And these release factors, they essentially move along the mRNA molecule and they bind to these special stop codons. And remember when we discussed genetic code, we said there are three different stop codons. We have UAAG, UAG and UGA. These three codons essentially stimulate these release factors to bind onto that stop codon. And that essentially causes the dissociation of that ribosome complex. And that essentially concludes and terminates that synthesis of that particular polypeptide chain.