two independent insertions of tn917-lac into the glta gene and one insertion into the trpe gene ( in the trpedcfba operon ) of b. subtilis were studied in detail , and the results confirmed that tn917-lac-mediated transcriptional fusions produce levels of beta-galactosidase that reflect accurately the regulated expression of interrupted genes .
C0040649
transcriptional
C0017262
expression