1BD7

CIRCULARLY PERMUTED BB2-CRYSTALLIN


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.78 Å
  • R-Value Free: 0.278 
  • R-Value Work: 0.190 
  • R-Value Observed: 0.190 

Starting Model: experimental
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wwPDB Validation   3D Report Full Report


This is version 1.4 of the entry. See complete history


Literature

Circular permutation of betaB2-crystallin changes the hierarchy of domain assembly.

Wright, G.Basak, A.K.Wieligmann, K.Mayr, E.M.Slingsby, C.

(1998) Protein Sci 7: 1280-1285

  • DOI: https://doi.org/10.1002/pro.5560070602
  • Primary Citation of Related Structures:  
    1BD7

  • PubMed Abstract: 

    The betagamma-crystallins form a superfamily of eye lens proteins comprised of multiple Greek motifs that are symmetrically organized into domains and higher assemblies. In the betaB2-crystallin dimer each polypeptide folds into two similar domains that are related to monomeric gamma-crystallin by domain swapping. The crystal structure of the circularly permuted two-domain betaB2 polypeptide shows that permutation converts intermolecular domain pairing into intramolecular pairing. However, the dimeric permuted protein is, in fact, half a native tetramer. This result shows how the sequential order of domains in multi-domain proteins can affect quaternary domain assembly.


  • Organizational Affiliation

    Birkbeck College, Department of Crystallography, London, United Kingdom.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
CIRCULARLY PERMUTED BB2-CRYSTALLIN
A, B
176Rattus norvegicusMutation(s): 0 
UniProt
Find proteins for P62697 (Rattus norvegicus)
Explore P62697 
Go to UniProtKB:  P62697
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP62697
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.78 Å
  • R-Value Free: 0.278 
  • R-Value Work: 0.190 
  • R-Value Observed: 0.190 
  • Space Group: P 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 39α = 66.7
b = 48.5β = 74.9
c = 54.5γ = 77.5
Software Package:
Software NamePurpose
X-PLORmodel building
X-PLORrefinement
DENZOdata reduction
CCP4data scaling
ROTAVATAdata scaling
X-PLORphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1998-10-21
    Type: Initial release
  • Version 1.1: 2008-03-28
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2024-02-07
    Changes: Data collection, Database references, Other, Refinement description
  • Version 1.4: 2024-04-03
    Changes: Refinement description