4HM9

Crystal structure of full-length human catenin-beta-like 1


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.10 Å
  • R-Value Free: 0.225 
  • R-Value Work: 0.174 
  • R-Value Observed: 0.177 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

The structure of full-length human CTNNBL1 reveals a distinct member of the armadillo-repeat protein family.

Huang, X.Wang, G.Wu, Y.Du, Z.

(2013) Acta Crystallogr D Biol Crystallogr 69: 1598-1608

  • DOI: 10.1107/S0907444913011360
  • Primary Citation of Related Structures:  
    4HM9, 4HNM

  • PubMed Abstract: 
  • Catenin-β-like protein 1 (CTNNBL1) is a highly conserved protein with multiple functions, one of which is to act as an interaction partner of the antibody-diversification enzyme activation-induced cytidine deaminase (AID) for its nuclear import and s ...

    Catenin-β-like protein 1 (CTNNBL1) is a highly conserved protein with multiple functions, one of which is to act as an interaction partner of the antibody-diversification enzyme activation-induced cytidine deaminase (AID) for its nuclear import and subnuclear trafficking. Here, the crystal structure of full-length human CTNNBL1 is reported. The protein contains six armadillo (ARM) repeats that pack into a superhelical ARM domain. This ARM domain is unique within the ARM protein family owing to the presence of several unusual structural features. Moreover, CTNNBL1 contains significant and novel non-ARM structures flanking both ends of the central ARM domain. A strong continuous hydrophobic core runs through the whole structure, indicating that the ARM and non-ARM structures fold together to form an integral structure. This structure defines a highly restrictive and discriminatory protein-binding groove that is not observed in other ARM proteins. The presence of a cluster of histidine residues in the groove implies a pH-sensitive histidine-mediated mechanism that may regulate protein binding activity. The many unique structural features of CTNNBL1 establish it as a distinct member of the ARM protein family. The structure provides critical insights into the molecular interactions between CTNNBL1 and its protein partners, especially AID.


    Organizational Affiliation

    Department of Computer Science, Southern Illinois University, 1000 Faner Drive, Carbondale, IL 62901, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Beta-catenin-like protein 1A568Homo sapiensMutation(s): 0 
Gene Names: C20orf33CTNNBL1PP8304
Find proteins for Q8WYA6 (Homo sapiens)
Explore Q8WYA6 
Go to UniProtKB:  Q8WYA6
NIH Common Fund Data Resources
PHAROS  Q8WYA6
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.10 Å
  • R-Value Free: 0.225 
  • R-Value Work: 0.174 
  • R-Value Observed: 0.177 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 48.99α = 90
b = 116.36β = 90
c = 137.4γ = 90
Software Package:
Software NamePurpose
MOSFLMdata reduction
SCALAdata scaling
PHASERphasing
PHENIXrefinement
PDB_EXTRACTdata extraction

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-07-31
    Type: Initial release
  • Version 1.1: 2013-08-21
    Changes: Database references