4CBA

Structural of delta 1-76 CTNNBL1 in space group I222

• PDB DOI: https://doi.org/10.2210/pdb4CBA/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: 3.10 Å
• R-Value Free: 0.278 
• R-Value Work: 0.216 
• R-Value Observed: 0.220 

Starting Model: experimental

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

(2014) FEBS Lett 588: 21-27

• 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: Dihedral - D2  (Explore in 3D)
Global Stoichiometry: Homo 4-mer - A4 

Biological assembly 1 generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 57.66 kDa 
• Atom Count: 3,904 
• Modelled Residue Count: 481 
• 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 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
SO4	B [auth A], C [auth A], D [auth A], E [auth A]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L
EDO	F [auth A]	1,2-ETHANEDIOL C2 H6 O2 LYCAIKOWRPUZTN-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 3.10 Å
• R-Value Free: 0.278 
• R-Value Work: 0.216 
• R-Value Observed: 0.220 
• Space Group: I 2 2 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 87.422	α = 90
b = 92.848	β = 90
c = 194.949	γ = 90

Software Package:

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

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
• Version 1.2: 2019-08-28
  Changes: Data collection, Database references
• Version 1.3: 2023-12-20
  Changes: Data collection, Database references, Derived calculations, Other, Refinement description