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Starting & Stopping Translation. Joohee Kim Sec. III IB Biology. Genetic Information. Genetic information flow can be divided into 3 stages 1. Replication : DNA is duplicated 2. Transcription : information from DNA is transferred to RNA

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starting stopping translation

Starting & Stopping Translation

Joohee Kim

Sec. III

IB Biology

genetic information
Genetic Information
  • Genetic information flow can be divided into 3 stages
  • 1. Replication: DNA is duplicated
  • 2. Transcription: information from DNA is transferred to RNA
  • 3. Translation: information in mRNA is used to build polypeptides
translation process of protein synthesis
Translation: Process of Protein Synthesis
  • 1.Initiation: 2 ribosomal subunits assemble with mRNA
  • 2.Elongation: amino acids are brought to ribosome and are added to growing polypeptide
  • 3.Termination: occur when ribosome reaches stop codon
how is reading frame chosen
How is Reading Frame Chosen?
  • Reading Frame: Non-overlapping set of three-nucleotide codons in RNA
  • Genetic code contains signals for starting and stopping translation.
  • Start Codon: AUG
  • Stop Codon: UAA, UAG, UGA
start codon stop codons
Start Codon & Stop Codons
  • Start Codon: AUG
  • => signal for starting translation
  • Stop Codon: UAA, UAG, UGA
  • => signal for stopping translation
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