Then the next one is codon number three and so forth. Now, in eukaryotic cells, such as human cells, we have the methionine tRNA complex. So the transfer RNA molecule attached to that activated methionine molecule essentially reads our mRNA molecule. And when it reaches the first aug that is closer to the five N, it attaches onto that and initiates the process of protein synthesis. Now, how exactly do we terminate this process of translation? Well, there are these proteins, these enzymes known as release factors.