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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Chapter 28, Problem 28.91CP

Interpretation Introduction

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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