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Introduction of Enzyme : Characteristics & Example !!


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ENZYME

Enzyme, in Greek means in living. (En=in, Zyme=living).

Coined by Wilhelm Kunhe, 1976.

DEFINITION

An enzyme is a protein molecule that is a biological catalyst that catalyzes chemical reaction.

enzyme

CHARACTERISTICS OF ENZYME

  1. Speed up chemical reaction.
  2. Enzymes are required in minute amounts.
  3. They are highly specific in their action.
  4. Affected by temperature.
  5. They are affected by pH.
  6. Some catalyse reversible reactions.
  7. Some requires co enzymes.
  8. Enzymes are inhibited by inhibitors.

TYPES OF ENZYMES

There are 6 Major types of enzymes. This is classified on the basis of reaction types.

  1. Oxidoreductase (dehydrogenasse).
  2. Transferase (kinase).
  3. Hydrolase (lipase, protease).
  4. Lyase (decarboxylase, aldolase).
  5. Isomerase (fumarase).
  6. Ligase (DNA ligase).

SPECIFICITY OF ENZYMES

Enzymes are highly specific in their action. Each enzymes acts on each substrate only.

It shows different types of specificity.

  • Bond specificity.
  • Group specificity.
  • Absolute specificity.
  • Optical specificity.
  • Dual specificity.

enzyme specificity

This is the general introduction about enzyme.

Thank you for reading.


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