Biological Science (7th Edition)
Biological Science (7th Edition)
7th Edition
ISBN: 9780134678320
Author: Scott Freeman, Kim Quillin, Lizabeth Allison, Michael Black, Greg Podgorski, Emily Taylor, Jeff Carmichael
Publisher: PEARSON
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Chapter 3, Problem 6TYU
Summary Introduction

To review:

The mechanism used by molecular chaperones to facilitate protein folding in many different polypeptides, each with their own specific shape.

Introduction:

The molecular chaperones are a large family of highly conserved proteins that help in covalent folding or unfolding of proteins.

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The amide hydrogen atoms of peptide bonds within proteins can exchange with protons in the solvent. In general, amide hydrogen atoms in buried regions of proteins and protein complexes exchange more slowly than those on the solvent-accessible surface do. Determination of these rates can be used to explore the proteinfolding reaction, probe the tertiary structure of proteins, and identify the regions of protein–protein interfaces. These exchange reactions can be followed by studying the behavior of the protein in solvent that has been labeled with deuterium ( ²H), a stable isotope of hydrogen. What two methods described in this chapter could be readily applied to the study of hydrogen– deuterium exchange rates in proteins?
Explain how these mechanisms affect protein diversity.
Describe the general structure of a type 2 alpha helix protein. Explain how type 2 alpha helix transmembrane domains can be used to form pathways for large polar and charged molecules to traverse the lipid bilayer of the cell membrane.
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Biomolecules - Protein - Amino acids; Author: Tutorials Point (India) Ltd.;https://www.youtube.com/watch?v=ySNVPDHJ0ek;License: Standard YouTube License, CC-BY