Concept explainers
Identify the
a. tyrosine (neutral, polar)
b. glutamate (acidic, polar)
c. methionine (neutral, nonpolar)
d. histidine (basic, polar)
e. cysteine (neutral, polar)
f. valine (neutral, nonpolar)
(a)
Interpretation:
The
Concept introduction:
Amino acids are organic compounds which combine sequentially to generate a protein. They are known as the building blocks of the human body. The main elements present in amino acids are carbon, nitrogen and oxygen while other elements are found in side chains.
Answer to Problem 19.3E
The
Explanation of Solution
Amino acids are formed by an amine and a carboxylic acid attached to a carbon atom with a characteristic side chain. The carboxylic acid in amino acids is usually in an ionic form and therefore is known as carboxylate group.
The structure of tyrosine is given below.
Figure 1
Therefore, the
Figure 2
The
(b)
Interpretation:
The
Concept introduction:
Amino acids are organic compounds which combine sequentially to generate a protein. They are known as the building blocks of the human body. The main elements present in amino acids are carbon, nitrogen and oxygen while other elements are found in side chains.
Answer to Problem 19.3E
The
Explanation of Solution
Amino acids are formed by an amine and a carboxylic acid attached to a carbon atom with a characteristic side chain. The carboxylic acid in amino acids is usually in an ionic form and therefore is known as carboxylate group.
The structure of glutamate is given below.
Figure 3
Therefore, the
Figure 4
The
(c)
Interpretation:
The
Concept introduction:
Amino acids are organic compounds which combine sequentially to generate a protein. They are known as the building blocks of the human body. The main elements present in amino acids are carbon, nitrogen and oxygen while other elements are found in side chains.
Answer to Problem 19.3E
The
Explanation of Solution
Amino acids are formed by an amine and a carboxylic acid attached to a carbon atom with a characteristic side chain. The carboxylic acid in amino acids is usually in an ionic form and therefore is known as carboxylate group.
The structure of methionine is given below.
Figure 5
Therefore, the
Figure 6
The
(d)
Interpretation:
The
Concept introduction:
Amino acids are organic compounds which combine sequentially to generate a protein. They are known as the building blocks of the human body. The main elements present in amino acids are carbon, nitrogen and oxygen while other elements are found in side chains.
Answer to Problem 19.3E
The
Explanation of Solution
Amino acids are formed by an amine and a carboxylic acid attached to a carbon atom with a characteristic side chain. The carboxylic acid in amino acids is usually in an ionic form and therefore is known as carboxylate group.
The structure of histidine is given below.
Figure 7
Therefore, the
Figure 8
The
(e)
Interpretation:
The
Concept introduction:
Amino acids are organic compounds which combine sequentially to generate a protein. They are known as the building blocks of the human body. The main elements present in amino acids are carbon, nitrogen and oxygen while other elements are found in side chains.
Answer to Problem 19.3E
The
Explanation of Solution
Amino acids are formed by an amine and a carboxylic acid attached to a carbon atom with a characteristic side chain. The carboxylic acid in amino acids is usually in an ionic form and therefore is known as carboxylate group.
The structure of cysteine is given below.
Figure 9
Therefore, the
Figure 10
The
(f)
Interpretation:
The
Concept introduction:
Amino acids are organic compounds which combine sequentially to generate a protein. They are known as the building blocks of the human body. The main elements present in amino acids are carbon, nitrogen and oxygen while other elements are found in side chains.
Answer to Problem 19.3E
The
Explanation of Solution
Amino acids are formed by an amine and a carboxylic acid attached to a carbon atom with a characteristic side chain. The carboxylic acid in amino acids is usually in an ionic form and therefore is known as carboxylate group.
The structure of valine is given below.
Figure 11
Therefore, the
Figure 12
The
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Chapter 19 Solutions
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