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Expression of the gene acs in Escherichia coli and the associated reporter gene pacs-gfp. acs and gfp mRNA are transcribed, and translated into the proteins Acs and GFP, respectively. Both mRNA and protein are degraded. Moreover, GFP is converted into a mature form in which it emits fluorescence when excited. Because acs and its reporter have the same promoter region, the transcriptional regulation of the two genes is identical. The variables are as defined in Equations (16) and (17)
