For the data below plot using graph paper or software a Line
For the data below, plot (using graph paper or software) a Lineweaver-Burke plot of the data in order to determine the KM and Vmax of the enzyme in the presence and absence of inhibitor. Is this inhibitor: competitive, noncompetitive, uncompetitive, or irreversible?
[s] mM. v° w/o inhibitor. v°w/inhibitor
1. 2.5. 1.17
2. 4.0. 2.10
5. 6.3. 4.00
10. 7.6. 5.7
20 9.0. 7.2
micoM/s. microM/s
Solution
s v-i v+i 1/s 1/v-i 1/v+i
1 2.5 1.17 1 0.4 0.854700855
2 4 2.1 0.5 0.25 0.476190476
5 6.3 4 0.2 0.158730159 0.25
10 7.6 5.7 0.1 0.131578947 0.175438596
20 9 7.2 0.05 0.111111111 0.138888889
vmax(-i) 10.13171226 km(-i) 3.056737589
vmax(+i) 10 km(+i) 7.541
where vmax(-i),km(-i)=without inhibitor
vmax(i),km(+i)-with inhibitor
as km with inhibitor is greater then km without inhibitor it is competitive inhibitor
