Interpretation:
The main classes and subclasses of enzyme of that catalyze the first two steps in the conversion of tyrosine to epinephrine has to be determined.
Concept Introduction:
Hormones: Hormones are chemical messengers which are secreted by the cell in endocrine system and are transported along the blood to stimulate the target cells having the corresponding receptors.
Enzyme: Enzyme is a protein or a molecule which can act as a catalyst for a biological reaction. It does not affect the equilibrium point of the reaction. Enzyme’s activity can be specific which means the activity is limited to a certain substrate and a certain type of reaction and it is referred to as specificity of the enzyme.
Classification of enzymes:
- Oxidoreductases: Used to catalyze
oxidation-reduction reactions . - Transferases: Used to catalyze transfer of a functional group from one molecule to another.
- Hydrolases: Used to break a large molecule into smaller ones using water.
- Isomerases: Used to catalyze isomerization reactions.
- Lyases: Used to catalyze addition or removal of a small molecule.
- Ligases: Used to catalyze the bonding of two substrate molecules.
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