1. Show, using the Michaelis-Menten equation, that when [S] >>> Km, vo = Vmax. Show, using...
1. Show, using the Michaelis-Menten equation, that when [S] >>> Km, vo = Vmax. Show, using the M-M equation that when [S] <<<Km, vo =[S][Et]kcat/Km.
2. What is Vmax? Provide both a mathematical and written description of Vmax? How can Vmax be experimentally altered? How can we use Vmax to determine the turnover number (kcat) of an enzyme-catalyzed reaction? What is the major challenge of determining Vmax from an Michaelis-Menten plot?
Homework Answers
![1.) Michaeling-Menten equations u= max [] K+ [s] Cax I: when [s] »km , then we can write [s] + km 2 (s] So, vo= man es may ma](http://img.homeworklib.com/questions/2f9a5420-d959-11eb-bd4f-6fcf917b56c3.png?x-oss-process=image/resize,w_560)
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1. Show, using the Michaelis-Menten equation, that when [S]
>>> Km, vo = Vmax. Show, using...
The equation that describes the above Michaelis-Menten curve: Vo TS]+K Vmax [S] Michaelis-Menten Equation Lineweaver and...
The equation that describes the above Michaelis-Menten curve: Vo TS]+K Vmax [S] Michaelis-Menten Equation Lineweaver and Burke manipulated the Michaelis-Menten equation to yield: Ko V I S Vmax [S] Lineweaver-Burke Equation Linewenver Burke Equation If you plot 1/ V. vs. 1/[S], you get the following Lineweaver-Burke plot: 1/V. Slope = km/Vmax Intercept = -1/KM -Intercept = 1/Vmax 1/[S] Which is easier to calculate values for Km and Vmax, using the linear (y=mx+b) Lineweaver-Burke Plot or the Michaelis-Menten curve?
The kinetics of enzyme catalyzed reactions can be described the Michaelis-Menten equation and the Eadie-Hofstee equatio...
The kinetics of enzyme catalyzed reactions can be described the Michaelis-Menten equation and the Eadie-Hofstee equation as shown below: V0 = (-Km) V0 / [S] + Vmax a). Please derive the Eadie-Hofstee equation starting from the Michaelis-Menten equation. b). The Vmax and Km of the enzyme catalyzed reaction can be derived from a plot of V0 versus V0/[S]. Please draw one of these plots and explain how do you use it to derive Vmax and Km. c). Please draw a...
1. According to the Michaelis-Menten equation, when is the reaction velocity at half the maximal value...
1. According to the Michaelis-Menten equation, when is the reaction velocity at half the maximal value (vo = 0.5 Vmax) A. when [S] = 0.5 Km B. when [S] = 1.0 Km C. when vo = kcat [E] D. when vo = kcat / Km 2. The value of Vmax depends on ... A. k1 and k-1 B. k1 and k2 C. k1 only D. k2 only 3. When is Km approximately equal to Kd? A. when k1 is much...
Kcat =30.0 s-1 Km= 0.005 M Operating at 1/4 Vmax What is [S] ? The solutions...
Kcat =30.0 s-1
Km= 0.005 M
Operating at 1/4 Vmax
What is [S] ?
The solutions manuel doesn't explain the problem well. Whete
does the 0.33 km come from?
For part 2 : Plug in [S]= 1/2 Km, 2 Km, and 10 Km
Where does the 1.5 Km come from?
Answer (a) Here we want to find the value of [S] when Vo = 0.25 V max. The Michaelis-Menten equation is V = Vmax[S]/(Km + [SD so V = Vmax...
The Michaelis-Menten equation is often used to describe the kinetic characteristics of an enzyme-catalyzed react...
The Michaelis-Menten equation is often used to describe the kinetic characteristics of an enzyme-catalyzed reaction. S Where v is the velocity or rate, Vmax is the maximum velocity, Km is the +IST Michaelis- Menten constant, and I5 s the substrate concentration. K + S v (uM/min) a) A graph of the Michaelis-Menten equation is a plot of a reaction's initial velocity (Vo) at different substrate concentrations ([S]) 300 Vmax 250 1/2 Vmax First, move the line labeled "Vmax to a...
(I need help with part C, Drawing the expected Michaelis-Menten plot; Do NOT draw the Lineweaver-Burk...
(I need help with part C, Drawing the expected Michaelis-Menten plot; Do NOT draw the Lineweaver-Burk plot. thanks!) 1. Michaelis-Menten kinetics- use the M-M equation to answer the following: a. An enzyme (5 µM) has a Vmax of 450 mM/min. What is kcat? b. When the substrate concentration is 50 mM, the initial velocity (V0) was measured to be 375 mM/min. Under the conditions described above, calculate the KM. c. Draw the expected Michaelis-Menten plot (label your axes and include...
4. Basic concepts of Michaelis-Menten kinetics. The Michaelis-Menten equation is expression of the relationship between the...
