5HOE

Crystal structrue of Est24, a carbohydrate acetylesterase from Sinorhizobium meliloti


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.45 Å
  • R-Value Free: 0.216 
  • R-Value Work: 0.172 
  • R-Value Observed: 0.174 

Starting Model: experimental
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Literature

Structural and Biochemical Characterization of an Octameric Carbohydrate Acetylesterase from Sinorhizobium meliloti.

Oh, C.Ryu, B.H.An, D.R.Nguyen, D.D.Yoo, W.Kim, T.Ngo, T.D.Kim, H.S.Kim, K.K.Kim, T.D.

(2016) FEBS Lett 590: 1242-1252

  • DOI: https://doi.org/10.1002/1873-3468.12135
  • Primary Citation of Related Structures:  
    5HOE

  • PubMed Abstract: 

    Carbohydrate acetylesterases, which have a highly specific role among plant-interacting bacterial species, remove the acetyl groups from plant carbohydrates. Here, we determined the crystal structure of Est24, an octameric carbohydrate acetylesterase from Sinorhizobium meliloti, at 1.45 Å resolution and investigated its biochemical properties. The structure of Est24 consisted of five parallel β strands flanked by α helices, which formed an octameric assembly with two distinct interfaces. The deacetylation activity of Est24 and its mutants around the substrate-binding pocket was investigated using several substrates, including glucose pentaacetate and acetyl alginate. Elucidation of the structure-function relationships of Est24 could provide valuable opportunities for biotechnological explorations.


  • Organizational Affiliation

    Department of Molecular Cell Biology, Samsung Biomedical Research Institute, Sungkyunkwan University School of Medicine, Suwon, Korea.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Hydrolase
A, B, C, D
230Sinorhizobium meliloti 1021Mutation(s): 0 
Gene Names: SMa1993
UniProt
Find proteins for Q92XZ6 (Rhizobium meliloti (strain 1021))
Explore Q92XZ6 
Go to UniProtKB:  Q92XZ6
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ92XZ6
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.45 Å
  • R-Value Free: 0.216 
  • R-Value Work: 0.172 
  • R-Value Observed: 0.174 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 129.089α = 90
b = 88.626β = 114.3
c = 86.148γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
HKL-3000data reduction
HKL-3000data scaling
MOLREPphasing

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Korea GovernmentKorea, Republic Of2012R1A1A2000910
Rural Development AdministrationKorea, Republic OfSSAC PJ008107
National Research Foundation of KoreaKorea, Republic Of2011-0028878

Revision History  (Full details and data files)

  • Version 1.0: 2016-04-27
    Type: Initial release
  • Version 1.1: 2023-11-08
    Changes: Data collection, Database references, Derived calculations, Refinement description