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A scheme is proposed for designating enzymes that hydrolyse the polysaccharides in the cell walls of plants. These enzymes are predominantly beta-1,4-glycanases. The scheme is based on the classification of the catalytic domains of glycoside hydrolases into families of related amino acid sequences. The new designation for an enzyme indicates its family and, because all members of a family have these characteristics in common, its three-dimensional fold and stereospecificity of hydrolysis. The scheme is intended to simplify comparison of the systems of enzymes produced by different microorganisms for the hydrolysis of plant cell walls.
Henrissat et al. (1998) studied this question.