Question
The same five forces at work in the tertiary structure can also act to on the quaternary structure. (____)
Answer
The same five forces at work in the tertiary structure can also act to on the quaternary structure. (True)
Note: Five forces contribute to the tertiary structure: 1. covalent disulfide bonds between two cysteine amino acids on different parts of the chain, creating the dimer cystine; 2. electrostatic (ionic) interactions, mostly between acidic and basic side chains; 3. hydrogen bonds; 4. van der Waals forces; and 5. hydrophobic side chains pushed away from water toward the center of the protein (hydrophobic bonding).
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