Submitted only because apparently there is aprotein with the name "ubiquitin", whose role it is to attach it to other proteins to garbage collect them. So when

Submitted only because apparently there is aprotein with the name "ubiquitin", whose role it is to attach it to other proteins to garbage collect them. So when ubiquitin is attached to you, you'll be quitting. Pun aside, it seems that this is the actual name of the protein.