Enzymes Flashcards
Ligases?
responsible for joining two large biomolecules, often of the same type
Isomerases?
catalyze the interconversion of isomers, including both constitutional and stereoisomers
Lyases?
catalyze cleavage without the addition of water and without the transfer of electrons, the reverse reaction (synthesis) is usually more biologically important
Hydrolases?
catalyze cleavage with the addition of water
Oxidoreductases?
catalyze oxidation-reduction reactions that involve the transfer of electrons
Transferases?
move a functional group from one molecule to another molecule
Competitive inhibitors bind at the ______.
active site
Noncompetitive inhibitors bind at the _______.
allosteric site
Mixed inhibitors bind at the ______.
allosteric site
Uncompetitive inhibitors bind at the ______.
allosteric site
What do competitive inhibitors do to Km?
increase
What do noncompetitive inhibitors do to Km?
nothing
What do mixed inhibitors do to Km?
increase or decrease
What do uncompetitive inhibitors do to Km?
decrease
What do competitive inhibitors do to Vmax?
nothing
