Question

What elements make up proteins?

Answer 1

Proteins:

• Proteins are the most abundant biomolecules of the living system.
• The sources of proteins are milk, cheese, pulses, peanuts, as well as fish.
• Proteins are the polymers of $\mathrm{\alpha }-$amino acids and they are connected to each other by a peptide bond or peptide linkage.
• The elements that make up proteins are carbon $\left(\mathrm{C}\right)$, hydrogen $\left(\mathrm{H}\right)$, oxygen $\left(\mathrm{O}\right)$ as well as nitrogen $\left(\mathrm{N}\right)$.
• Amino acids contain Amino $(–{\mathrm{NH}}_2)$ and carboxyl $(–\mathrm{COOH})$ functional groups.

The structure of Glycylalanine $\left(\mathrm{Gly}-\mathrm{Ala}\right)$ showing peptide linkage is given below: