Answer to Question #140098 in Biochemistry for Shubh

Question #140098
1. What kind of noncovalent interaction occurs between the following amino acids?
a.)Tyrosine and threonine
b.)Alanine and Alanine
1
Expert's answer
2020-10-23T10:49:05-0400

(a) A hydrogen bonding hydrogen is shared between two electronegative atoms, like nitrogen, sulfur, and oxygen, which have a nonbonding pair of electrons. Tyrosine contains a phenol functional group, whereas threonine has an alcohol functional group.

Tyrosine acts as a hydrogen bond acceptor, whereas threonine acts as a hydrogen bond donor.



(b) Alanine has a nonpolar hydrophobic chain present in its structure. The van der Waal interactions acting between the hydrophobic nonpolar groups of the alanine residues keep them closer to each other.



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