Catalysis and Enzymatic Reactions
Catalysis is the kind of chemical reaction in which the rate (speed) of a reaction is enhanced by the catalyst which is not consumed during the process of reaction and afterward it is removed when the catalyst is not used to make up the impurity in the product. The enzymatic reaction is the reaction that is catalyzed via enzymes.
Lock And Key Model
The lock-and-key model is used to describe the catalytic enzyme activity, based on the interaction between enzyme and substrate. This model considers the lock as an enzyme and the key as a substrate to explain this model. The concept of how a unique distinct key only can have the access to open a particular lock resembles how the specific substrate can only fit into the particular active site of the enzyme. This is significant in understanding the intermolecular interaction between proteins and plays a vital role in drug interaction.
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![1. What is the stereochemical relationship between compounds 2-9 and compound 1?
HO-
HO-
H
--H
CH₂OH
10
14
18
CH
CH3
H
CH₂
Br
H
-H
CH₂CH₂
3
Me
Et
7
3. Assign stereochemistry to each stereogenic center in compound 10-21 and box any compounds that are meso.
Me
Me
11
Br
15
19
Br
1
H
CI-
CI
-H
CH₂CH₂
4
ii
Br
OH
12
CH₂
CH₂CH₂
16
H
20
Me
*]
2
-CI
CH₂CH₂
9
13
17
OH
21
OH
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