Enzymes Flashcards
(29 cards)
Bind at the active site
Substrate
Changes the shape of the active site slightly for better bonding ability
Induced fit
Building – two substrates coming together
Anabolic
Breaking down – one substrate broken down to two or more products
Catabolic
Example of an anabolic reaction
Ligase
Example of a catabolic reaction
Catalase
Affects rate of enzyme activity
Substrate concentration (more substrate=More collisions)
Affects rate of enzyme activity
Enzyme saturation (more enzymes=Faster rate)
Binds to active site preventing substrate from attaching, can be reversible
Competitive inhibitor
Bind to non-active site and alters the enzymes active site so that the substrate can no longer bind
Noncompetitive inhibitor
Examples of noncompetitive inhibition that are irreversible
PH and temperature
Examples of noncompetitive inhibitors that are reversible
Allosteric inhibitors
Biological catalyst, lowers activation energy
Enzyme
Inorganic minerals, such as Fe, Cu, or Zn, that help catalyze reactions by binding to enzymes to change shape of active site
Cofactors
Organic (vitamins) molecules that bind to one or many types of enzymes to improve their function
Coenzymes
A group of enzymes that all catalyze the same substrate in different conditions
Isozymes
Tri-phosphate group from ATP is added into the enzyme changing it shape and possibly inactivating it
Phosphorylation (enzyme control mechanism)
The product of the process binds to the enzyme inactivating it
Feedback inhibition (enzyme control mechanism)
Similar to noncompetitive inhibition where a molecule binds to a non-active site to change the shape of the enzyme either activating or inactivating it
Allosteric regulation (enzyme control mechanism)
Breaks down carbohydrates, starches, and sugars which are prevalent and potatoes, fruits, vegetables, and many snackfoods
Amylase
Breaks down hydrogen peroxide
Catalase
Breaks down lactose, milk sugars
Lactase
Digests complex sugars and starches
Sucrose + water (hydrolysis)—-> glucose + fructose
Sucrase or invertase
Breaks down proteins found in meats, nuts, eggs, and cheese
Protease