rhamnosidase from Klebsiella oxytoca with rhamnose bound

Experimental Data Snapshot

  • Resolution: 2.70 Å
  • R-Value Free: 0.202 
  • R-Value Work: 0.182 
  • R-Value Observed: 0.183 

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Crystal structure of a novel two domain GH78 family alpha-rhamnosidase from Klebsiella oxytoca with rhamnose bound.

O'Neill, E.C.Stevenson, C.E.Paterson, M.J.Rejzek, M.Chauvin, A.L.Lawson, D.M.Field, R.A.

(2015) Proteins 83: 1742-1749

  • DOI: https://doi.org/10.1002/prot.24807
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    The crystal structure of the GH78 family α-rhamnosidase from Klebsiella oxytoca (KoRha) has been determined at 2.7 Å resolution with rhamnose bound in the active site of the catalytic domain. Curiously, the putative catalytic acid, Asp 222, is preceded by an unusual non-proline cis-peptide bond which helps to project the carboxyl group into the active centre. This KoRha homodimeric structure is significantly smaller than those of the other previously determined GH78 structures. Nevertheless, the enzyme displays α-rhamnosidase activity when assayed in vitro, suggesting that the additional structural domains found in the related enzymes are dispensible for function.

  • Organizational Affiliation

    Department of Biological Chemistry, John Innes Centre, Norwich Research Park, Norwich, Nr4 7UH, United Kingdom.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
A, B
543Klebsiella oxytocaMutation(s): 0 
Gene Names: KOX_19945
Find proteins for A0A0J9X262 (Klebsiella oxytoca)
Explore A0A0J9X262 
Go to UniProtKB:  A0A0J9X262
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupA0A0J9X262
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 2.70 Å
  • R-Value Free: 0.202 
  • R-Value Work: 0.182 
  • R-Value Observed: 0.183 
  • Space Group: P 41 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 148.43α = 90
b = 148.43β = 90
c = 202.16γ = 90
Software Package:
Software NamePurpose
PDB_EXTRACTdata extraction
Aimlessdata scaling

Structure Validation

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Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
Biotechnology and Biological Sciences Research CouncilUnited KingdomBB/J004561/1

Revision History  (Full details and data files)

  • Version 1.0: 2015-04-15
    Type: Initial release
  • Version 1.1: 2015-04-22
    Changes: Database references
  • Version 1.2: 2015-09-02
    Changes: Database references
  • Version 2.0: 2017-08-30
    Changes: Atomic model, Author supporting evidence
  • Version 2.1: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Data collection, Derived calculations, Structure summary
  • Version 2.2: 2024-05-08
    Changes: Data collection, Database references, Refinement description, Structure summary