Structure of an enoyl-CoA hydratase/aldolase isolated from a lignin-degrading consortium

Experimental Data Snapshot

  • Resolution: 2.10 Å
  • R-Value Free: 0.229 
  • R-Value Work: 0.196 
  • R-Value Observed: 0.198 

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The structure of a prokaryotic feruloyl-CoA hydratase-lyase from a lignin-degrading consortium with high oligomerization stability under extreme pHs.

Liberato, M.V.Araujo, J.N.Sodre, V.Goncalves, T.A.Vilela, N.Moraes, E.C.Garcia, W.Squina, F.M.

(2020) Biochim Biophys Acta Proteins Proteom 1868: 140344-140344

  • DOI: https://doi.org/10.1016/j.bbapap.2019.140344
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    In the context of increasing demand for renewable alternatives of fuels and chemicals, the valorization of lignin emerges as a value-adding strategy in biorefineries and an alternative to petroleum-derived molecules. One of the compounds derived from lignin is ferulic acid (FA), which can be converted into valuable molecules such as vanillin. In microorganisms, FA biotransformation into vanillin can occur via a two-step reaction catalyzed by the sequential activity of a feruloyl-CoA synthetase (FCS) and an feruloyl-CoA hydratase-lyase (FCHL), which could be exploited industrially. In this study, a prokaryotic FCHL derived from a lignin-degrading microbial consortium (named LM-FCHL) was cloned, successfully expressed in soluble form and purified. The crystal structure was solved and refined at 2.1 Å resolution. The LM-FCHL is a hexamer composed of a dimer of trimers, which showed to be quite stable under extreme pH conditions. Finally, small angle X-ray scattering corroborates the hexameric state in solution and indicates flexibility in the protein structure. The present study contributes to the field of lignin valorization to valuable molecules by establishing the biophysical and structural characterization for a novel FCHL member of unique characteristics.

  • Organizational Affiliation

    Programa de Processos Tecnológicos e Ambientais, Universidade de Sorocaba, Sorocaba, SP, Brazil.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Enoyl-CoA hydratase
A, B, C, D, E
A, B, C, D, E, F
283uncultured organismMutation(s): 0 
Gene Names: Ech
Find proteins for A0A2P1BT02 (uncultured organism)
Explore A0A2P1BT02 
Go to UniProtKB:  A0A2P1BT02
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupA0A2P1BT02
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 2.10 Å
  • R-Value Free: 0.229 
  • R-Value Work: 0.196 
  • R-Value Observed: 0.198 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 99.28α = 90
b = 130.96β = 90.68
c = 115.91γ = 90
Software Package:
Software NamePurpose
XDSdata reduction
Aimlessdata scaling
PDB_EXTRACTdata extraction

Structure Validation

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Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
Sao Paulo Research Foundation (FAPESP)Brazil2014/04105-4
Sao Paulo Research Foundation (FAPESP)Brazil2015/50590-4

Revision History  (Full details and data files)

  • Version 1.0: 2020-04-08
    Type: Initial release
  • Version 1.1: 2023-10-11
    Changes: Data collection, Database references, Refinement description