Bardet-Biedl Syndrome 9 Protein (aa1-407), Homo sapiens

Experimental Data Snapshot

  • Resolution: 1.80 Å
  • R-Value Free: 0.200 
  • R-Value Work: 0.169 
  • R-Value Observed: 0.170 

wwPDB Validation   3D Report Full Report

This is version 1.4 of the entry. See complete history


Structural Characterization of Bardet-Biedl Syndrome 9 Protein (BBS9).

Knockenhauer, K.E.Schwartz, T.U.

(2015) J Biol Chem 290: 19569-19583

  • DOI: https://doi.org/10.1074/jbc.M115.649202
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    The Bardet-Biedl syndrome protein complex (BBSome) is an octameric complex that transports membrane proteins into the primary cilium signaling organelle in eukaryotes and is implicated in human disease. Here we have analyzed the 99-kDa human BBS9 protein, one of the eight BBSome components. The protein is composed of four structured domains, including a β-stranded N-terminal domain. The 1.8 Å crystal structure of the 46-kDa N-terminal domain reveals a seven-bladed β-propeller. A structure-based homology search suggests that it functions in protein-protein interactions. We show that the Bardet-Biedl syndrome-causing G141R mutation in BBS9 likely results in misfolding of the β-propeller. Although the C-terminal half of BBS9 dimerizes in solution, the N-terminal domain only does so in the crystal lattice. This C-terminal dimerization interface might be important for the assembly of the BBSome.

  • Organizational Affiliation

    From the Department of Biology, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Protein PTHB1
A, B
411Homo sapiensMutation(s): 0 
Gene Names: BBS9PTHB1
UniProt & NIH Common Fund Data Resources
Find proteins for Q3SYG4 (Homo sapiens)
Explore Q3SYG4 
Go to UniProtKB:  Q3SYG4
GTEx:  ENSG00000122507 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ3SYG4
Sequence Annotations
  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChains TypeFormula2D DiagramParent
Query on MSE
A, B
Experimental Data & Validation

Experimental Data

Unit Cell:
Length ( Å )Angle ( ˚ )
a = 136.417α = 90
b = 81.878β = 90
c = 85.649γ = 90
Software Package:
Software NamePurpose
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

View Full Validation Report

Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United StatesT32GM007287

Revision History  (Full details and data files)

  • Version 1.0: 2015-06-24
    Type: Initial release
  • Version 1.1: 2015-07-01
    Changes: Database references
  • Version 1.2: 2015-08-19
    Changes: Database references
  • Version 1.3: 2017-09-20
    Changes: Author supporting evidence, Database references, Derived calculations
  • Version 1.4: 2019-12-25
    Changes: Author supporting evidence