Enzymes Flashcards
Protein catalysts that increase the velocity of a chemical reaction and are not consumed during the reaction they catalyze
Enzymes
Physically distinct versions of a given enzyme each of which catalyze a the same reaction
Isosymes
Catalyze a the joining together of two molecules coupled to the hydrolysis of ATP
Ligamentum
Catalyze geometric or structural changes within a molecule
Isomer ashes
Catalyze cleavage of C-C, C-O, C-N and others by atom elimination leaving double bonds
Leases
Tue or False
Enzymes are consumed in the reaction it catalyzes
False
Cofactor distinguished by their tight, stable incorporation into a protein’s structure by covalent or noncovalent forces?
Prosthetic group
Not proteins
inorganic
bind in a transient dis sociable manner either to the enzyme or the substrate
Required for function
Ex. Iron in hemoglobin, copper in cytochrome oxidase
Cofactors
Serves as recyclable shuttles or group transfer agents that transport many substrates from their point of generation to their point of utilization, organic cofactors
Coenzyme
Enzyme only
Enzyme plus cofactors
Apoenzyme
Holoenzyme
True or false
Effectors are require for function
False
High Km means the substance has low or high affinity
Low
True or false Low Km means the substance has high substrate affinity
TRUE
Above the Km you follow the
Zero order or first order mechanics?
Zero order
Substrate is not affected by Substrate
Temperature increases/decreases reaction rate
Increases
