RT Journal Article SR Electronic T1 Selenoamino Acids: Decrease of Radiation Damage to Amino Acids and Proteins JF Science JO Science FD American Association for the Advancement of Science SP 369 OP 371 DO 10.1126/science.143.3604.369 VO 143 IS 3604 A1 Shimazu, F. A1 Tappel, A. L. YR 1964 UL http://science.sciencemag.org/content/143/3604/369.abstract AB Selenomethionine and selenocystine protect amino acid and protein systems from radiation damage. Selenoamino acids are more powerful protectors than the analogous sulfur amino acids and other known —SH protectors. Free-radical scavenger and repair mechanisms by which selenoamino acids react with induced free radicals may be the key reactions in the biological function of logical function of selenium.