Question : How is naming of enzymes is done ? Describe types of enzyme

1.	Question : How is naming of enzymes is done ? Describe types of enzymes with examples.
Answer» Solution :`-` Thousands of enzymes have been discovered, isolated and studied. - Most of these enzymes have been classified into different groups based on the type of reactions they catalyse. - Enzymes are divided into 6 classes each with 4-13 subclasses and named accordingly by a four-digit number. (1) Oxidoreductases/dehydrogenases : Enzymes which catalyse oxidoreduction between two substrates S and S. e.g., S REDUCED + S. oxidised `to`S oxidised + S. reduced. (2) Transferases : Enzymes catalysing a transfer of a group, G (other than hydrogen) between a pair of substrate S and S. e.g. `S - G + S. toS + S. - G` ( 3) Hydrolases : Enzymes catalysing hydrolysis of ester, ether, peptide, glycosidic, C-C, C-halide or P-N bonds. (4) Lyases : Enzymes that catalyse removal of groups from substrates by MECHANISMS other than hydrolysis leaving double bonds. `overset(X) overset(\|)C-overset(Y)overset(\|)C to X - Y + C = C` Isomerases : Includes all enzymes catalysing inter-conversion of optical, geometric or positional isomers. Ligases : Enzymes catalysing the linking together of 2 compounds, e.g., enzymes which catalyse joining of C-O, C-S, C-N, P-0 etc. bonds.

Question : How is naming of enzymes is done ? Describe types of enzymes with examples.