A. What change should disrupt the interaction between proteins 1 and 2 the most? Why? B. What change would disrupt the interaction between proteins 1 and 2 the least? Why?

Biochemistry
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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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A. What change should disrupt the interaction between proteins 1 and 2 the most? Why?

B. What change would disrupt the interaction between proteins 1 and 2 the least? Why?

Expert Solution
Step 1

Introduction:

Proteins are the polymers of L-α-amino acids. Proteins plays an important role in the formation and function of cells.

Example: DNA ligase

Step 2

Explanation:

The side chain of arginine protein 1 has a positive charge while the side chain of amino acid glutamic acid side chain of protein 2 has a negative charge. 
The most probable interaction between these two amino acids is an ionic bond, for example an attractive power between the positive and negative charge. 

A.

When the amino acid of protein 2 were mutated to an amino acid with a positive charge. For example, lysine, at that point the positive charges of the arginine of protein 1 and the lysine of protein 2 would repulse one another. Lysine would be the most disrupted to protein-protein interaction. 

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