Lecture 31 Transcription slides

Lecture 31 Transcription slides - Transcription: RNA...

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Transcription: RNA Synthesis 6 th ed: 304-313 7 th Chap. 19, Fig. 19.8 Alternative RNA splicing +the relevant paragraph on the same page (Find equivalent figure in 6th ed.)
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RNA; similar to 1 strand of DNA except in a few ways. (generic nucleotide: could be in DNA or RNA) 1. Sugar is ribose
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2. RNA has the base uracil instead of thymine 3. RNA can base-pair but DOESN’T form a stable double-helix.
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Types of RNA 1. mRNA (messenger) 2. tRNA (transfer) 3. rRNA (ribosomal) Others: (often in RNA- protein complexes): ex. - telomerase - spliceosome - microRNA (discovered in 1998; this year’s Nobel Prize!)
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Ribonucleotide triphosphates (NTP’s) are inserted in a growing RNA strand, using a DNA template, following base-pairing rules. A in DNA pairs with U in RNA. (NTPs in RNA; dNTPs in DNA) Transcription: RNA synthesis.
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Each RNA molecule comes from transcription of ONE GENE. BUT: Not all genes are transcribed at once! Contrast DNA replication: In one round of S phase, ALL chromosomal DNA is replicated
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1 DNA strand in each gene is a template for
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This note was uploaded on 09/19/2009 for the course BIO 202 taught by Professor Dean during the Spring '08 term at SUNY Stony Brook.

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Lecture 31 Transcription slides - Transcription: RNA...

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