Draw the structural formula of tripeptide Ala-Ser-Pro. Label the peptide linkages, $\mathrm{N}$-terminals, and $\mathrm{C}$-terminals. How many water molecules are released when one molecule of a tripeptide is formed?

Individual $2$-amino acids have different structures depending on the $\mathrm{pH}$ of the solution they are dissolved in.The molecular formula of serine is given below:

Deduce the structure of serine in a solution with a $\mathrm{pH}$ of $2$.

Individual $2$-amino acids have different structures depending on the $\mathrm{pH}$ of the solution they are dissolved in. The molecular formula of serine is given below:

Deduce the structure of serine in a solution with a $\mathrm{pH}$ of $12$.

Individual $2$-amino acids have different structures depending on the $\mathrm{pH}$ of the solution they are dissolved in.The molecular formula of serine is given below:

Deduce the structure of serine at the isoelectric point.