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  1. NLM Digital Collections - An Enzymatic Spectrophotometric Method for the Determination of Phenylalanine in Blood 
    Publication: C.V. Mosby Company, March 1960
    resource.nlm.nih.gov/101584910X143
    An Enzymatic Spectrophotometric Method for the Determination of Phenylalanine in Blood ... Phenylalanine ... simple enzymatic method for the quantitative detection of phenylalanine in blood by using snake venom. Useful as ...
  2. Synthetic RNA and the Poly-U Experiments, 1959-1962 | Marshall W. Nirenberg - Profiles in Science 
    https://profiles.nlm.nih.gov/spotlight/jj/feature/syntheticrna
    ... They found that their synthetic RNA specified that phenylalanine, an amino acid, be added to the end ... traces of uracil had directed the synthesis of phenylalanine. On the RNA strand, synthetic RNA made of ...
  3. Glossary | Victor A. McKusick - Profiles in Science 
    https://profiles.nlm.nih.gov/spotlight/jq/feature/glossary
    ... a mutation in a gene coding for a phenylalanine processing enzyme--phenylalanine hydroxylase--which leads to accumulation of phenylalanine and mental retardation if not treated. Pleiotropism -- Multiple ...
  4. Glossary | Linus Pauling - Profiles in Science 
    https://profiles.nlm.nih.gov/spotlight/mm/feature/glossary
    ... a mutation in a gene coding for a phenylalanine processing enzyme--phenylalanine hydroxylase--which leads to accumulation of phenylalanine and mental retardation if not treated. Polypeptide -- A ...
  5. Deciphering the Genetic Code, 1958-1966 | Francis Crick - Profiles in Science 
    https://profiles.nlm.nih.gov/spotlight/sc/feature/deciphering
    ... a polypeptide chain with only one amino acid, phenylalanine. Crick immediately recognized the importance of Nirenberg's finding that UUU coded for phenylalanine when it was first reported at the 1961 ...
  6. Glossary | Marshall W. Nirenberg - Profiles in Science 
    https://profiles.nlm.nih.gov/spotlight/jj/feature/glossary
    ... mitochondrion or chloroplast, which performs a particular function. Phenylalanine -- A nonpolar amino acid. Phosphorylase -- An enzyme that ...
  7. The Molecular Basis of Disease | Linus Pauling - Profiles in Science 
    https://profiles.nlm.nih.gov/spotlight/mm/feature/disease
    ... the body's inability to metabolize an amino acid, phenylalanine, leading to a buildup of that substance and ... defect in an enzyme needed to break down phenylalanine. PKU, in other words, might be another molecular ...
  8. Nucleic Acids, the Genetic Code, and Transposable Genetic Elements: A Life in Research | Maxine Singer - Profiles in ... 
    https://profiles.nlm.nih.gov/spotlight/dj/feature/nucleic
    ... synthesis of a polypeptide chain composed entirely of phenylalanine, one of the twenty common amino acids that ... Nirenberg's finding that triplets of uracil coded for phenylalanine represented the first step in cracking the genetic ...
  9. Glossary | Maxine Singer - Profiles in Science 
    https://profiles.nlm.nih.gov/spotlight/dj/feature/glossary
    ... is a sheet of special-grade filter paper. Phenylalanine -- A nonpolar amino acid. Phosphorylase -- An enzyme that ...
  10. NLM Digital Collections - Smoking and Health: A Report of the Surgeon General 
    Publication: United States. Office on Smoking and Health, 1979
    resource.nlm.nih.gov/101584932X630
    ... has greater stimulatory activity in an E. coli phenylalanine- incorporating system; and (4) the administration of MC ... 176, February 1977. KAUFMAN, S. The enzymatic conversion of phenylalanine to tyrosine. Journal of Biological Chemistry 226: 511- ...
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