RRNA? WHat is it's function in Protein synthesis?

Ribosomal RNA (rRNA) along with ribosomal proteins make up ribosomes, the "workbenches" on which polypeptides (proteins) are synthesized. It turns out that it is actually rRNA, and not a protein, in the large subunit of the ribosome that performs the peptidyl transferase function of linking amino acids together. In eukaryotes, the genes coding for rRNAs are located in the nucleolus of the nucleus.