Enzymes that catalyse removal of groups from substrates by mechanisms other than hydrolysis, and addition of groups to double bonds, are called

Options

A. ligases
B. lyases
C. hydrolases
D. dehydrogenases.

Answer

B

Explanation

Lyases enzyme catalyse the breakage of specific covalent bonds and removal of groups without hydrolysis producing double bonds or removal of double bonds by adding groups, e.g., histidine decarboxylase that splits C-C bond of histidine, forming `CO_(2)` and histamine.
`overset(X)overset(|)(C)-overset(X)overset(|)(C)overset("lyase")rarr X-Y+C=C`