Question

Difference between leucine and isoleucine structure

Answer 1

Answer:

Leucine and isoleucine are among the 20 amino acids found naturally in the human body. They are very similar in structure but have small differences which change their physiological properties.

Both of these amino acids are non-polar and aliphatic and have a four-carbon side chain emerging from the basic amino acid structure. The skeletal structure of leucine is shown below.

2nd diagram

The skeletal structure of isoleucine is shown below.

3rd diagram

Both contain the same carboxyl and amino functional groups and are of a similar size, but they have a different side chain layout. These are an example of structural isomers, where the carbon atoms are in different positions.

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