Lehninger Principles of Biochemistry
Lehninger Principles of Biochemistry
7th Edition
ISBN: 9781464126116
Author: David L. Nelson, Michael M. Cox
Publisher: W. H. Freeman
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Chapter 18, Problem 1P

(a)

Summary Introduction

To draw and name: The structure of α-keto acid which results from the transamination reaction of α-ketoglutarate with aspartate.

Introduction:

The α-amino acid is transferred to the a-carbon atom of α-ketoglutarate and leaves behind the corresponding α-keto acid is known as transamination reaction. This transfer of amino group is through the enzymes known as transferases or transaminases. 

(a)

Expert Solution
Check Mark

Answer to Problem 1P

Correct answer: Fig.1: Structure of oxaloacetate.

Lehninger Principles of Biochemistry, Chapter 18, Problem 1P , additional homework tip  1

Fig.1: Structure of oxaloacetate.

Explanation of Solution

Explanation:

The structure of α-keto acid which results from the reaction of amino acids with α-ketoglutarate is as follow:

α-ketoglutrate+aspartateoxaloacetate

The final product obtained from the reaction is oxaloacetate.

(b)

Summary Introduction

To draw and name: The structure of α-keto acid which results from the transamination reaction of α-ketoglutarate with glutamate.

Introduction:

The α-amino acid is transferred to the a-carbon atom of α-ketoglutarate and leaves behind the corresponding α-keto acidis known as transamination reaction. This transfer of amino group is through the enzymes known as transferases or transaminases.

(b)

Expert Solution
Check Mark

Answer to Problem 1P

Correct answer: Fig.1: Structure of α-ketoglutarate.

Lehninger Principles of Biochemistry, Chapter 18, Problem 1P , additional homework tip  2

Fig.1: Structure of α-ketoglutarate.

Explanation of Solution

Explanation:

The structure of α-keto acid which results from the reaction of amino acids with α-ketoglutarate is as follow:

α-ketoglutarate+glutamateα-ketoglutarate

The α-ketoglutarate is the final product obtained from the reaction.

(c)

Summary Introduction

To draw and name: The structure of α-keto acid which results from the transamination reaction of α-ketoglutarate with alanine.

Introduction:

The α-amino acid is transferred to the a-carbon atom of α-ketoglutarate and leaves behind the corresponding α-keto acid is known as transamination reaction. This transfer of amino group is through the enzymes known as transferases or transaminases. 

(c)

Expert Solution
Check Mark

Answer to Problem 1P

Correct answer: Fig.1: Structure of pyruvate.

Lehninger Principles of Biochemistry, Chapter 18, Problem 1P , additional homework tip  3

Fig.1: Structure of pyruvate.

Explanation of Solution

Explanation:

The structure of α-keto acid which results from the reaction of amino acids with α-ketoglutarate is as follow:

α-ketoglutarate+alaninepyruvate

Pyruvate is the final product obtained from the reaction.

(d)

Summary Introduction

To draw and name: The structure of α-keto acid which results from the transamination reaction of α-ketoglutarate with phenylalnine.

Introduction:

The α-amino acid is transferred to the a-carbon atom of α-ketoglutarate and leaves behind the corresponding α-keto acid is known as transamination reaction. This transfer of amino group is through the enzymes known as transferases or transaminases.

(d)

Expert Solution
Check Mark

Answer to Problem 1P

Correct answer: Fig.1: Structure of phenylpyruvate.

Lehninger Principles of Biochemistry, Chapter 18, Problem 1P , additional homework tip  4

Fig.1: Structure of phenylpyruvate.

Explanation of Solution

Explanation:

The structure of α-keto acid which results from the reaction of amino acids with α-ketoglutarate is as follow:

α-ketoglutarate+phenylalaninephenylpyruvate

phenylpyruvate is the final product obtained from the reaction.

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