Crystal structure of IFT81 N-terminal domain

Experimental Data Snapshot

  • Resolution: 2.32 Å
  • R-Value Free: 0.239 
  • R-Value Work: 0.214 
  • R-Value Observed: 0.215 

wwPDB Validation   3D Report Full Report

This is version 1.1 of the entry. See complete history


Molecular Basis of Tubulin Transport Within the Cilium by IFT74 and IFT81.

Bhogaraju, S.Cajanek, L.Fort, C.Blisnick, T.Weber, K.Taschner, M.Mizuno, N.Lamla, S.Bastin, P.Nigg, E.A.Lorentzen, E.

(2013) Science 341: 1009-1012

  • DOI: https://doi.org/10.1126/science.1240985
  • Primary Citation of Related Structures:  
    4LVP, 4LVR

  • PubMed Abstract: 

    Intraflagellar transport (IFT) of ciliary precursors such as tubulin from the cytoplasm to the ciliary tip is involved in the construction of the cilium, a hairlike organelle found on most eukaryotic cells. However, the molecular mechanisms of IFT are poorly understood. Here, we found that the two core IFT proteins IFT74 and IFT81 form a tubulin-binding module and mapped the interaction to a calponin homology domain of IFT81 and a highly basic domain in IFT74. Knockdown of IFT81 and rescue experiments with point mutants showed that tubulin binding by IFT81 was required for ciliogenesis in human cells.

  • Organizational Affiliation

    Department of Structural Cell Biology, Max Planck Institute of Biochemistry, Martinsried, Germany.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Intraflagellar transport protein 81127Chlamydomonas reinhardtiiMutation(s): 0 
Gene Names: IFT81CHLREDRAFT_138649
Find proteins for Q68RJ5 (Chlamydomonas reinhardtii)
Explore Q68RJ5 
Go to UniProtKB:  Q68RJ5
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ68RJ5
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 2.32 Å
  • R-Value Free: 0.239 
  • R-Value Work: 0.214 
  • R-Value Observed: 0.215 
  • Space Group: P 64 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 76.066α = 90
b = 76.066β = 90
c = 94.063γ = 120
Software Package:
Software NamePurpose
XDSdata scaling
PHENIXmodel building
XDSdata reduction

Structure Validation

View Full Validation Report

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2013-09-11
    Type: Initial release
  • Version 1.1: 2024-02-28
    Changes: Data collection, Database references, Derived calculations