<P> Ribosomal ribonucleic acid ( rRNA ) is the RNA component of the ribosome , and is essential for protein synthesis in all living organisms . It constitutes the predominant material within the ribosome , which is approximately 60 % rRNA and 40 % protein by weight , or 3 / 5 of ribosome mass . Ribosomes contain two major rRNAs and 50 or more proteins . The ribosomal RNAs form two subunits , the large subunit ( LSU ) and small subunit ( SSU ) . The LSU rRNA acts as a ribozyme , catalyzing peptide bond formation . rRNA sequences are widely used for working out evolutionary relationships among organisms , since they are of ancient origin and are found in all known forms of life . </P>
<P> Ribosomal ribonucleic acid ( rRNA ) is the RNA component of the ribosome , and is essential for protein synthesis in all living organisms . It constitutes the predominant material within the ribosome , which is approximately 60 % rRNA and 40 % protein by weight , or 3 / 5 of ribosome mass . Ribosomes contain two major rRNAs and 50 or more proteins . The ribosomal RNAs form two subunits , the large subunit ( LSU ) and small subunit ( SSU ) . The LSU rRNA acts as a ribozyme , catalyzing peptide bond formation . rRNA sequences are widely used for working out evolutionary relationships among organisms , since they are of ancient origin and are found in all known forms of life . </P>
where is ribosomal rna found in the cell
where is ribosomal rna found in the cell
the ribosome
the ribosome