Its an universal sequence. Not the only one, but (AFAIK) the first one discovered. It forms part of the small ribosomal unit. Dates propably from the latter part of the RNA world. It's billions of years old. I have complementary sequence in my DNA, You've it as well, Alan Turing had it. Every plant has it. The Bacteria have it. It's in Archea. Every cellular life form that ever existed on earth had a complimetary sequence. It's just about as close to immortality as its possible to be in this entropic universe of ours. Immortal information. As boring person as this might make me; It is full of beauty.