glucuronic acid groups can be cleaved from the backbone by α-arabinofuranosidase
and α-glucuronidase, respectively. Acetylxylan esterase deacetylates xylose residues, while the ferulic acid esterase cleaves the ester linkage between arabinose and
ferulic acid residues. In case of mannan, the backbone-hydrolyzing enzymes are
β-mannanase, β-glucosidase, and β-mannosidase, whereas enzymes such as
acetylmannan esterase and α-galactosidase remove side-chain substituents attached
to the backbone of mannans.
Fig. 3 Some of the important hemicellulases involved in xylan (a) and mannan (b) degradation
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and α-glucuronidase, respectively. Acetylxylan esterase deacetylates xylose residues, while the ferulic acid esterase cleaves the ester linkage between arabinose and
ferulic acid residues. In case of mannan, the backbone-hydrolyzing enzymes are
β-mannanase, β-glucosidase, and β-mannosidase, whereas enzymes such as
acetylmannan esterase and α-galactosidase remove side-chain substituents attached
to the backbone of mannans.
Fig. 3 Some of the important hemicellulases involved in xylan (a) and mannan (b) degradation
256
G. Mamo