Plant Molecular Biology

, Volume 47, Issue 1–2, pp 55–72 | Cite as

A census of carbohydrate-active enzymes in the genome of Arabidopsis thaliana

  • Bernard Henrissat
  • Pedro M. Coutinho
  • Gideon J. Davies


The synthesis, modification, and breakdown of carbohydrates is one of the most fundamentally important reactions in nature. The structural and functional diversity of glycosides is mirrored by a vast array of enzymes involved in their synthesis (glycosyltransferases), modification (carbohydrate esterases) and breakdown (glycoside hydrolases and polysaccharide lyases). The importance of these processes is reflected in the dedication of 1–2% of an organism's genes to glycoside hydrolases and glycosyltransferases alone. In plants, these processes are of particular importance for cell-wall synthesis and expansion, starch metabolism, defence against pathogens, symbiosis and signalling. Here we present an analysis of over 730 open reading frames representing the two main classes of carbohydrate-active enzymes, glycoside hydrolases and glycosyltransferases, in the genome of Arabidopsis thaliana. The vast importance of these enzymes in cell-wall formation and degradation is revealed along with the unexpected dominance of pectin degradation in Arabidopsis, with at least 170 open-reading frames dedicated solely to this task.

Arabidopsis genome glycoside hydrolases glycosyltransferases 


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Copyright information

© Kluwer Academic Publishers 2001

Authors and Affiliations

  • Bernard Henrissat
    • 1
  • Pedro M. Coutinho
    • 2
  • Gideon J. Davies
    • 3
  1. 1.Architecture et Fonction des Macromolécules BiologiquesCNRS and Universités d'Aix-Marseille I and IIMarseille cedex 20France
  2. 2.Centre for Biological and Chemical EngineeringInstituto Superior TécnicoLisboaPortugal
  3. 3.Structural Biology Laboratory, Department of ChemistryUniversity of YorkHeslington, YorkUK

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