BRAINCAKESecondary Structure
Each peptide bond is the result of a condensation reaction where a water molecule is removed from a -COOH and an NH2 group to form a covalent bond.
Each peptide bond is therefore a -CONH- group.
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Key terms in this lesson
- covalent bond
- A strong chemical bond formed when a pair of electrons is shared between two atoms.
- hydrogen bond
- A weak electrostatic attraction between a slightly positive hydrogen atom on one polar molecule and a slightly negative atom, such as oxygen or nitrogen, on another.
- condensation reaction
- A reaction that joins two molecules together with a covalent bond, with the elimination of a water molecule.
More in Biological Molecules
- Test for Lipids
- Amino-Acids
- Peptide Bond Formation
- Primary Structure
- Tertiary Structure
- Quaternary Structure
- Test for Proteins
- Globular and Fibrous Proteins
All 29 lessons in Biological Molecules · All AQA AS-level Biology topics