Sigma factor Memes

The sigma male of molecular biology doesn't waste time. Binds, initiates, leaves—no small talk, no follow-up, pure efficiency. Just like your lab's postdoc who starts experiments at 5 AM and disappears before anyone can ask for help. Sigma factors are transcription initiators that literally do the molecular equivalent of a one-night stand with RNA polymerase. They're essential for gene expression but have zero commitment issues. Truly the biochemical equivalent of "I don't have time for this relationship."