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BIOCHEM UNIT 2

QuestionAnswer
MIXED INHIBITON STATS LOWER VMAX, KM VAIRIES
NONCOMPETITIVE INHIBITION STATS LOWER VMAX, KM UNCHANGED
UNCOMPETITIVE INHIBITION STATS LOWER VMAX, LOWER KM
COMPETITIVE INHIBITION STATS VMAX UNCHANGED, HIGHER KM
How do you know if a compound is competitively inhibited? if it looks similar to the substrates
Km meaning Substrate concentration [S] at 1/2 Vmax
Vmax meaning maximal reaction rate /velocity of an enzyme catalyzed reaction
K cat meaning maximum number of substrate molecules converted to product per active site per unit of time
Specificity constant meaning ratio of catalytic speed to substrate binding affinity; good for low substrate levels
K cat equation V max/[E]
Specificity constant equation Kcat/Km
Specificity constant units M −1 s −1
Vmax units mM/sec
Km units mM
Kcat units s −1
What's the difference between noncompetitive and uncompetitive inhibition Uncompetitive binds to ES only, Noncompetitive binds to E and ES equally
Created by: Littlelamb300
 

 



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