Selenium and iodine are essential trace elements with connected but nonduplicate roles. Iodine is incorporated into thyroxine and triiodothyronine structures. Selenium is incorporated as selenocysteine in...

Zinc-finger proteins and selenium-containing selenoproteins illustrate two different ways trace minerals support protein function. Zinc is coordinated by cysteine and histidine residues to stabilize compact DNA-binding...

Selenium and zinc are both essential trace minerals, but proteins use them in different ways. Selenium can be inserted into proteins as the amino acid selenocysteine,...

Selenium's value comes from its incorporation into selenocysteine, an amino acid placed at the active sites of specialized proteins. Human biology uses 25 selenoproteins, including deiodinases,...