What is the impact of new km value 0.1mM compared to previous km value 0.05mM on affinity of the enzyme for substrate?

Biochemistry
9th Edition
ISBN:9781319114671
Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Chapter1: Biochemistry: An Evolving Science
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What is the impact of new km value 0.1mM compared to previous km value 0.05mM on affinity of the enzyme for substrate?
Michaelis Menten Plot.als (Compatibility Model - Microso
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BIU - A
FI ER Merge & Center
S% A
Conditional Form
Formatting- as Tabi
Cipboard
Fent
Agnment
C20
K L M
C D
Calc. Vo
A
F.
G
H
1 (Ethanol)
Vo
delta 2
0.007
0.06
0.020242 0.001581
035
3
0.015
0.11
0.040357 0.00485
4
0.031
0.16
0.073219 0.007531
03
0.068
0.21
0.125236 0.007185
025
6
0.1
0.23
0.154704 0.00567
0.2
0.28
0.206272 0.005436
0.2
0.3
0.29
0.232056 0.003358
0.28
0.247526 0.001055
Calc. Vo
0.4
0.15
10
0.036664
01
11
Km
0.1
12
Vmax
0.309407
0.05
13
14
16
0.1
02
0.3
0.4
0.5
17
18
19
Fig. 9. Michaelis-Menten Plot using a value of 0.1 mM for Km.
Notice: 1) that a new set of calculated values in column C has been generated and
2) that by using these new data a new best fit Michaelis-Menten plot (red curve)
has been generated.
Fig. 9 shows that the rates for the new enzyme-catalyzed reaction (red curve) were
even lower than those obtained with a value of Km of 0.05 mM (red curve in Fig. 8).
Transcribed Image Text:Michaelis Menten Plot.als (Compatibility Model - Microso Home Insert Page Layout Formulas Data Review Acrobat * Cut a Copy Format Painter Calibri 11 AA Wrap Text General BIU - A FI ER Merge & Center S% A Conditional Form Formatting- as Tabi Cipboard Fent Agnment C20 K L M C D Calc. Vo A F. G H 1 (Ethanol) Vo delta 2 0.007 0.06 0.020242 0.001581 035 3 0.015 0.11 0.040357 0.00485 4 0.031 0.16 0.073219 0.007531 03 0.068 0.21 0.125236 0.007185 025 6 0.1 0.23 0.154704 0.00567 0.2 0.28 0.206272 0.005436 0.2 0.3 0.29 0.232056 0.003358 0.28 0.247526 0.001055 Calc. Vo 0.4 0.15 10 0.036664 01 11 Km 0.1 12 Vmax 0.309407 0.05 13 14 16 0.1 02 0.3 0.4 0.5 17 18 19 Fig. 9. Michaelis-Menten Plot using a value of 0.1 mM for Km. Notice: 1) that a new set of calculated values in column C has been generated and 2) that by using these new data a new best fit Michaelis-Menten plot (red curve) has been generated. Fig. 9 shows that the rates for the new enzyme-catalyzed reaction (red curve) were even lower than those obtained with a value of Km of 0.05 mM (red curve in Fig. 8).
Your worksheet and graph should look similar to the figure below.
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Number
C16
B
G
H
K
M
1 [Ethanol]
Vo
Calc. Vo delta^2
2.
0.007
0.06
0.037997 0.000484
0.35
0.015
0.11
0.071402
0.00149
4
0.031
0.16
0.118415 0.001729
0.3
5
0.068
0.21
0.178303 0.001005
0.25
0.1
0.23
0.206272 0.000563
0.2
0.28
0.247526 0.001055
0.2
0.3
0.29
0.265206 0.000615
• Vo
0.4
0.28
0.275029 2.47E-05
0.15
Calc. Vo
10
0.006965
0.1
11
Km
0.05
12
Vmax
0.309407
0.05
13
14
16
0.1
0.2
0.3
0.4
0.5
17
18
Fig. 8. Michaelis-Menten Plot using a value of 0.05 mM for Km.
lotice: 1) that a new set of calculated values in column C has been generated anc
Transcribed Image Text:Your worksheet and graph should look similar to the figure below. Michaelis Menten Plot.ds [Compatibility Mode] - Microsot Home Insert Page Layout Formulas Data Review View Add-Ins Acrobat * Cut Wrap Text General Calibri Copy Conditional Forma Paste BIU- E Merge & Center Format Painter Formatting as Tabl Clipboard Font Alignment Number C16 B G H K M 1 [Ethanol] Vo Calc. Vo delta^2 2. 0.007 0.06 0.037997 0.000484 0.35 0.015 0.11 0.071402 0.00149 4 0.031 0.16 0.118415 0.001729 0.3 5 0.068 0.21 0.178303 0.001005 0.25 0.1 0.23 0.206272 0.000563 0.2 0.28 0.247526 0.001055 0.2 0.3 0.29 0.265206 0.000615 • Vo 0.4 0.28 0.275029 2.47E-05 0.15 Calc. Vo 10 0.006965 0.1 11 Km 0.05 12 Vmax 0.309407 0.05 13 14 16 0.1 0.2 0.3 0.4 0.5 17 18 Fig. 8. Michaelis-Menten Plot using a value of 0.05 mM for Km. lotice: 1) that a new set of calculated values in column C has been generated anc
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