protein synthesis 2

protein synthesis 2
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  • A tRNA brings over an amino acid with an anti-codon sequence. complementary base pairing will occur between the codons on the mRNA and the anti-codons from the tRNA. The anti-codons and codons are joined by a hydrogen bond!
  • Ribosome
  • The large ribosomal subunit joins amino acids to form polypeptide chains by the small ribosomal subunit reading the RNA
  • Ribosome
  • The second step of translation is elongation. The tRNA molecules join to 'A site' through peptide bonds. They move over to the 'P site' and then a new tRNA will move into the old 'A site'. The tRNA in the 'P site' will move over to the 'E site' leaving behind the amino acid with the tRNA that was in the 'A site'. This process repeats and the tRNA in the 'E site' gets kicked out and the amino acid chain gets longer eventually forming a protein.
  • I love swimming!
  • The final step of translation is termination. Termination happens when a stop codon in the mRNA enters the 'A site'. Release factors is where stop codons are recognized.
  • Ribosome
  • Just like when I stop before I cross the road!
  • STOP
  • Then they're free! 
  • Ribosome
  • Release factors intrude the enzyme that forms peptide bonds. The string of amino acids become a polypeptide chain and the ribosome releases the polypeptide
  • We're free!!
  • That's awesome!
  • The polypeptide folds into a 3-dimensional shape that is unique to the structure and function of each protein and might join with other polypeptides to make a multi-part protein!
  • And that is how protein synthesis works!
  • My brain is on fire! I should have asked for a short version! But now I am going to eat meat and lots of eggs!
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