Question

What are uncommon amino acids?

Answer 1

We know that amino Acids are the organic compounds which combine to form proteins; hence they are referred to as the building components of proteins. These biomolecules are involved in several biological and chemical functions in a human body and are the necessary ingredients for the growth and development of human beings.

Complete answer:
Amino acids contain the essential amino groups $\left( -N{{H}_{2}} \right)$ and carboxyl groups $\left( -COOH \right).$ Amino acids are present in the ingredients of protein. Both peptides and proteins are the long chains of amino acids. Altogether, there are twenty amino acids, which are involved in the construction of proteins.
Out of $20$ amino acids, our body can easily synthesize a few by their own and are called as non-essential amino acids. They include alanine, asparagine, arginine, amino acid, glutamic acid, cysteine, glutamine, proline, glycine, serine, and tyrosine. Apart from these, there are other nine amino acids which are very much essential as they cannot be synthesized by our body. They are called essential amino acids and they also include isoleucine, histidine, lysine, leucine, phenylalanine, tryptophan, methionine, threonine, and valine.
All amino acids have a radical Associate in nursing a radical secure to identical atoms (the $\alpha$carbon). But, they disagree from one another in their R cluster or the facet chain cluster. The character of the R-group differentiates every amino alkanoic acid in terms of their acid/basic nature, solubility, stability, and ultimately the proteins.

Note:
Amino acids play a vital role in performing several biological and chemical functions in several parts of our body, including building and repairing of the tissues, within the formation and function of enzymes, food digestion, for the transportation of molecules, etc.