Shelby Bradford in The Scientist: While scientists have studied the molecular steps involved in gene expression for decades, many questions still remain about this fundamental process. To transcribe genes, RNA polymerase II (RNA Pol II) binds to DNA and catalyzes the addition of nucleotides to a growing mRNA chain. The precise molecular details of how RNA Pol II adds nucleotides to mRNA, though, remain unclear. To find out, a collaborative team …
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