lecture 14 2008- DNAII - 2/13/08: Lecture Notes: DNA...

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2/13/08: Lecture Notes: DNA replication/ Protein Synthesis (Ch 10: 146-153, 160-161) Outline : Finish small pox life cycle Protein synthesis Transcription Translation OK, we know how DNA replicates… Now, how does small pox tell cells to make proteins? Steps of protein synthesis: 1) DNA is transcribed to mRNA 2) RNA is edited 3) mRNA attaches to ribosome 4) mRNA undergoes translation into amino acids - Chain of amino acids forms protein Protein synthesis (4 steps) Step 1: Transcription : DNA to mRNA Messenger RNA (mRNA) Carries protein-building instructions RNA structure Very similar to DNA structure 1) Phosphate group 2) Sugar 3) Nucleotide (base) Differences from DNA 1) Sugar is ribose not deoxyribose 2) Uracil (U) replaces Thymine (T) A binds to U 3) RNA is single-stranded Transcription is very similar to DNA replication Transcription STEPS: 1. Initiation – promoter tells RNA polymerase where to start 2. RNA elongation – RNA gets longer, starts to “peel” away from DNA template
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This note was uploaded on 04/07/2008 for the course BIOL 102 taught by Professor Storfer during the Spring '08 term at Washington State University .

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lecture 14 2008- DNAII - 2/13/08: Lecture Notes: DNA...

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