Draw the structures for each of the following amino acids at physiological pH.

a. Glycine

b. T

c. Glutamate

d. Phe

The given amino acid is Glycine.

Glycine is an amino acid that has a single hydrogen atom as its side chain.

It is a stable amino acid with a chemical formula ${\mathrm{NH}}_2-{\mathrm{CH}}_2-\mathrm{COOH}$.

Its structure is given below:

The given amino acid is T.

"T" stands for Thymine amino acid.

It is one of the nucleobases in the nucleic acid of DNA and in RNA is replaced by Uracil which is "U".

The structure of "T" is given below:

The given amino acid is glutamate.

Glutamate helps in the biosynthesis of another amino acid. It plays a major role in the central nervous system that helps in learning and memory.

The structure of glutamate is given below:

The given amino acid is "Phe".

In amino acids, "Phe" stands for Phenylalanine

It is an essential α-amino acid with the formula ${\mathrm{C}}_9{\mathrm{H}}_{11}{\mathrm{NO}}_2$.

The structure of "Phe" is given as follows: