Role of second-largest RNA polymerase I subunit Zn-binding domain in enzyme assembly.


The second-largest subunits of eukaryal RNA polymerases are similar to the beta subunits of prokaryal RNA polymerases throughout much of their lengths. The second-largest subunits from eukaryal RNA polymerases contain a four-cysteine Zn-binding domain at their C termini. The domain is also present in archaeal homologs but is absent from prokaryal homologs… (More)


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