What type of interaction would you expect between the side chains of each of the following pairs of amino acids in the tertiary structure of a protein?
a. lysine and glutamate

Question

What type of interaction would you expect between the side chains of each of the following pairs of amino acids in the tertiary structure of a protein?

a. lysine and glutamate

Accepted Answer

Alright, hello everyone. So this question is asking us what kind of interaction would occur between the side chains of seine and three option A says ionic bonding B says hydrogen bonding C says hydrophobic interaction and D says covalent bonding. So first and foremost, right, this question is describing an interaction between the side chains of two amino acids. In this case, sine and three anne. This if you recall is characteristic of tertiary structure because tertiary structure is characterized by the interactions between amino acid side chains. Now because amino acid side chains can be characterized in different ways depending on factors like their polarity. For example, multiple different types of of interactions are possible to create a tertiary structure, the three dimensional structure of a protein. So therefore, it's important to recognize the properties of both Cine and three well Cine and thine if you recall are both polar amino acids, this means that we can begin to eliminate a few different answer. Choices. First of all, C is going to be incorrect because neither of these amino acids are hydrophobic. So there's no hydrophobic interaction and we can also eliminate ionic bonding because sine and thine are not examples of acidic or basic amino acids that can have a charge in their side genes. So now the question is what is the most important part of the side chain? Why are the side chains of searing and three polar? Well, the reason why they're polar is because they both have hydroxy groups in their side shades, they both have O groups. And so this gives us a lot of information about what type of interaction is possible. So here when it comes to option D in the multiple choice covalent bonding, recall that covalent bonding in the context of a tertiary structure refers primarily to a disulfide bond or disulfide bridge. And a disulfide bond can only take place between two residues of cyst. So that's not going to be relevant for this question. But hydrogen bonding very much is recall that hydrogen bonding is an interaction between a hydro hydrogen atom oops connecting to an electron element. So the hydroxy group has hydrogen connecting to the electron oxygen and an electron atom from a separate group. And so if both sine and thine have hydroxy groups, then both are very much capable of hydrogen bonding, which means that B is going to be correct here and there you have it. So with that being said, thank you so very much for watching and I hope you found this helpful

What type of interaction would you expect between the side chains of each of the following pairs of amino acids in the tertiary structure of a protein?
a. lysine and glutamate

Verified video answer for a similar problem:

Key Concepts

Amino Acid Side Chains

Ionic Interactions

Tertiary Structure of Proteins

What type of interaction would you expect between the side chains of each of the following pairs of amino acids in the tertiary structure of a protein?a. lysine and glutamate

Verified video answer for a similar problem:

Key Concepts

Amino Acid Side Chains

Ionic Interactions

Tertiary Structure of Proteins

What type of interaction would you expect between the side chains of each of the following pairs of amino acids in the tertiary structure of a protein?
a. lysine and glutamate