michaelis menten kinetics specific Flashcards

1
Q

v

A

reaction velocity- rate of P formation

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2
Q

Vmax

A

ax velocity of which enzyme catalyse the reaction

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3
Q

Km

A

michaelis constant - [s] at 1/2 Vmax

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4
Q

system will not reach Vmax until

A

[s] is much bigger than Km

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5
Q

michaelis menten equation

A

V= Vmax x [s]
—————–
Km + [s]

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6
Q

what is Vmax equal to

A

Kcat

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7
Q

Kcat

A

catalyst rate constant

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8
Q

if we add more substrate rate of formation of P will

A

increase–> most enzymes follow this pattern and eventually Vmax will be reached

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9
Q

what does it mean for enzymes when Vmax is reached

A

all active sites are full

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10
Q

how can we increase Vmax

A

by adding more enzymes

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11
Q

Vmax is determined by

A

the amount of enzymes present

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12
Q

Km has the same units as

A

[s]

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13
Q

at some point Km must be equal to

A

[s]

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14
Q

km=

A

VMAX/2

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15
Q

if small Km

A

VMAX is reached at low [s]

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16
Q

if large Km

A

VMAX is reached at high [s]

17
Q

when Km is very small it can be

A

cancelled out of the equation all together, therefore so can the [s] on both sides and therefore V=VMAX

18
Q

when V=VMAX

A

system is running at Vmax all the time

19
Q

what is the M-M equation converts to when it comes to line weaver burk plot

A

an equation for a straight line

20
Q

at the y intercept

A

1/VMAX

21
Q

at the x intercept

A

-1/Km

22
Q

straight line equation

A

y=mx+ c

23
Q

hanes woolf..

A

provides more accuracy

24
Q

on hanes woolf gradient=

A

1/vmax

25
Q

on hanes woolf plot y intercept =

A

km/vmax