What group is different between types of amino acids?


Quick Answer

All 20 types of amino acids contain the same basic structure and differ only in their R-group. Amino acids are encoded by RNA and are the basic building blocks of proteins.

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Full Answer

The skeletal structure of an amino acid is always the same and contains an alpha carbon attached to an amino-group and a carboxyl-group. The R-group, referred to as the side chain, is attached to the alpha carbon and defines the amino acid. Amino acids can be divided into three groups: non-polar, polar uncharged and polar charged. The polar charged group can be further divided into acidic positively charged or basic negatively charged.

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