What is "tropinesterase"

In enzymology, a tropinesterase is an enzyme that catalyzes the chemical reaction

atropine + HO $\rightleftharpoons$ tropine + tropate

Thus, the two substrates of this enzyme are atropine and HO, whereas its two products are tropine and tropate.

This enzyme belongs to the family of hydrolases, specifically those acting on carboxylic ester bonds. The systematic name of this enzyme class is atropine acylhydrolase. Other names in common use include tropine esterase, atropinase, and atropine esterase.