The three roles<span> of RNA in protein synthesis. </span>Messenger RNA<span> (</span>mRNA) is translated into protein by the joint action of transfer RNA (tRNA<span>) and the ribosome, which is composed of numerous proteins and two major </span>ribosomal RNA<span> (</span>rRNA<span>) molecules. ... </span>Ribosomal RNA<span> (</span>rRNA<span>) associates with a set of proteins to form ribosomes.</span>
