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Topic: need help with enzyme kinetics homework (Read 3579 times)
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wow
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need help with enzyme kinetics homework
«
on:
March 08, 2013, 05:21:51 PM »
Suppose an enzyme alters the ΔG‡ of a reaction from 52 kJ mol-1 to 27 kJ mol-1.
How much faster will the catalyzed reaction proceed at 300.6K as compared to the
uncatalyzed reaction? Show your work. Remember: at 300.6K, RT = 2.5 kJ mol-1.
a.
If the enzyme in (a) is exposed to a mixed inhibitor, would you expect the
rate-enhancement to change? Why or why not?
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Babcock_Hall
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Re: need help with enzyme kinetics homework
«
Reply #1 on:
March 08, 2013, 05:42:14 PM »
It is a forum rule that you must show your work. Do you know what a mixed inhibitor is? Do you have a conceptual idea of what ΔG‡ is?
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wow
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Re: need help with enzyme kinetics homework
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Reply #2 on:
March 11, 2013, 02:56:53 PM »
yes
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Babcock_Hall
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Re: need help with enzyme kinetics homework
«
Reply #3 on:
March 11, 2013, 04:38:57 PM »
OK, good, but you still need to show your attempt at these two problems. Forum rule. Do you know any equations involving ΔG‡? When you add a mixed inhibitor to an enzyme-catalyzed reaction, what do you observe?
«
Last Edit: March 11, 2013, 05:02:40 PM by Babcock_Hall
»
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wow
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Re: need help with enzyme kinetics homework
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Reply #4 on:
March 11, 2013, 05:26:54 PM »
no i dont im sorry i forgot them
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Borek
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Re: need help with enzyme kinetics homework
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Reply #5 on:
March 11, 2013, 05:55:38 PM »
Then open your book or notes and check them.
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ChemBuddy
chemical calculators - stoichiometry, pH, concentration, buffer preparation,
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wow
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Re: need help with enzyme kinetics homework
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Reply #6 on:
March 11, 2013, 07:00:40 PM »
delta g =-RTlnkeq
also ln k= lnQ- delta G double dagger/ RT. I just cant figure out how to setup up the formula correctly for the first part in order to plug in the numbers. i know its the arrhenius forumula but cant seem to figure out how to use the info given. can you help by suggesting a formula which i can plug in the number s ( i learn backwards usually..)
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