Question

 Distinguish between the different levels of protein structure, including primary, secondary, tertiary, and quaternary

 Question

 Is the following statement true? If not, explain why not:

 Since the secondary structure of a protein results from hydrogen bonding between components shared by all amino acids (a hydrogen on an amide N on one amino acid interacts with an oxygen on the carbonyl of another amino acid), the secondary structure does not depend on the specific amino acid groups (the R-groups) in the amino acid chain.

 Select the correct answer below:

 The statement is true.

 The statement is false, because the hydrogen bonds responsible for secondary structure are formed between components on the R-groups.

 The statement is false because secondary structure is caused by the formation of peptide bonds between adjacent amino acids, not hydrogen bonding.

 The statement is false because even though the R-groups are not responsible for the hydrogen bonding, they can still interact in ways that lead to a preferential secondary structure.

Answer 1

ANSWER:-

the first option is correct because ..the above statement is true.

because secondary structure of protein   refers to local folded structures that form within a polypeptide due to interactions between atoms of the backbone. (The backbone just refers to the polypeptide chain apart from the R groups – so all we mean here is that secondary structure does not involve R group atoms.) . Both structures are held in shape by hydrogen bonds, which form between the carbonyl O of one amino acid and the amino H of another.