Final answer:
Proteins' helix structure is mainly stabilized by hydrogen bonds, crucial for the secondary structure of proteins like the alpha-helix.
Explanation:
The helix structure of proteins is primarily stabilized by hydrogen bonds. Hydrogen bonding plays a crucial role in maintaining the secondary structure of proteins like the alpha-helix. Other forces like disulfide linkages and van der Waals forces also contribute to stabilizing the tertiary structure of proteins, but hydrogen bonds are key in helix formations.
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