- Describe the process of translation: initiation, elongation, and termination.
Translation is the process of the ribosome “Protein factory” creating proteins from mRNA and tRNA. Translation begins with Transcription, which is the transfer of DNA to mRNA, which is then used in the initiation step. In this step, the mRNA is transferred to the ribosome, and binds to the subunit. The two ribosome subunits bind together and create an amino acid. The next step is Elongation, or the creation of a protein chain. The ribosome holds the mRNA and allows the complementary tRNA to attach to binding sights. Then, 3 letter words called codons attach to their anti-codons. The tRNA then moves over with the protein to the ‘p’ cite and a new one moves to the ‘a’ cite, and the empty tRNA leaves the ribosome and a new tRNA is binded to codons in the ‘a’ cite. The final step is termination, where the elongation process receives a ‘stop’ codon which does not have a matching tRNA and there is no new amino acid. The ribosome then dissociates into 2 subunits and the protein polypeptide is released.
- How did todays model do a good job of modelling the process of translation? In what ways was out model inaccurate?
This model did a good job of showing the building of the protein polypeptide and the transfer of the amino acids to the “A” and “P” cites, as well as the ribosome reading the mrna. It was inaccurate in showing the differences of which codon was being read in which site, and which tRNA was pairing with the mRNA.
I enjoyed reading all your blogs! I thought that overall it was very informative, there was lots of good/solid information contained in all your posts and it was easy to follow along all throughout, the pictures were good too! The only thing I would say is to maybe expand your answer on the process of translation when explaining elongation!