/*! This file is auto-generated */ .wp-block-button__link{color:#fff;background-color:#32373c;border-radius:9999px;box-shadow:none;text-decoration:none;padding:calc(.667em + 2px) calc(1.333em + 2px);font-size:1.125em}.wp-block-file__button{background:#32373c;color:#fff;text-decoration:none} Q3CP Question:聽Explain why the confo... [FREE SOLUTION] | 91影视

91影视

Log out

Learning Materials

Features

Discover

Chapter 6: Q3CP (page 145)

Question:Explain why the conformational freedom of peptide bonds is limited.

Short Answer

Expert verified

The peptide bond's conformational freedom is limited due to a partial double bond character.

Step by step solution

01

Protein conformation

The condensation reaction(loss of water molecule) forms the peptide bond of protein. The protein conformation is the three-dimensional arrangement of atoms in the protein structure.

02

Conformational freedom of peptide bond

The peptide group has a rigid, planar structure resulting from resonance interactions that give the peptide bond approximately 40% double-bond character.The lone pairs of nitrogen are involved in resonance with the carbonyl group. It is observed that a peptide group's C-N bond is 0.13 脜 shorter than its single bond and that its C=O bond is 0.02 脜 longer than that of aldehydes and ketones; therefore, rotation is only possible for alpha carbon.

Hence, conformational freedom of the peptide bond is limited due to a partial double bond character in the peptide bond

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Over 30 million students worldwide already upgrade their learning with 91影视!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

Under physiological conditions, polylysine assumes a random coil conformation. Under what conditions might it form an 伪 helix?

Globular proteins are typically constructed from several layers of secondary structure, with a hydrophobic core and a hydrophilic surface. Is this true for a fibrous protein such as 伪 keratin?

Describe the features of the amino acid sequences that are necessary to form a coiled coil or a left-handed triple helix.

Helices can be described by the notation nm , wheren is the number of residues per helical turn andm is the number of atoms, includingH , in the ring that is closed by the hydrogen bond.

(a) What is this notation for the helix?

(b) Is the310 helix steeper or shallower than the helix?

The digestive tract of the larvae of clothes moths is a strongly reducing environment. Why is this beneficial to the larvae?
See all solutions

Recommended explanations on Biology Textbooks

Chemistry of Life

Read Explanation

Biology Experiments

Read Explanation

Biological Processes

Read Explanation

Substance Exchange

Read Explanation

Ecological Levels

Read Explanation

Biological Molecules

Read Explanation
View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.