Essential Cell Biology
4th Edition
ISBN: 9780815344544
Author: Keith Roberts, Karen Hopkin, Alexander D Johnson, Martin Raff, Dennis Bray, Bruce Alberts, Julian Lewis, Peter Walter
Publisher: TAYLOR
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Chapter 4, Problem 21Q
Summary Introduction
To determine: Whether the α-helix and coiled-coil have the same handedness.
Concept introduction: α-helix is the right-handed spiral structure, where the side-chains extend outwards and are stabilized by hydrogen bonds between the carbonyl oxygen and amide hydrogen. A stable structure known as coiled-coil is a structural motif in which two or three α-helices will coil around one another.
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