The structure of Cellobiose phosphorylase from Clostridium thermocellum in complex with phosphate

Experimental Data Snapshot

  • Resolution: 2.40 Å
  • R-Value Free: 0.208 
  • R-Value Work: 0.151 
  • R-Value Observed: 0.154 

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Structure of cellobiose phosphorylase from Clostridium thermocellum in complex with phosphate.

Bianchetti, C.M.Elsen, N.L.Fox, B.G.Phillips, G.N.

(2011) Acta Crystallogr Sect F Struct Biol Cryst Commun 67: 1345-1349

  • DOI: https://doi.org/10.1107/S1744309111032660
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    Clostridium thermocellum is a cellulosome-producing bacterium that is able to efficiently degrade and utilize cellulose as a sole carbon source. Cellobiose phosphorylase (CBP) plays a critical role in cellulose degradation by catalyzing the reversible phosphate-dependent hydrolysis of cellobiose, the major product of cellulose degradation, into α-D-glucose 1-phosphate and D-glucose. CBP from C. thermocellum is a modular enzyme composed of four domains [N-terminal domain, helical linker, (α/α)(6)-barrel domain and C-terminal domain] and is a member of glycoside hydrolase family 94. The 2.4 Å resolution X-ray crystal structure of C. thermocellum CBP reveals the residues involved in coordinating the catalytic phosphate as well as the residues that are likely to be involved in substrate binding and discrimination.

  • Organizational Affiliation

    Department of Biochemistry, University of Wisconsin-Madison, Madison, WI 53706, USA.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Cellobiose phosphorylase
A, B
811Acetivibrio thermocellusMutation(s): 0 
Gene Names: cbpQ8VP44
Find proteins for Q8VP44 (Acetivibrio thermocellus)
Explore Q8VP44 
Go to UniProtKB:  Q8VP44
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ8VP44
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 2.40 Å
  • R-Value Free: 0.208 
  • R-Value Work: 0.151 
  • R-Value Observed: 0.154 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 83.262α = 90
b = 122.062β = 90
c = 181.996γ = 90
Software Package:
Software NamePurpose
SCALEPACKdata scaling
PDB_EXTRACTdata extraction
DENZOdata reduction

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2011-11-09
    Type: Initial release
  • Version 1.1: 2012-04-11
    Changes: Database references
  • Version 1.2: 2017-11-08
    Changes: Advisory, Refinement description