Human CEP85 - coiled coil domain 4

Experimental Data Snapshot

  • Resolution: 1.67 Å
  • R-Value Free: 0.239 
  • R-Value Work: 0.203 
  • R-Value Observed: 0.204 

wwPDB Validation   3D Report Full Report

This is version 1.2 of the entry. See complete history


Direct binding of CEP85 to STIL ensures robust PLK4 activation and efficient centriole assembly.

Liu, Y.Gupta, G.D.Barnabas, D.D.Agircan, F.G.Mehmood, S.Wu, D.Coyaud, E.Johnson, C.M.McLaughlin, S.H.Andreeva, A.Freund, S.M.V.Robinson, C.V.Cheung, S.W.T.Raught, B.Pelletier, L.van Breugel, M.

(2018) Nat Commun 9: 1731-1731

  • DOI: https://doi.org/10.1038/s41467-018-04122-x
  • Primary Citation of Related Structures:  
    5OI7, 5OI9, 5OID

  • PubMed Abstract: 

    Centrosomes are required for faithful chromosome segregation during mitosis. They are composed of a centriole pair that recruits and organizes the microtubule-nucleating pericentriolar material. Centriole duplication is tightly controlled in vivo and aberrations in this process are associated with several human diseases, including cancer and microcephaly. Although factors essential for centriole assembly, such as STIL and PLK4, have been identified, the underlying molecular mechanisms that drive this process are incompletely understood. Combining protein proximity mapping with high-resolution structural methods, we identify CEP85 as a centriole duplication factor that directly interacts with STIL through a highly conserved interaction interface involving a previously uncharacterised domain of STIL. Structure-guided mutational analyses in vivo demonstrate that this interaction is essential for efficient centriolar targeting of STIL, PLK4 activation and faithful daughter centriole assembly. Taken together, our results illuminate a molecular mechanism underpinning the spatiotemporal regulation of the early stages of centriole duplication.

  • Organizational Affiliation

    Lunenfeld-Tanenbaum Research Institute, Sinai Health System, 600 University Avenue, Toronto, ON M5G 1X5, Canada.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Centrosomal protein of 85 kDa
A, B
88Homo sapiensMutation(s): 0 
Gene Names: CEP85CCDC21
UniProt & NIH Common Fund Data Resources
Find proteins for Q6P2H3 (Homo sapiens)
Explore Q6P2H3 
Go to UniProtKB:  Q6P2H3
GTEx:  ENSG00000130695 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ6P2H3
Sequence Annotations
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
Query on MPD

Download Ideal Coordinates CCD File 
C6 H14 O2
Experimental Data & Validation

Experimental Data

  • Resolution: 1.67 Å
  • R-Value Free: 0.239 
  • R-Value Work: 0.203 
  • R-Value Observed: 0.204 
  • Space Group: I 2 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 37.93α = 90
b = 73.88β = 90
c = 128.13γ = 90
Software Package:
Software NamePurpose
iMOSFLMdata reduction
SCALAdata scaling

Structure Validation

View Full Validation Report

Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
Medical Research Council (United Kingdom)United KingdomMC_UP_1201/3

Revision History  (Full details and data files)

  • Version 1.0: 2018-04-18
    Type: Initial release
  • Version 1.1: 2018-05-09
    Changes: Data collection, Database references
  • Version 1.2: 2024-01-17
    Changes: Data collection, Database references, Refinement description