E3 lecture2 - protein synthesis

E3 lecture2 - protein synthesis - Protein Synthesis I...

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Protein Synthesis I: Transcription Crick’s “Central Dogma” – DNA makes RNA makes Protein Evidence for a role for RNA in protein synthesis: - RNA is similar to DNA - RNA is found in cytosol; not nucleus - protein is made in cytosol - ribosomes are partially made from RNA DNA vs RNA - “deoxy…” vs. “oxy…” - DNA is double stranded; RNA is single stranded - DNA has thymine; RNA has uracil Three types of RNA - mRNA – “messenger RNA” carries code from DNA in nucleus to ribosome in cytosol - tRNA – “transfer RNA” transfers amino acids from cytosol to growing protein on ribosome - rRNA – “ribosomal RNA” is a structural molecule that (partially) makes up the ribosome Two parts to protein synthesis: - transcription: information from DNA is copied onto mRNA in nucleus - translation: manufacture of a protein occurs in the ribosome, from instructions carried on mRNA (occurs in cytoplasm). Summary of process:
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This note was uploaded on 02/08/2011 for the course BIO 101 taught by Professor Cantwell during the Fall '08 term at University of Tennessee.

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E3 lecture2 - protein synthesis - Protein Synthesis I...

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