4 Annotating Carbohydrate-Active Enzymes in Plant Genomes: Present Challenges

Annual Plant Reviews book series, Volume 41: Plant Polysaccharides
Pedro M. Coutinho

Pedro M. Coutinho

Universities of Aix-Marseille I and II, Architecture et Fonction des Macromolécules Biologiques, UMR6098, CNRS, Marseille, 13288, Cédex 9 France

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Bernard Henrissat

Bernard Henrissat

Universities of Aix-Marseille I and II, Architecture et Fonction des Macromolécules Biologiques, UMR6098, CNRS, Marseille, 13288, Cédex 9 France

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First published: 19 April 2018
This article was originally published in 2011 in Plant Polysaccharides, Volume 41 (ISBN 9781405181723) of the Annual Plant Reviews book series, this volume edited by Peter Ulvskov. The article was republished in Annual Plant Reviews online in April 2018.
Manuscript received September 2008

Abstract

There are far more carbohydrate structures than protein folds and, not unexpectedly, sequence-based families of carbohydrate-active enzymes often group together enzymes of different specificity. While this fact illustrates the remarkable plasticity of proteins to evolve novel specificities from pre-existing folds, this is also the source of potential errors during the functional prediction of genes derived from whole genome sequencing efforts. This chapter reviews the problems and the advances associated with the sequence-based classification of plant carbohydrate-active enzymes as used in the CAZy database (www.cazy.org).

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