It is transcribed by RNA polymerase I as part of the 45S precursor that also contains 18S and 28S rRNA.
RNA | 16S ribosomal RNA | RNA polymerase | RNA polymerase II | RNA-dependent RNA polymerase | RNA virus | RNA interference | RNA-binding protein | non-coding RNA | Transfer RNA | RNA-Seq | RNA polymerase III | RNA polymerase I | messenger RNA | U2 spliceosomal RNA | small nuclear RNA | RNA splicing | 18S ribosomal RNA | Z12 small nucleolar RNA | transfer RNA | Small nucleolar RNA R43 | RNA Tie Club | Ribosomal protein s6 | Ribosomal DNA | ribosomal DNA | Polynucleobacter-1 RNA motif | NoRC associated RNA | Non-coding RNA | Messenger RNA | List of RNA structure prediction software |