Hi ASL raVen, Dr. Richard Olree co-authored book "Minerals for the Genetic Code." Olree's three most essential mineral co-factors for the production of proteins from amino acids are selenium, iodine, and boron. I buy these three minerals in Olree's Grand Unified organic mineral complex from Hillman Health Foods, Inc. (noted below).
http://emineral.info/HHF/ Once shelled, brazil nuts slowly lose selenium. Soaking nuts probably accelerates this loss. I can't find brazil nuts in shells, so I buy shelled nuts from Trader Joe's and shred them. Tasty snack. Brazil nuts are 497 ppm selenium.