Amino acids have the amino group, carboxyl group and an R group which is the side chain. All of them are bonded to the central carbon.
What is the structure of amino acids?
Amino acids are the building blocks of proteins. There are various kinds of amino acids but all of them have the same fundamental structure. They have a central carbon atom also called the alpha (α) carbon to which 3 groups are attached. First is the amino group, second is the carboxyl group and third is the R group. The R group is called the side chain of amino acids.
The difference among amino groups is based on the difference in structures of their side chains. The nature of the amino acid is determined by the composition of the side chain and its chemical nature.
The chemical properties determined by the side chains are polarity, acidity etc. Glycine is the simplest amino acid with only hydrogen as its R group.
They are called Amino acids because of the presence of an amino group. Therefore, the three groups in amino acids are the amino group, carboxyl group and R group
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