Question

Distinguish between the different levels of protein structure, including primary, secondary, tertiary, and Question Prions are a type of protein implicated in bovine spongiform encephalopathy (BSE), also known as "mad cow disease," and related pathologies found in sheep (scrappie) and humans (Creutzfeldt-Jakob disease). The disease occurs when sections of an otherwise healthy protein misfold from alpha-helices to beta-pleated sheets, forming tightly packed sections of beta-pleated sheets that are difficult to break down. The disease propagates because the misfolded prions induce other healthy proteins to misfold as well. Which of the following levels of protein structure is the only one NOT affected by an infectious prion? Select the correct answer below: O primary O secondary O tertiary O quaternary FEEDBACK MORE INSTRUCTION SUBMIT Content attribution

Answer 1

a) option A is the correct option.

Primary structure is only linked sequence of amino acids. The change has occurred in their arrangement between the peptides. Alpha helices are kind of secondary structure which are formed due to intramolecular hydrogen bonding which is converted to beta pleated secondary structure in which intermolecular hydrogen bonding is observed. So secondary structure of protein is disturbed not the sequence of amino acids. When secondary structure is disturbed it will disturb the other higher two structures i.e. tertiary as well as quaternary structure.