Multiple Choice
A protein with 3000+ amino acids obtained a mutation that caused an amino acid change in a region of the protein that does not normally interact with other molecules. What type of effect could this cause?
6. Proteins
Protein Folding
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An alpha helix is a protein folding pattern that is classified under which of the following protein structures?
A
Primary
B
Secondary
C
Tertiary
D
Quaternary
Verified step by step guidance1
Understand the levels of protein structure: Proteins have four levels of structure - primary, secondary, tertiary, and quaternary.
Define primary structure: The primary structure of a protein is its unique sequence of amino acids.
Define secondary structure: The secondary structure refers to local folded structures that form within a polypeptide due to interactions between atoms of the backbone. The most common types are alpha helices and beta sheets.
Identify the alpha helix: An alpha helix is a right-handed coil where each amino acid corresponds to a 100-degree turn in the helix, and it is stabilized by hydrogen bonds between the backbone atoms.
Conclude the classification: Since an alpha helix is a type of local folding pattern, it is classified under the secondary structure of proteins.
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