This preview shows pages 1–3. Sign up to view the full content.
This preview has intentionally blurred sections. Sign up to view the full version.View Full Document
Unformatted text preview: sequence information into parts that can do something. In a typical bacterial cell there is @ 30 times more RNA than DNA. Two classes of RNA: Stable and unstable Stable: RNA in ribosomes: 3 different molecules 23S, 16S, 5S (rRNA) 90% of RNA in cell transfer RNA (tRNA) @60 5% of RNA Unstable messenger RNA (mRNA) 5% of RNA Thinking about RNA Stable: RNA in ribosomes: 3 different molecules 23S, 16S, 5S (rRNA) 23S @ 2100 b 16S @ 1500 b 5S @100 b Thousands of ribosomes/cell transfer RNA (tRNA) @60 types many copies of each The ribosome (contains proteins too) Base pairing in 16S ribosomal RNA (rRNA) About 1500 bases long with base-paired regions (stems), and unpaired loops and bulges. Double stranded regions would be helical. 5’ 3’ A tRNA on the same scale tRNA. Highly folded RNA about 100 nucleotides long Note the helical region...
View Full Document