<P> (remembered by the useful mnemonic "PITTT" or "FITTT", and includes all the aromatic amino acids) </P> <Ul> <Li> Phenylalanine (abbreviated Phe or F, in contrast to Proline which is Pro or P, based on their respective pronunciations) </Li> <Li> Isoleucine </Li> <Li> Threonine (some authors don't recognize it as a ketogenic amino acid) </Li> <Li> Tryptophan </Li> <Li> Tyrosine </Li> </Ul> <Li> Phenylalanine (abbreviated Phe or F, in contrast to Proline which is Pro or P, based on their respective pronunciations) </Li> <Li> Threonine (some authors don't recognize it as a ketogenic amino acid) </Li>

Which amino acid is ketogenic but not glucogenic