Words similar to operon

Example sentences for: operon

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However, only one rRNA operon is present in each subspecies and this is also true for the fast growers Mycobacterium abscessus and Mycobacterium chelonae [ 32 ] . These fast growing mycobacteria have multiple promoters that increase the transcriptional rate of the rRNA operon to overcome gene dosage limitations [ 32 ] . The rRNA operon promoter structures have not been mapped by primer extension for either M. paratuberculosis or M. avium , but if M. avium had multiple functional rRNA operon promoters, that may account for the growth rate differences.
Operon displacement
In Geobacter sulfurreducens, both trpEa and trpEb_1 (presumably partnered based on the results shown in Figure 4) are unlinked to one another, and both are outside an otherwise intact trp operon.
Use of these compounds in E. coli occurs by a broad substrate enzyme encoded by the dmsABC operon located at 20 minutes on the chromosome [ 1 2 3 ] . The 100-fold activation of dmsABC gene expression in response to anaerobiosis is controlled by the Fnr regulatory protein [ 4 ] . Following a re-examination, the dmsABC P1 transcription start site was located 223 nucleotides upstream of the translational start of dmsA [ 5 6 ] . This centers the Fnr binding site (TTGATnnnnAACAA) at -41.
Starvation for host-derived L-tryptophan, which is initiated by induction of indoleamine dioxygenase by IFN-γ, undoubtedly triggers derepression of the entire tryptophan operon, including the genes encoding PRPP synthase and kynureninase.