Period 5 element and because of its rarity, rhodium is usually alloyed with platinum or palladium and applied in high-temperature and corrosion-resistive coatings. White gold is often plated with a thin rhodium layer to improve its optical impression while sterling silver is often rhodium plated for tarnish resistance. Rhodium detectors are used in nuclear reactors to measure the neutron flux level. Palladium is a chemical element with the chemical symbol Pd and an atomic number of 46. It is a rare and lustrous silvery-white metal discovered in 1803 by William Hyde Wollaston. He named it after the asteroid Pallas, which was itself named
Sxy 5' UTR element sequence. Mutations that interfere with the stability of this secondary structure lead to increased translation of sxy followed by upregulation of the competence regulon. In the fellow gammaproteobacterium "Vibrio cholerae", a different RNA regulatory system is used. Here, a sRNA named 'tfoR' positively regulates expression of the sxy (tfoX) protein. The RNA element responds to chitin, which is an important regulator of competence in "V. cholera". Deletion of tfoR removed all competence for exogenous DNA in "V. cholera" "in vivo". Sxy 5' UTR element The Sxy 5' UTR element is an RNA element that controls expression of the sxy gene