ENZYME ACTION

Enzyme Types & Nature of Enzyme Action !!


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TYPES OF ENZYME

Oxidoreductases

Transfer hydrogen and oxygen atoms or electrons from one substrate to another

Transferases

Transfer phosphate or methyl group from one substrate to another

Hydrolases

Hydrolysis a substrate

Isomerases

Change molecular form of the substrate

Lyases

Non-hydrolytic removal of a group or addition of a group to a substrate

 Ligases

Join two molecules by the formation of new bonds

NATURE OF ENZYME ACTION

Each enzyme has an active site to which substrate binds and forms a short lived highly reactive enzyme substrate complex.

Enzyme_mechanism_1

FACTOR AFFECTING ENZYME ACTIVITY

Temperature

Enzymes generally function in a narrow range of temperature

Temperature at which the enzyme shows its highest activity known as optimum temperature.

temperature

Hydrogen ion concentration (pH)

Every enzyme has an optimum pH when it is most effective

A rise or fall in pH reduces enzyme activity

ph

Concentration of substrate

Increase in substrate concentration, increases the velocity of the enzymatic reaction

subtrate-concentration-rate-of-reaction

Km (Michaels constant)

Concentration of substrate at which half the maximum velocity of the enzyme reaction is attained.

Michaelis-Menten

This is the general  notes on enzyme types and the nature of enzyme action.

Thank you for reading.


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