Two proteins associated with a rare neurodegenerative disorder have been sequenced.Protein A contains many polar amino acids with small regions containing nonpolar,hydrophobic amino acids.Protein B is rich in nonpolar,hydrophobic amino acids with only two small regions containing polar amino acids.What might this suggest about the two proteins?
A)The two proteins may have different secondary structures.
B)Protein A is fibrous and Protein B is globular.
C)Protein A may be a cytoplasmic protein and Protein B may be a membrane associate protein.
D)Protein A and Protein B are complementary parts of a supramolecular structure.
E)Protein A is most likely and enzyme and Protein B is most likely a storage protein.

Question

Quizplus · Accepted Answer

Protein A, with many polar amino acids, is likely soluble in the cytoplasm, while Protein B, rich in hydrophobic amino acids, is likely associated with membranes, where it can interact with the lipid bilayer.

Two Proteins Associated with a Rare Neurodegenerative Disorder Have Been