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The enzyme quercitrinase (EC 3.2.1.66) catalyzes the following chemical reaction:

quercitrin + H₂O ${\displaystyle \rightleftharpoons }$ L-rhamnose + quercetin

Thus, the two substrates of this enzyme are quercitrin and H₂O, whereas its two products are L-rhamnose and quercetin.

This enzyme belongs to the family of hydrolases, specifically those glycosidases that hydrolyse O- and S-glycosyl compounds. The systematic name of this enzyme class is quercitrin 3-L-rhamnohydrolase.

The enzyme can be found in Aspergillus flavus. It is an enzyme in the rutin catabolic pathway.

References

1. "EC 3.2.1.66 - quercitrinase". Brenda, The Comprehensive Enzyme Information System. Technische Universitat Braunschweig. Retrieved 2011-12-25.
2. Tranchimand S, Brouant P, Iacazio G (November 2010). "The rutin catabolic pathway with special emphasis on quercetinase". Biodegradation. 21 (6): 833–59. doi:10.1007/s10532-010-9359-7. PMID 20419500.

Further reading

• Westlake DWS (1963). "Microbiological degradation of quercitrin". Can. J. Microbiol. 9 (2): 211–220. doi:10.1139/m63-027.

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