Identify the level of protein structure associated with each of the following:
b. hydrogen bonding between backbone atoms

Question

Identify the level of protein structure associated with each of the following:

b. hydrogen bonding between backbone atoms

Accepted Answer

All right. Hello everyone. So this question says to determine the level of protein structure characterized by the overall folding and three dimensional shape formed by interactions such as hydrophobic interactions, ionic bonds and disulfide bridges. Option A says primary structure B says secondary structure sees his tertiary structure and D says ordinary structure. So let's start this question with a quick summary of the different levels of protein folding. So we have from the primary structure to the co ordinary structure. Now, primary structure, if you recall refers only to the amino acid sequence that makes up the polypeptide from there, the amino acid sequence begins folding and that's how we get our secondary structure, which can be summarized as local folding. The reason why it's known as local folding is because it involves atoms of the peptide bond backbone that makes up the polypeptide and structural elements of secondary structure involve things like the alpha helices and the beta pleated sheets stabilized by hydrogen bonding. So it's important to note here as well. Now, it's at the tertiary structure that we get a little bit more complex because the tertiary structure involves interactions between these side chains of amino acids, this is going to result in the overall 3d shape of one polypeptide chain. So because tertiary structure is concerned with interactions between side chains and the side chains of amino acids have their own properties such as polarity and so on, multiple different interactions are possible. So at this point, we've covered up to the tertiary structure which is present in all proteins, but not all proteins have a ordinary structure. And that's because not all proteins are composed of more than one subunit. So ordinary structure is the arrangement of multiple different subunits. In other words, it's the arrangement of multiple different polypeptide chains that combine to create a functional larger protein complex. So again, not true of all proteins. So going back to the statement given which level of protein structure is characterized by the overall folding and three dimensional shape. And the answer is going to be tertiary structure. This is because as mentioned before, interactions between amino acid side chains are going to be different because each side chain has its own properties such as polarity, for example. And there you have it, this means that our answer is going to be option c in the multiple choice. So with that being said, thank you so very much for watching. And I hope you found this helpful.

Identify the level of protein structure associated with each of the following:
b. hydrogen bonding between backbone atoms

Verified video answer for a similar problem:

Key Concepts

Protein Structure Levels

Secondary Structure

Hydrogen Bonding

Identify the level of protein structure associated with each of the following:b. hydrogen bonding between backbone atoms

Verified video answer for a similar problem:

Key Concepts

Protein Structure Levels

Secondary Structure

Hydrogen Bonding

Identify the level of protein structure associated with each of the following:
b. hydrogen bonding between backbone atoms