The case in which the third base of a codon is relevant is to be stated. The number of cases, in which third base is irrelevant out of the 16 possible combinations of the first and second bases and explanation for the same are to be stated. Concept Introduction: The amino acids are the functional unit of proteins. The different amino acids combine to form a wide range of proteins. Protein is required to maintain various activities and chemical reactions in the body. There are 20 amino acids found in nature.

Question

It is not unexpected that the methoxyl substituent on a cyclohexane ring prefers to adopt the equatorial conformation. OMe H A G₂ = +0.6 kcal/mol OMe What is unexpected is that the closely related 2-methoxytetrahydropyran prefers the axial conformation: H H OMe OMe A Gp=-0.6 kcal/mol Methoxy: CH3O group Please be specific and clearly write the reason why this is observed. This effect that provides stabilization of the axial OCH 3 group in this molecule is called the anomeric effect. [Recall in the way of example, the staggered conformer of ethane is more stable than eclipsed owing to bonding MO interacting with anti-bonding MO...]

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Chapter 26, Problem 26.98P

Interpretation Introduction

Interpretation:

The case in which the third base of a codon is relevant is to be stated. The number of cases, in which third base is irrelevant out of the 16 possible combinations of the first and second bases and explanation for the same are to be stated.

Concept Introduction:

The amino acids are the functional unit of proteins. The different amino acids combine to form a wide range of proteins. Protein is required to maintain various activities and chemical reactions in the body. There are 20 amino acids found in nature.

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