Question

Select the level of structure that brings Phe 106 into contact with each of the residues

residue 36 (histidine): primary, secondary, tertiary

residue 102 (lysine): primary, secondary, tertiary

Answer 1

Since, phenylalanine is non- polar and hydrophobic, it is bounded by residue 36 (histidine) and residue 102 on its two sides so as to protect it from solvent such as water. Histidine is polar and lysine is charged, so they get in contact with the outer aqueous environment and thus protecting phenylalanine.

So, the level of structure that brings Phe 106 into contact with residue 36 (histidine) and residue 102 (lysine) is the tertiary structure which is found in myoglobin.