Many times (at least several times a week) I would feel a lot of air in my stomach - mostly after eating or drinking soda or whatever. It was okay for a while, but I didn't think it was normal for me to produce that much gas in my stomach and for me to be unable to burp.
In molecular genetics, a repressor is a DNA-or RNA-binding protein that inhibits the expression of one or more genes by binding to the operator or associated silencers.
In the presence of the inducer allolactose, the repressor changes conformation and falls off the operator. RNAP is then able to bind to the promoter and begin transcription of the lacZYA gene. met operon. An example of a repressor protein is the methionine repressor MetJ. MetJ interacts with DNA bases via a pair of Î±-helices.