Glycoside hydrolase family 26

Glycosyl hydrolase family 26
Identifiers
Symbol Glyco_hydro_26
Pfam PF02156
Pfam clan CL0058
SCOP 1gvy
SUPERFAMILY 1gvy
OPM superfamily 125
OPM protein 2vi0
CAZy GH26

In molecular biology, glycoside hydrolase family 26 is a family of glycoside hydrolases.

Glycoside hydrolases EC 3.2.1. are a widespread group of enzymes that hydrolyse the glycosidic bond between two or more carbohydrates, or between a carbohydrate and a non-carbohydrate moiety. A classification system for glycoside hydrolases, based on sequence similarity, has led to the definition of >100 different families.[1][2][3] This classification is available on the CAZy(http://www.cazy.org/GH1.html) web site,[4] and also discussed at CAZypedia, an online encyclopedia of carbohydrate active enzymes.[5]

Glycoside hydrolase family 26 CAZY GH_26 comprises enzymes with two known activities; mannanase (EC 3.2.1.78) and β-1,3-xylanase (EC 3.2.1.32).

Family 26 encompasses mainly mannan endo-1,4-beta-mannosidases. Mannan endo-1,4-beta-mannosidase hydrolyses mannan and galactomannan, but displays little activity towards other plant cell wall polysaccharides.[6] The enzyme randomly hydrolyses 1,4-beta-D-linkages in mannans, galacto-mannans, glucomannans and galactoglucomannans.

References

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