by Christoph Weigel | In prokaryotes, it only takes a small jazz band to get the music grooving: piano and a rhythm section suffice. The promoter region of a gene is a tiny stage on which RNA polymerase (p) and few transcription factors (dr, b) improvise on a tune, i.e. they initiate or skip transcription. By contrast, it takes a big band in eukaryotes to perform Duke Ellington's 'Caravan'. And since not all the musicians...
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