Protein Synthesis


Protein Synthesis


  • RNA helicase binds to the start of the gene to be transcribed
  • RNA helicase moves along breaking hydrogen bonds to expose the bases on the coding strand
  • RNA nucleotides bind to exposed bases by specific complementry base pairing (scbp), uracil replaces thymine
  • RNA polymerase joins the mRNA s-p backbone together by forming phosphodiester bonds
  • STOP codon reached, RNA polymerase detatches and DNA forms hydrogen bonds again

Functional mRNA:

  • In eukaryotes, introns and exons are both copied into mRNA
  • This is called pre-mRNA
  • Splicing the takes place, to remove introns and join exons together


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