It has its own promoter (PI). A gene cluster, including promoter and any regulatory DNA sequences is called an operon, for example, the Lac operon. In this case, transcription from the operon is induced in response to a molecular signal-i.e. the presence of lactose, or allolactose.
Maxwell House Coffee's successful slogan, Good to the last drop was historically credited to the 26th President of the United States, Theodore Roosevelt. The folklore claims that during Roosevelt's visit in Nashville in 1907, he was served Maxwell House coffee. So impressed with the coffee, the president apparently said the famous words.
In 1915 Cheek-Neal began using a Good to the last drop slogan to advertise their Maxwell House Coffee. The advertisements claimed that former President Theodore Roosevelt had taken a sip of Maxwell House Coffee, and proclaimed it to be good to the last drop. Coca-Cola also used the slogan Good to the last drop. For several years, Cheek-Neal ads made no mention of Roosevelt as the phrase's originator. Maxwell House distanced itself from its original claim, admitting that the slogan was written by Clifford Spiller, former president of General Foods Corporation, and did not come from a Roosevelt remark overheard by Cheek-Neal.