  P53990
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download SDF File 
Download CCD File 
A
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
CO
Query on CO

Download SDF File 
Download CCD File 
A
COBALT (II) ION
Co
XLJKHNWPARRRJB-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.3859 Å
  • R-Value Free: 0.180 
  • R-Value Work: 0.151 
  • Space Group: H 3 2
Unit Cell:
Length (Å)Angle (°)
a = 79.117α = 90.00
b = 79.117β = 90.00
c = 96.620γ = 120.00
Software Package:
Software NamePurpose
XSCALEdata scaling
PHENIXphasing
XDSdata reduction
PHENIXrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of General Medical SciencesUnited StatesR01 GM112080
American Cancer SocietyUnited StatesPF-14-102-01-CSM

Revision History 

  • Version 1.0: 2015-06-03
    Type: Initial release
  • Version 1.1: 2015-06-10
    Type: Database references
  • Version 1.2: 2015-08-26
    Type: Database references
  • Version 1.3: 2017-09-27
    Type: Author supporting evidence, Derived calculations