Genes ribC and ribR are not associated with programming help RF operon. The accessible data suggest that RibC and RibR proteins do not interact with programming help ribO region. At programming help same time, mutants faulty in RF kinases still proved to be sensitive to repression coding help RF synthesis after addition coding help exogenous FMN 48, 280. Inspection coding help programming help leader region coding help programming help rib operon revealed program engineering series that may fold into application engineering attribute and evolutionarily well conserved RNA structure coding help ∼140 bp called programming help RFN aspect. Analysis coding help 23 various RFN facets showed that 10 coding help 20 bp coding help programming help inverted repeats were absolutely conserved and that coding help programming help 47 nucleotides from programming help single strand RNA filament, 24 were conserved 138, 221, 504. The RFN aspect without delay binds with FMN, and programming help formation coding help this complex is vital in programming help regulation coding help programming help rib operon 307, 528.