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C8241 Sigma-Aldrich

Chitinase from Trichoderma viride

lyophilized powder, ≥600 units/g solid

Synonym: N-acetyl-β-glucosaminidase and chitodextrinase



Related Categories 3.2.x.x Glycosidases, 3.x.x.x Hydrolases, Application Index, Biochemicals and Reagents, Carbohydrate Hydrolysis,
form   lyophilized powder
solubility   0.05 M phosphate buffer, pH 6.0: soluble 0.90-1.10 mg/mL, faintly hazy to hazy (with particles)
shipped in   wet ice
storage temp.   −20°C



Chitinase from Trichoderma viride has been used in a study to investigate the differential release of high mannose structural isoforms by fungal and bacterial endo-β-N-acetylglucosaminidases. Chitinase from Trichoderma viride has also been used in a study to investigate a hevein-like protein and a class I chitinase with antifungal activity from leaves of the paper mulberry.

The enzyme from Sigma has been used to digest chitin in purified sponge spicules during the study of sponge skeletons.


25 units in glass bottle

Biochem/physiol Actions

Chitinase is a 30 kDa (approx.) extracellular enzyme complex that degrades chitin. Chitin is degraded to N-acetyl-D-glucosamine in 2 enzymatic reactions. Firstly, chitobiose units are removed from chitin by chitodextrinase-chitinase, a poly(1,4-β-[2-acetamido-2-deoxy-D-glucoside])-glycanohydrolase. The second reaction involves N-acetyl-glucosaminidase-chitobiase, which cleaves the disaccharide to its monomer subunits of N-acetyl-D-glucosamine. The enzyme may be classified into endo- and exochitinase. The endochitinase activity involves random cleavage at internal points in the chitin chain. The exochitinase activity consists of a progressive action which starts at the non-reducing end of chitin and releases chitobiose or N-acetyl-glucosamine units. The chitinolytic enzymes from T. viride are a mixture of extracellular chitinolytic enzymes, which exhibit exo- and endochitinase activities. The major activity was found to be that of N-acetyl-β-glucosaminidase.

Unit Definition

One unit will liberate 1.0 mg of N-acetyl-D-glucosamine from chitin per hour at pH 6.0 at 25 °C in a 2 hour assay.
One new 1 hour unit = approx. 50 old 48 hour units.

Other Notes

View more information on enzymes for complex carbohydrate analysis at www.sigma-aldrich.com/enzymeexplorer

Safety & Documentation

Safety Information

NONH for all modes of transport
WGK Germany 
Protocols & Articles

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