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Question

Name the class of enzyme that usually catalyze the following reaction:

$$S - G + S^{\#} \rightarrow \text{ }S + S^{\#} - G $$Where,

$G \rightarrow a$ group other than hydrogen

$S \rightarrow$ a substrate

$S^{\#} \rightarrow$ another substrate

Options

A.Hydrolase
B.Lyase
C.Transferase
D.Ligase

Solution

Enzymes catalyzing a transfer of G group, (other than hydrogen) between a pair of substrates, S and $S^{'}$ are known as transferases.

$$S - G + S^{\#} \rightarrow \text{ }S + S^{\#} - G$$

Ligases catalyze the linking together of 2 compounds such as $C - O,C - S,C - N$ bonds etc

Lyases catalyze removal of groups from substrates by mechanisms other than hydrolysis leaving double bonds

Hydrolases are enzymes that catalyze hydrolysis of ester, ether, peptide, glycosidic, $C - C,C -$ halide or $P - N$ bonds.

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