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Q. Enzymes that catalyse removal of groups from substances by mechanism other than hydrolysis leaving double bond are called

CHD CETCHD CET 2009Biomolecules

Solution:

Lyases enzyme catalyze 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.
Fructose-1, 6 diphosphate$\xrightarrow{\text{Aldolase}}$ Dihydroxyacetone-3- phosphate + Glyceraldehyde-3-phosphate.

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