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22 Cards in this Set
- Front
- Back
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Protein mediated regulation can either __ or __ gene expression
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Activate or Repress
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Eukaryotic packaging is accomplished through what protein?
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Chromatin
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What two things may be encoded by a gene?
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Protein
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What does UTR stand for?
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Utah's NPR station
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What binds the Promoter?
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RNA Polymerase
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What is a protein-coding region of a gene called?
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Transcribed Region
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What specific ELEMENT does RNA Pol bind to?
(Hint: Not Ca, Hg, Y, Sn, etc.) |
Core promoter element
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Bact. RNA Pol exists in what four forms?
(aka complexes) |
Closed
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What three molecules does the Ternary Complex include?
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DNA
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Regulation of protein synthesis can occur at any of which three concerted steps?
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Transcription
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The RNA Pol apoenzyme consists of how many pieces?
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Five:
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How does Ternary complex become Elongation complex?
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σ is released
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What does it regulate?"
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σ70
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What does σ32 regulate?
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"Heat shock" genes
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What is the purpose of the σ cycle?
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Allows Pol to switch σ's
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Besides housekeeping and heatshock, what else is commonly transcribed?
(Think about survival on the Serengheti) |
Movement!
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What three mechanisms regulate σ?
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Rates of synth., degrad.
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What 3 genes are on Lac Operon?
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Y, Z & A
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What lactose metabolite has a regulatory effect?
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Allolactose is an inducer
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Describe the structure of the inactive Lac Operon
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Loop, which acts as an RNA-Pol block
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The Lac Operon represents what type of regulation?
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Catabolite Repression
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Only way to get Lac Operon to work...
(Hint: Presence/absence of certain sugars and the states of operators...) |
Glu -, Lac +
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