bal31 exonuclease deletion analysis and transposon tn5 mutagenesis of the 5 ' regulatory region of the rpsu-dnag-rpod macromolecular synthesis operon fused to the chloramphenicol acetyltransferase gene ( pglr301 ) demonstrated that sequences 5 ' to the operon promoters were not involved in operon transcriptional regulation and that the three tandem promoters p1 , p2 , and p3 were functionally independent .
C0034987
regulatory region
C1158770
transcriptional