Sec. 4 the dna connection

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Sec. 4 the dna connection

  1. 1. The DNA ConnectionTranslation of theGenetic Code -Protein SynthesisBy Mr. Hamdy Karim
  2. 2. A U G G G C U U A A A G C A G U G C A C G U UThe Genetic CodeThis is a molecule of messenger RNA.It was made in the nucleus bytranscription from a DNA molecule.mRNA moleculecodon
  3. 3. A U G G G C U U A A A G C A G U G C A C G U UHow Cells Make ProteinA ribosome on the rough endoplasmicreticulum attaches to the mRNAmolecule.ribosome
  4. 4. A U G G G C U U A A A G C A G U G C A C G U UIt brings an amino acid to the first threebases (codon) on the mRNA.Amino acidtRNA moleculeanticodonU A CA transfer RNA molecule arrives.The three unpaired bases (anticodon)on the tRNA link up with the codon.
  5. 5. A U G G G C U U A A A G C A G U G C A C G U UAnother tRNA molecule comes intoplace, bringing a second amino acid.U A CC C GIts anticodon links up with the secondcodon on the mRNA.
  6. 6. A U G G G C U U A A A G C A G U G C A C G U UA peptide bond forms between thetwo amino acids.Peptide bondC C GU A C
  7. 7. A U G G G C U U A A A G C A G U G C A C G U UThe first tRNA molecule releases its aminoacid and moves off into the cytoplasm.C C GU A C
  8. 8. A U G G G C U U A A A G C A G U G C A C G U UC C GThe ribosome moves along the mRNA tothe next codon.
  9. 9. A U G G G C U U A A A G C A G U G C A C G U UAnother tRNA molecule bringsthe next amino acid into place.C C GA A U
  10. 10. A U G G G C U U A A A G C A G U G C A C G U UA peptide bond joins the secondand third amino acids to form apolypeptide chain.C C G C C G
  11. 11. A U G G G C U U A A A G C A G U G C A C G U UThe polypeptide chain gets longer.G U CA C GThe process continues.This continues until a termination(stop) codon is reached.The polypeptide is then complete.MutationsIt has been Covered in the last class. Have a nice final Test.

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