a family of amino acids pentoses. chemical molecular formulas of amino acids histidine, phenylalanine, tyrosine

family amino acids pentoses chemical molecular formulas histidine phenylalanine tyrosine tryptophan vector illustration serine cysteine glycine pyruvate alanine valine leucine glutamate glutamine arginine proline aspartate asparagine threonine isoleucine methionine lysine medicine symbol organic glycin atom science isolated medical acid set glutamic formula structure chemistry molecule