Lecture15-16-Ch8-Oct12-15-2007

Lecture15-16-Ch8-Oct12-15-2007 - Complex RNA secondary...

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-H in deoxyriboncleotides
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A G C T U DNA has AGCT RNA has AGCU
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Modified bases in tRNA: Modified bases in DNA
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Examples of phosphate groups at other positions than the 5’ carbon: = cAMP
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Nucleotides linked by phosphodiester bonds = DNA & RNA
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Alkaline hydrolysis of RNA
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The controls: The experiment: The Avery-MacLeod-McCarty experiment
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The Hershey-Chase blender experiment
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Tautomers of uracil
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Nucleotides strongly absorb UV light at ~260nm GMP AMP
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Hoogsteen (non-Watson-Crick) base pairings
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G tetraplex = 4 stranded DNA structure
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Unformatted text preview: Complex RNA secondary structure: Phe-tRNA Tetrahymena intron ribozyme hammerhead ribozyme The ribose can participate in H-bonding to stabilize the RNA structure Phe-tRNA 3D structure in more detail covalently attached to amino acid anticodon (base pairs to mRNA) A-T rich bubbles in DNA DNA hybridization Thymine dimers formed by UV irradiation recognize this food preservative? = deaminating agents Cofactors for enzymes 2nd messengers in the cell...
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This note was uploaded on 12/02/2009 for the course CH 53890 taught by Professor Raymonds during the Spring '09 term at University of Texas at Austin.

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Lecture15-16-Ch8-Oct12-15-2007 - Complex RNA secondary...

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