3WQ8

Monomer structure of hyperthermophilic beta-glucosidase mutant forming a dodecameric structure in the crystal form


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.81 Å
  • R-Value Free: 0.275 
  • R-Value Work: 0.243 
  • R-Value Observed: 0.245 

Starting Model: experimental
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This is version 1.2 of the entry. See complete history


Literature

Monomer structure of a hyperthermophilic beta-glucosidase mutant forming a dodecameric structure in the crystal form.

Nakabayashi, M.Kataoka, M.Watanabe, M.Ishikawa, K.

(2014) Acta Crystallogr F Struct Biol Commun 70: 854-859

  • DOI: https://doi.org/10.1107/S2053230X14010188
  • Primary Citation of Related Structures:  
    3WQ8

  • PubMed Abstract: 

    One of the β-glucosidases from Pyrococcus furiosus (BGLPf) is found to be a hyperthermophilic tetrameric enzyme that can degrade cellooligosaccharides. Recently, the crystal structures of the tetrameric and dimeric forms were solved. Here, a new monomeric form of BGLPf was constructed by removing the C-terminal region of the enzyme and its crystal structure was solved at a resolution of 2.8 Å in space group P1. It was discovered that the mutant enzyme forms a unique dodecameric structure consisting of two hexameric rings in the asymmetric unit of the crystal. Under biological conditions, the mutant enzyme forms a monomer. This result helps explain how BGLPf has attained its oligomeric structure and thermostability.


  • Organizational Affiliation

    Biomass Refinery Research Center, National Institute of Advanced Industrial Science, 3-11-32 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-0046, Japan.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Beta-glucosidase
A, B, C, D, E
A, B, C, D, E, F, G, H, I, J, K, L
450Pyrococcus furiosusMutation(s): 6 
Gene Names: celB
EC: 3.2.1.21
UniProt
Find proteins for Q51723 (Pyrococcus furiosus)
Explore Q51723 
Go to UniProtKB:  Q51723
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ51723
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.81 Å
  • R-Value Free: 0.275 
  • R-Value Work: 0.243 
  • R-Value Observed: 0.245 
  • Space Group: P 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 97.365α = 120.08
b = 148.872β = 94
c = 148.563γ = 99.7
Software Package:
Software NamePurpose
HKL-2000data collection
PHASERphasing
REFMACrefinement
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2014-07-09
    Type: Initial release
  • Version 1.1: 2019-12-25
    Changes: Database references
  • Version 1.2: 2023-11-08
    Changes: Data collection, Database references, Refinement description