Gene Expression

Gene Expression - 1 Cap = positive control Most...

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Unformatted text preview: 1. Cap = positive control Most efficient=When glucose is low/lactose is high Most inefficient = high glucose/lactose because repressor is there No transcription of lac structural = low glucose/low lactose 2. Coordinated manner Eukaryotes can express genes without operons Regulating gene expression in both eukaryotic/prokaryotic = post translational control (changing activation of protein) Examples of post-translational control: phosphorylation, glycosilation (adding sugars), splicing (cleaving protein usually activates the protein), allosteric = interacting with another molecule 3. Chromatin remodeling 30 nm and more compact beyond that is essential for fitting genome into nucleus and parse chromosomes out in meiosis/ mitosis Also important for inactivating genes - preventing expression of genes by keeping them in chromatin that’s closed and inactive Makes this inactive because you need proteins that access promoters Accessibility vs activity = DNA susceptibility / protection 4.4....
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This note was uploaded on 11/20/2010 for the course BIOL 201 taught by Professor Kittleson during the Fall '08 term at UVA.

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Gene Expression - 1 Cap = positive control Most...

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