Palladium Palladium Palladium is a chemical element with symbol Pd and atomic number 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 after the epithet of the Greek goddess Athena, acquired by her when she slew Pallas. Palladium, platinum, rhodium, ruthenium, iridium and osmium form a group of elements referred to as the platinum group metals (PGMs). These have similar chemical properties, but palladium has the lowest melting point and is the least dense of them. More than half the supply of palladium
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