4. Basic concepts of Michaelis-Menten kinetics. The Michaelis-Menten equation is expression of the relationship between the initial velocity, Vo, of an enzymatic reaction and substrate concentration, [S]. There are three conditions that are useful for simplifying the Michaelis-Menten equation: [S] <<Km; [S] = Km; [S] >> Km. Match each condition with the statement(s) that describe it. TV, Vmox[S] Vo =Vmax m . V Vo - Vmax [S] Km +[S] V. (um/min) max [S] (mm) (a) Doubling [S] will almost double...
1. MICHAELIS-MENTON-(REQUIRED) a. Draw a simple graph, showing the classic Michaelis-Menton plot of enzyme activity as...
1. MICHAELIS-MENTON-(REQUIRED) a. Draw a simple graph, showing the classic Michaelis-Menton plot of enzyme activity as a function of substrate concentration; label both axes. Write the associated Michaelis-Menton equation and show the location of Km and Vmax on your graph. b. Draw a second graph showing the classic Lineweaver-Burk plot; label both axes. Show the location of Km and Vmax on your graph. Discuss which plot is the most useful to determine Vmax. Draw a second line on each graph...
What is the velocity of a Michaelis-Menten enzyme reaction (in terms of vmax) when the concentration...
What is the velocity of a Michaelis-Menten enzyme reaction (in terms of vmax) when the concentration of substrate is 4 times the value of KM? Show your work.
D-Lactose is the substrate for B-galactosidase. Given Vo = kcat [Et] [S]/km + [S], calculate [S],...
D-Lactose is the substrate for B-galactosidase. Given Vo = kcat [Et] [S]/km + [S], calculate [S], when Km = 4.0 nM, V. = 10.5 M s', kcat = 500 s, and [Et] = 40 uM Calculate the catalytic efficiency. Below is a double-reciprocal plot for an enzyme reaction in the absence and presence of of inhibitor. Give the equation for the line. Calculate Vmax and Km for the enzyme and enzyme plus inhibitor. Which type of inhibition is apparent. 0.10...
The equation that describes the above Michaelis-Menten curve: Vo TS]+K Vmax [S] Michaelis-Menten Equation Lineweaver and Burke manipulated the Michaelis-Menten equation to yield: Ko V I S Vmax [S] Lineweaver-Burke Equation Linewenver Burke Equation If you plot 1/ V. vs. 1/[S], you get the following Lineweaver-Burke plot: 1/V. Slope = km/Vmax Intercept = -1/KM -Intercept = 1/Vmax 1/[S] Which is easier to calculate values for Km and Vmax, using the linear (y=mx+b) Lineweaver-Burke Plot or the Michaelis-Menten curve?
Kcat =30.0 s-1
Km= 0.005 M
Operating at 1/4 Vmax
What is [S] ?
The solutions manuel doesn't explain the problem well. Whete
does the 0.33 km come from?
For part 2 : Plug in [S]= 1/2 Km, 2 Km, and 10 Km
Where does the 1.5 Km come from?
Answer (a) Here we want to find the value of [S] when Vo = 0.25 V max. The Michaelis-Menten equation is V = Vmax[S]/(Km + [SD so V = Vmax...
The Michaelis-Menten equation is often used to describe the kinetic characteristics of an enzyme-catalyzed reaction. S Where v is the velocity or rate, Vmax is the maximum velocity, Km is the +IST Michaelis- Menten constant, and I5 s the substrate concentration. K + S v (uM/min) a) A graph of the Michaelis-Menten equation is a plot of a reaction's initial velocity (Vo) at different substrate concentrations ([S]) 300 Vmax 250 1/2 Vmax First, move the line labeled "Vmax to a...
4. Basic concepts of Michaelis-Menten kinetics. The Michaelis-Menten equation is expression of the relationship between the initial velocity, Vo, of an enzymatic reaction and substrate concentration, [S]. There are three conditions that are useful for simplifying the Michaelis-Menten equation: [S] <<Km; [S] = Km; [S] >> Km. Match each condition with the statement(s) that describe it. TV, Vmox[S] Vo =Vmax m . V Vo - Vmax [S] Km +[S] V. (um/min) max [S] (mm) (a) Doubling [S] will almost double...
1. MICHAELIS-MENTON-(REQUIRED) a. Draw a simple graph, showing the classic Michaelis-Menton plot of enzyme activity as a function of substrate concentration; label both axes. Write the associated Michaelis-Menton equation and show the location of Km and Vmax on your graph. b. Draw a second graph showing the classic Lineweaver-Burk plot; label both axes. Show the location of Km and Vmax on your graph. Discuss which plot is the most useful to determine Vmax. Draw a second line on each graph...
D-Lactose is the substrate for B-galactosidase. Given Vo = kcat [Et] [S]/km + [S], calculate [S], when Km = 4.0 nM, V. = 10.5 M s', kcat = 500 s, and [Et] = 40 uM Calculate the catalytic efficiency. Below is a double-reciprocal plot for an enzyme reaction in the absence and presence of of inhibitor. Give the equation for the line. Calculate Vmax and Km for the enzyme and enzyme plus inhibitor. Which type of inhibition is apparent. 0.10...
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