Biology protein synthesis

Biology protein synthesis

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  • You have protein deficiency
  • What does that even mean?
  • What is a protein?
  • Well, Marcus, proteins are made of amino acids joined together by peptide bonds. They are essential for life, about 20% of your body is made up of them!
  • How are proteins made?
  • DNA
  • mRNA
  • First is transcription initiation. DNA is in the nucleus and the DNA helicase opens up the gene by unzipping and breaking hydrogen bonds. RNA polymerase reads the coding strand of DNA and transcribes the message onto mRNA (messenger RNA).
  • The mRNA will leave the Nucleus through nuclear pores to a Ribosome in the Cytolasm. To begin the next stage of translation
  • Nucleus 
  • It's on the loose!
  • mRNA
  • Cytoplasm
  • Ribosome
  • The first step of translation is initiation. mRNA will travel through the cytoplasm and find a Ribosome to attach onto. The small Ribosomal subunit finds where to start on the mRNA by finding a special 3 letter begin sequence called a codon, which is methionine (AUG) 
  • mRNA
  • mRNA
  • Ribosome
  • mRNA
  • The ribosome then reads the mRNA and tells the tRNA (transfer RNA) what it needs
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