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Prokaryotic and Eukaryotic mRNAs

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Presentation on theme: "Prokaryotic and Eukaryotic mRNAs"— Presentation transcript:

1 Prokaryotic and Eukaryotic mRNAs
Figures_Hi-res\ch07\cell3e07070.jpg

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4 Overview of Translation
Figures_Hi-res\ch07\cell3e07090.jpg

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6 Signals for Translation Initiation
Start codon Figures_Hi-res\ch07\cell3e07080.jpg

7 Initiation of Translation
Initiation is controlled differently in prokaryotic and eukaryotic ribosomes In prokaryotes a single transcript can give rise to multiple proteins

8 Polysomes Figures_Hi-res\ch07\cell3e07150.jpg

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10 Ribosomal Frameshifting
Because translation uses a triplet code, there are three potential reading frames in each mRNA

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13 In addition to the APE sites there is an mRNA binding groove
that holds onto the message being translated Three tRNA binding sites: A site = amino-acyl tRNA binding site P site = peptidyl-tRNA binding site E site = exit site

14 Procariotas

15 Eucariotas

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18 Terminação

19 Action of Chaperones during Translation
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21 Action of Chaperones during Protein Transport
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22 Overview of Protein Sorting
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23 \Figures-Hi-res\ch09\cell3e09051.jpg


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