Large Subunit rRNAs: The large subunit in prokaryotes contains the 23S and 5S rRNAs, while in eukaryotes ... reflecting its essential role in protein synthesis. The core structure and catalytic ...

What have we learned about RNA structure and function ... Prokaryotic organisms contain one type of rRNA gene that encodes three distinct RNA species: the 23S, 5S, and 16S rRNAs.