BIOLOGICAL SCIENCE~protein synthesis

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BIOLOGICAL SCIENCE~protein synthesis

  1. 1. PROTEIN SYNTHESIS<br />Celeste Roderno-Desingaño<br />
  2. 2. PROTEIN SYNTHESIS<br />Genetic information is found in the nucleus, though protein synthesis actually occurs in ribosomes found in the cytoplasm and on rough endoplasmic reticulum. <br />If protein is to be synthesized, then the genetic information in the nucleus must be transferred to these ribosomes. This is done by mRNA. <br />
  3. 3. Stages of protein synthesis<br />
  4. 4. Transcription process<br />If the DNA has uncoiled, it will allow the mRNA to move in and transcribe (copy) the genetic information.<br />Once the mRNA has the codon, it moves out of the nucleus and away from the DNA towards the ribosomes.<br />
  5. 5. Translation process<br />This is the process of transfer of the information in the RNA into a protein, <br />The mRNA with the codon that migrates into the cytoplasm will form complementary base pairs with the tRNAanticodon. <br />
  6. 6. Translation process<br />The rRNA comes in, proceeds to the elongation phase of protein synthesis, reads the nucleotide code as translated into polypeptidic sequence, with the proper amino acid. <br />At the end, a release factor binds to stop codon, termination translation and releasing the complete polypeptide from the ribosome. <br />
  7. 7. Example: <br />Parent strand<br />TAC CCG GCC TTA ATT<br />anticodon<br />AUG GGC CGG AAU UAA<br />Amino Acid Formed<br />Met GlyArgAsn stop<br />GENETIC CODE CHART<br />

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