The phrase "an operon on the expression of" is correct and usable in written English.
It can be used in a scientific context when discussing the regulation of gene expression by an operon.
Example: "The study focused on an operon on the expression of genes involved in antibiotic resistance."
Alternatives: "an operon affecting the expression of" or "an operon regulating the expression of".
As1_flv4 sets a threshold on the expression of the flv4-2 operon, thus preventing premature expression.
In conclusion, inhibition of Gyrase B by aminocoumarins has a distinct effect on the expression of different operons: the recF-gyrB-gyrA operon is upregulated, whereas the expression of arlRS and recA is inhibited.
Furthermore, while the placement of cel8A before cipA3 in the operon does not appear to decrease the expression of CipA3, it is apparent that positioning cel9B upstream of cel8A (or theoretically cipA3 at the end of the three gene operon) has a significant negative impact on the expression of Cel8A.
Using the artificial operon system, the expression of P450 BM3 reached 81 mg g−1 cell dry weight.
The A. tumefaciens T6SS activity also relies on the expression of an operon encoding vgrG2, which is functionally redundant with vgrG1 for Hcp secretion (Lin et al., 2013).
Nevertheless, PhoP/PhoQ has no regulatory effect on the expression of hmsHFRS, an operon responsible for synthesis and translocation of biofilm matrix exopolysaccharides through the cell envelope (Bobrov et al., 2008).
Previous researches on limonene biosynthesis focused merely on the expression of a certain polycistronic operon (e.g., gpps-ls) based on a specified vector [3],[4].
In our recent work, we have focused on the expression of the LEE1 operon of EHEC (enterohaemorrhagic E. coli) serotype O157 H7.
0A boxes were also identified upstream of the operons related to chemotaxis/motility, suggesting the possible negative regulation of Spo0A on the expression of chemotaxis/motility genes [ 37- 39].
PqsR is a LysR-type transcriptional regulator that binds to the promoter region of pqsABCDE operon and directly controls the expression of the operon (Cao et al., 2001; Gallagher et al., 2002).
