Neorhizobium galegae bv. orientalis str. HAMBI 540 chromosome I, sul1 is cis-regulatory element that is thought to sense ions involved in sulfur or methionine metabolism; they are found in alphaproteobacteria.
Neorhizobium galegae bv. orientalis str. HAMBI 540
Neorhizobium galegae bv. orientalis str. HAMBI 540 plasmid pHAMBI540a, al1l pseudoknot.