si_0726 RNA_3'-terminal_phosphate_cyclase RNA 3'-terminal phosphate cyclase (EC 6.5.1.4) si_0726 RNA_3'-terminal_phosphate_cyclase Protein RtcB si_0726 RNA_3'-terminal_phosphate_cyclase Protein with similarity to RtcB si_0726 RNA_3'-terminal_phosphate_cyclase Transcriptional regulatory protein RtcR