enzymes 2

By the end of the lecture, the student should be able to :
Define enzymes and related terms ( active site, apoenzyme, holoenzyme, prosthetic group, enzyme specificity).
Explain the energy of activation.
Describe the structure of enzymes.
Know the Mechanism of action
Explain the Classification of enzymes
Enzymes play an important role in Metabolism, Diagnosis, and Therapeutics.
All biochemical reactions are enzyme catalyzed in the living organism.
Level of enzyme in blood are of diagnostic importance e.g. it is a good indicator in disease such as myocardial infarction.
Enzyme can be used therapeutically such as digestive enzymes.
Enzymes are proteins that increase the rate of reaction by lowering the energy of activation

They catalyze nearly all the chemical reactions taking place in the cells of the body.

Not altered or consumed during reaction.

Reusable

Active site:The area on the enzyme where the substrate or substrates attach to is called the active site.
Enzymes are usually very large proteins and the active site is just a small region of the enzyme molecule.