Question

Lyases catalyze through

• A. removal of groups from substrates by mechanisms other than hydrolysis leaving double bonds.
• B. linking together of two compounds
• C. transfer of a group, other than hydrogen, between a pair of substrates
• D. inter-conversion of optical, geometric or positional isomers.

Answer 1

Answer: (A)

Enzymes are proteins that catalyse biological reactions. These enzymes are grouped or categorized as per their reaction mechanism. They are divided in 6 classes.
1 - Oxidoreductase/dehydrogenase - catalyse oxidoreduction reaction.
2 - Transferase - Cataysing transfer of functional group
3 - Hydrolases - Catalyses hydrolysis of compounds.
4 - Lyases - catalyses removal of groups by mechanism other than hydrolysis
5 - Isomerases - Catalysing inter conversion of isomers
6 - Ligases - catalysing linking of two compounds.
Enzyme 4 a.b.c . belongs to the group of lyases which catalyses break down of substrates by means other than hydrolysis.