Definitions of Enzyme Classes Enzyme Classes Examples How do enzymes affect Mechanisms of Catalysis Substrate-enzyme specificity
100
oxidoreductase
What enzymes are responsible for redox reactions?
100
transferase
kinase, polymerase
100
increase
How do enzymes affect reaction rate?
100
cofactors
What is the general term for any species required by an enzyme to function?
100
substrate
What is the name for a molecule that is acted upon and converted to a product by an enzyme?
200
transferase
What enzymes transfer a functional group?
200
hydrolase
protease, phosphatase, lipase
200
no change
How do enzymes affect equilibrium?
200
prosthetic groups
Which non-protein species ARE permanently attached to enzymes and are REQUIRED by the enzyme to function?
200
active site
What is the part of an enzyme where the substrate is converted to product called?
300
ligase
What enzymes join two molecules together via covalent bonds?
300
isomerase
mutase, epimerase
300
decrease
How do enzymes affect energy of activation?
300
coenzymes
Which non-protein species are NOT permanently attached to enzymes BUT are REQUIRED by the enzyme to function?
300
Enzyme-substrate complex
What is the term for what is formed when the substrate is bound in the active site?
400
isomerase
What enzymes rearrange bonds of a molecule?
400
lyase
decarboxylase, aldolase
400
no change
How do enzymes affect Keq?
400
prosthetic groups
Heme and ubiquinone are common examples of which type of cofactor?
400
apoenzyme
Wildcard: What is a simple protein (only amino acids, no non-protein cofactors) that is an enzyme called?
500
lyase
What enzymes dissociate molecules without using water?
500
oxidoreductase
lactate dehydrogenase
500
no change
How do enzymes affect yield of a reaction?
500
Vitamins!
What are the most common coenzymes?
500
holoenzyme (ex. hemoglobin - contains non-protein heme group)
Wildcard: What is a conjugated protein (associated with cofactors) that is an enzyme called?






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