The YdaO/YuaA leader (now called the cyclic di-AMP riboswitch) is a conserved RNA structure found upstream of the ydaO and yuaA genes in Bacillus subtilis and related genes in other bacteria.
This conserved RNA structure, previously designated as the YdaO/YuaA leader, is now recognized as the cyclic di-AMP riboswitch, located upstream of ydaO and yuaA genes in Bacillus subtilis and analogous genes in other bacteria.