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Michaelis-Menten reaktionskinetik - Steen Toft Jørgensen

Michaelis-Menten reaktionskinetik - Steen Toft Jørgensen

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<strong>Michaelis</strong>-<strong>Menten</strong> <strong>reaktionskinetik</strong><br />

><br />

http://en.wikipedia.org/wiki/<strong>Michaelis</strong>%E2%80%93<strong>Menten</strong>_kinetics#Derivation<br />

Differentialligningssystem:<br />

Differentialligningsystemet opskrives i Maple:<br />

><br />

><br />

><br />

><br />

Begyndelsesbetingelser:<br />

http://se.wtb.tue.nl/sewiki/biological_systems/de#michaelis-menten_kinetics<br />

(1)<br />

(2)<br />

(3)<br />

(4)


Forventet graf:<br />

http://se.wtb.tue.nl/sewiki/biological_systems/de#michaelis-menten_kinetics<br />

><br />

Numerisk løsning af differentialligninger:<br />

http://en.wikipedia.org/wiki/Numerical_ordinary_differential_equations<br />

(5)


http://en.wikipedia.org/wiki/Runge%E2%80%93Kutta_method<br />

Differentialligningssystemet løses numerisk (tilnærmet), da det ikke kan løses eksakt:<br />

><br />

><br />

>


S<br />

0<br />

0 10 20 30 40 50<br />

t


E<br />

0<br />

0 10 20 30 40 50<br />

t


ES<br />

0<br />

0 10 20 30 40 50<br />

t


P<br />

0<br />

0 10 20 30 40 50<br />

t


ECES<br />

0<br />

0 10 20 30 40 50<br />

t


Farver på den samlede graf:<br />

GRØN = [S]<br />

RØD = [P]<br />

CYAN = [ES]<br />

BLÅ = [E]<br />

SORT = [E] + [ES]<br />

0<br />

0 10 20 30 40 50<br />

t

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