When [Et] = 20 nM and [SAD] = 40 µM, the reaction velocity, V0, is 9.6µM s1. Calculate Km for the substrate SAD.

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Chapter1: Biochemistry: An Evolving Science
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could you elaborate more on the process of step 2? it isn't explained vey well

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& ASK AN EXPERT
A CHAT
Vx MATH SOLVER
An
enzyme
is discovered that catalyzes the chemical reaction A team of motivated researchers sets out to
study the enzyme, which they call
happyase. They find that the kcat for happyase is 600 s and carry out several additional experiments.
When [Et] = 20 nM and [SAD] = 40 µM, the reaction velocity, V0, is 9.6µM s. Calculate Km for the substrate
-
SAD.
SAD = HAPPY
Transcribed Image Text: SAD = HAPPY
Expert Solution
Step 1
Enzymes are the biomolecules which acts as catalysts for many biochemical reactions and increases the
rate of reaction by decreasing the activation energy required for the reaction.
Step 2
In the given question, the given enzymatic reaction that is catalyzed by enzyme Happyase is:
SAD = HAPPY
The given concentration of substrate [SAD] is 40 uM, and enzyme concentration is 20 nM. The Kcat for
the enzyme is 600 /sec. The rate of reaction (Vo) is 9.6 uM/sec. The Km can be calculated as follows:
Vтахутах
TE; ]
Vmax[S
Km + [S
Кcat 3D
— Кcat x| E, Vтах — 600 x 20 х 10-3 риM/secVmax
12 иМ/secVo
Step 3
Hence, the Km for the substrate SAD is 10 µM.
Transcribed Image Text:Get live help whenever you need from online tutors! Try bartleby tutor today > Q SEARCH & ASK AN EXPERT A CHAT Vx MATH SOLVER An enzyme is discovered that catalyzes the chemical reaction A team of motivated researchers sets out to study the enzyme, which they call happyase. They find that the kcat for happyase is 600 s and carry out several additional experiments. When [Et] = 20 nM and [SAD] = 40 µM, the reaction velocity, V0, is 9.6µM s. Calculate Km for the substrate - SAD. SAD = HAPPY Transcribed Image Text: SAD = HAPPY Expert Solution Step 1 Enzymes are the biomolecules which acts as catalysts for many biochemical reactions and increases the rate of reaction by decreasing the activation energy required for the reaction. Step 2 In the given question, the given enzymatic reaction that is catalyzed by enzyme Happyase is: SAD = HAPPY The given concentration of substrate [SAD] is 40 uM, and enzyme concentration is 20 nM. The Kcat for the enzyme is 600 /sec. The rate of reaction (Vo) is 9.6 uM/sec. The Km can be calculated as follows: Vтахутах TE; ] Vmax[S Km + [S Кcat 3D — Кcat x| E, Vтах — 600 x 20 х 10-3 риM/secVmax 12 иМ/secVo Step 3 Hence, the Km for the substrate SAD is 10 µM.
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