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Microbial Genetics

8. Microbial Genetics. Overview of Gene Expression. Translation. mRNA is translated in codons (three nucleotides) Translation of mRNA begins at the start codon : AUG Translation ends at a stop codon : UAA, UAG, UGA. PLAY. Animation: Translation. Figure 8.2. Translation. Figure 8.8.

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Microbial Genetics

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  1. 8 Microbial Genetics

  2. Overview of Gene Expression

  3. Translation • mRNA is translated in codons (three nucleotides) • Translation of mRNA begins at the start codon: AUG • Translation ends at a stop codon: UAA, UAG, UGA PLAY Animation: Translation Figure 8.2

  4. Translation Figure 8.8

  5. Translation in Prokaryotes Figure 8.10

  6. Translation Figure 8.9, step 1

  7. Translation Figure 8.9, step 2

  8. Translation Figure 8.9, step 3

  9. Translation Figure 8.9, step 4

  10. Translation Figure 8.9, step 5

  11. Translation Figure 8.9, step 6

  12. Translation Figure 8.9, step 7

  13. Translation Figure 8.9, step 8

  14. Regulation of Bacterial Gene Expression • Constitutive enzymes are expressed at a fixed rate. • Other enzymes are expressed only as needed. • Repressible enzymes • Inducible enzymes

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