Rachelle Gay R. Pacial, MSN, RN
School of Nursing, Saint Louis University
Identify the chemical nature, classification,
and nomenclature of enzymes.
Describe typical enzymes
Discuss different enzyme activities
Describe factors affecting enzyme activities.
They do not
undergo changes
Enzymes catalyze all aspects of cell metabolism which includes:
Digestion of food, in which large nutrient
molecules, such as proteins, carbohydrates, and
fats, are broken down into smaller molecules;
Conservation and transformation of chemical
energy;
Construction of cellular macromolecules from
smaller precursors.
Ex.
Urease
NOMENCLATURE
AND
CLASSIFICATION OF
ENZYMES
RECOMMENDED
NAME
Ex. Urea
amidohydrolase
SYSTEMATIC NAME
TYPICAL ENZYMES
1
4
1
2
4
1
3
2
1
3
2
4
5. Effect of
Activators:
1
3
2
4
Some of the
enzymes require
certain inorganic
metallic cations,
like Mg2+, Mn2+,
Zn2+, Ca2+, Co2+,
Cu2+, Na+, K+
etc., for their
optimum activity.
Rarely, anions are
also needed for
enzyme activity,
e.g. a chloride ion
(CI–) for amylase.
Enzymes in the
digestive tract
So, what are
importance of
learning
enzymes?
1. For diagnosis of certain diseases
2. For treatment of infections
3. G6PD Deficiency diagnosis
Biological
Catalysts
(makes
them vital
to life
Chemical
Reactions
(metabolism
is controlled
by enzymes)
Therefore as a
biological catalyst,
enzymes are able to
speed up specific
chemical reactions
and therefore allow
metabolism to occur
at a rate fast enough
for life to occur.