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Protein Synthesis


What Is Protein Synthesis?

The Process Of Protein Synthesis!

  1. The first step of protein synthesis is the copying of three Nucleotides bases to a gene. During this step the DNA helix must unwind and unzip onto a RNA copy of the DNA. This first process is called Transcription.
  2. The new RNA also known as the messenger RNA (mRNA) will now move out of the nuclear membrane into the Cytoplasm where the Ribosome's are located.
  3. The mRNA now attaches itself to a ribosome. Now a new process begins called Translation. Translation is the process of using coded mRNA instructions for a sequence of amino acids to produce a polypeptide.
  4. A new type of RNA called transfer RNA (tRNa) brings amino acids to the ribosome with the mRNA. The dissolved Amino Acids in the Cytoplasm are brought by the tRNA.
  5. From this point the tRNA fixes its amino acids to join the polypeptide chain. The tRNA and mRNA form a temporary bond at the ribosome.
  6. As you may or may not ribosomes can only handle two tRNA molecules at a time. The outgoing tRNA will set loose its amino acid and then detaches from the mRNA.
  7. The process of translation ends when the ribosome approaches the stop codon. The ribosome will reach the stop codon at the end of the mRNA. It will then release the polypeptide which will eventually go through the folding process, and then finally become a protein.