Questions: What level of protein structure is shown in the picture?
Quaternary
Primary
Tertiary
Secondary
Transcript text: What level of protein structure is shown in the picture?
Quaternary
Primary
Tertiary
Secondary
Solution
The answer is the first one: Quaternary.
Explanation for each option:
Quaternary: This level of protein structure involves the assembly of multiple polypeptide chains into a single functional unit. The image likely shows a complex structure that includes multiple subunits, which is characteristic of quaternary structure.
Primary: This level refers to the linear sequence of amino acids in a polypeptide chain. It is the most basic level of protein structure and does not involve any folding or complex assembly.
Tertiary: This level involves the three-dimensional folding of a single polypeptide chain, resulting in a specific shape. While complex, it does not involve multiple polypeptide chains coming together.
Secondary: This level includes local structures such as alpha-helices and beta-sheets formed by hydrogen bonding within the polypeptide chain. It is simpler than tertiary and quaternary structures.
Summary:
The image likely depicts a complex structure involving multiple polypeptide chains, which corresponds to the quaternary level of protein structure.