The one that does not stabilize and structures of proteins is

Question

The one that does not stabilize  and  structures of proteins is

Canvas Classes · Accepted Answer

Forces stabilizing protein secondary and tertiary structures:

| Interaction | Stabilizes 2° | Stabilizes 3° |
|---|---|---|
| H-bonding | ✓ (-helix, -sheet) | ✓ |
| –S–S– (disulfide) linkage | — | ✓ (covalent cross-links in tertiary) |
| van der Waals forces | — | ✓ (hydrophobic interactions) |
| –O–O– (peroxide) linkage | ✗ | ✗ |

–O–O– (peroxide) linkage does NOT exist in proteins. Proteins contain:
- –S–S– bonds (from cysteine residues)
- –NH–CO– (peptide bonds, primary structure)
- Hydrogen

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