From: Protein Structure
Copyright © 1994, Bruce Alberts, Dennis Bray, Julian
Lewis, Martin Raff, Keith Roberts, and James D Watson.
NCBI Bookshelf. A service of the National Library of Medicine, National Institutes of Health.
Alberts B, Bray D, Lewis J, et al. Molecular Biology of the Cell. 3rd edition. New York: Garland Science; 1994.
Molecular Biology of the Cell. 3rd edition.
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Figure 3-30An α helix is another common structure formed by parts of the polypeptide chain in proteins
(A) The oxygen-carrying molecule myoglobin (153 amino acids long) is shown, with one region of α helix outlined in color. (B) A perfect α helix is shown in outline. (C) As in the β sheet, every peptide bond in an α helix is hydrogen-bonded to a neighboring peptide bond. Note that for clarity in (B) both the side chains [which protrude radially along the outside of the helix and are denoted by R in (C)] and the hydrogen atom are omitted on the α-carbon atom of each amino acid (see also Figure 3-31).
- Figure 3-30, An α helix is another common structure formed by parts of the polyp...Figure 3-30, An α helix is another common structure formed by parts of the polypeptide chain in proteins - Molecular Biology of the Cell
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