Word: amino
(lookup in dictionary)
(lookup stats)
Dates: during 1930-1939
Sort By: most recent first
(reverse)
...most famous contributions is his detailed picture of the chemical structure of nucleic acids. Nuclei acids are constituents of cell nuclei and their chromosomes, tiny inheritance carriers which exist in the dividing cells of plants and animals. He is also world renowned for his work in vitamins, hormones, amino-acids...
Scientists have long sought a means of doubling the endurance of athletes, soldiers, tired business men without resorting to harmful stimulants. Key chemical which staves off muscular fatigue is glycine, one of the 14 amino acids necessary for life. But doctors cannot prescribe pure glycine for this purpose because it is nauseating...
...White found that his crystal was a heavy protein. In a way, this was unfortunate. In no case has the structural formula, or atomic architecture, of any protein molecule been mapped out by biochemists. It has been calculated that if a typical protein consists of 30 amino acids (protein structural units), 18 of which are different, the number of possible molecular arrangements is about 1,000,000,000,000,000,000,000,000,000. Young Dr. White made the point that the mystery of protein structure must be cleared up before scientists can understand how the hormones exert their obscure...
...biological label, heavy nitrogen promises Lo be even more important than heavy hydrogen, since nitrogen is the characteristic constituent of protein foods and their constituent amino acids. With Dr. Urey's heavy hydrogen, Biological Chemist Rudolph Schoenheimer...
Describing these experiments last week, Dr. Rose said that eight other amino acids have been found essential to life, seven others nonessential. Work on the value of the remaining protein components continues...