4CB8

Structural and mutational analysis reveals that CTNNBL1 binds NLSs in a manner distinct from that of its closest armadillo-relative, karyopherin alpha

• PDB DOI: https://doi.org/10.2210/pdb4CB8/pdb

• Classification: APOPTOSIS
• Organism(s): Homo sapiens
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2013-10-10 Released: 2013-12-04 
• Deposition Author(s): Ganesh, K., vanMaldegem, F., Telerman, S.B., Simpson, P., Johnson, C.M., Williams, R.L., Neuberger, M.S., Rada, C.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.90 Å
• R-Value Free: 0.269 
• R-Value Work: 0.191 
• R-Value Observed: 0.195 

Literature

Structural and Mutational Analysis Reveals that Ctnnbl1 Binds Nlss in a Manner Distinct from that of its Closest Armadillo-Relative, Karyopherin Alpha

Ganesh, K., Maldegem, F.V., Telerman, S.B., Simpson, P., Johnson, C.M., Williams, R.L., Neuberger, M.S., Rada, C.

(2014) FEBS Lett 588: 21

• PubMed: 24269683 
• DOI: https://doi.org/10.1016/j.febslet.2013.11.013
• Primary Citation of Related Structures:  
  4CB8, 4CB9, 4CBA


• PubMed Abstract: 
  

  CTNNBL1 is a spliceosome-associated protein that binds nuclear localization signals (NLSs) in splice factors CDC5L and Prp31 as well as the antibody diversifying enzyme AID. Here, crystal structures of human CTNNBL1 reveal a distinct structure from its closest homologue karyopherin-α. CTNNBL1 comprises a HEAT-like domain (including a nuclear export signal), a central armadillo domain, and a coiled-coil C-terminal domain. Structure-guided mutations of the region homologous to the karyopherin-α NLS-binding site fail to disrupt CTNNBL1-NLS interactions. Our results identify CTNNBL1 as a unique selective NLS-binding protein with striking differences from karyopherin-αs.

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Organizational Affiliation: 

Medical Research Council Laboratory of Molecular Biology, Francis Crick Avenue, Cambridge CB2 0QH, UK.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 57.41 kDa 
• Atom Count: 3,940 
• Modelled Residue Count: 488 
• Deposited Residue Count: 496 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
BETA-CATENIN-LIKE PROTEIN 1	A	496	Homo sapiens	Mutation(s): 0
UniProt & NIH Common Fund Data Resources
Find proteins for Q8WYA6 (Homo sapiens) Explore Q8WYA6  Go to UniProtKB:  Q8WYA6
PHAROS:  Q8WYA6 GTEx:  ENSG00000132792

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
SO4	B [auth A], C [auth A]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.90 Å
• R-Value Free: 0.269 
• R-Value Work: 0.191 
• R-Value Observed: 0.195 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 63.101	α = 90
b = 92.686	β = 90
c = 121.685	γ = 90

Software Package:

Software Name	Purpose
XDS	data reduction
Aimless	data scaling
SHARP	phasing
PHASER	phasing
REFMAC	refinement

Structure Validation

Entry History 

Deposition Data

• Released Date: 2013-12-04 
Deposition Author(s): Ganesh, K., vanMaldegem, F., Telerman, S.B., Simpson, P., Johnson, C.M., Williams, R.L., Neuberger, M.S., Rada, C.

Revision History  

• Version 1.0: 2013-12-04
  Type: Initial release
  
• Version 1.1: 2014-01-15
  Changes: Database references