the body cannot make them .
there are twenty two amino acid in body out of which eight are essential because they are not synthesise in body and they make other amino acid by metabolism.
amino acids
amino acid sequence
A codon of nucleotides codes for an amino acid. The combination of nucleotides in a codon determines the amino acid the codon makes.
Their side group makes them unique, they also contain nitrogen which makes them different from carbs and fats.
Glutamic acid has a carboxylic acid (COO-) group on the gamma carbon of the amino acid. The carboxylic acid group carries a negative charge and is considered acidic. Lysine has a amino group (NH3+) on the zeta carbon of the amino acid. The positively charged group on the terminal carbon atom makes it an basic amino acid.
phenylalanine
amino acids
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the side group
The remainder group or R Group. An amino acid is constituted by the amine group, the carboxylic acid group, and the side chain (AKA Remainder group). It's the chemistry of the side chain that makes an amino acid unique from the other amino acids.
proline is not an amino acid it is an imino acid