Explore how one polypeptide folds into a unique three-dimensional tertiary structure stabilized by hydrogen, ionic, disulfide and hydrophobic R-group interactions in IB Biology HL B1.2.9.
The R-groups of amino acids are very diverse chemically. Interaction between R-groups in different parts of a polypeptide helps to determine the tertiary structure of a protein. List two types of interaction between R-groups.
hydrogen bonds;
ionic bonds;
disulfide bridges/disulfide (covalent) bonds;
hydrophobic interactions;
Mark the first two answers only.
Marking guidance:
Do not allow 'interactions' instead of 'bonds'
Do not allow 'bonds' instead of 'interactions'
Do not allow van der Waals forces.