Protein Synthesis Part 2 pp

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Protein Synthesis.

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Protein Synthesis Part 2 pp. 207-210 Translation Protein Synthesis Part 2 pp. 207-210

Types of RNA mRNA (Messenger RNA) rRNA (Ribosomal RNA) Carries instructions to make a protein rRNA (Ribosomal RNA) Part of ribosome tRNA (Transfer RNA) Transfers amino acids to ribosomes

Proteins (macromolecule) Made of amino acids 20 amino acids Sequence of amino acids determines the protein Protein function is based on shape

Overview Translation: the reading of mRNA to make proteins DNA  mRNA  Proteins Ribosomes (in cytoplasm) read (translate) mRNA to assemble proteins

Genetic Code ACU GCG UAA ACC mRNA is used as a template to make proteins 3 mRNA nucleotides = 1 codon = 1 amino acid Codons tell when to stop and start (MET)

Practice! Find the Amino Acid: CUC: AAU: UCC: UAG:

Practice! Find the Amino Acid: CUC: Leu AAU: Asn UCC: Ser UAG: STOP!

- Peptide bond forms between amino acids, separating it from tRNA

Assembly A ribosome attaches to mRNA at start codon tRNA brings in amino acids floating in cytoplasm Tip of tRNA binds to a specific amino acid and carries ribosomes Anti-codon binds to mRNA