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9 Cards in this Set
- Front
- Back
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RNA polymerase |
Recognizes, binds promoters, melts DNA, initiates rna synthesis, regulated by transcription activators which is positive, regulated by lac repressor which is negative |
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Repressor protein |
Binds to the operator and blocks attachment of rna polymerase 2 to promoter |
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Lactose |
Small amount of lactose gets turn into allolactose ; it starts the cycle of lac operon |
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Structural genes |
Forms an operon; co- regulated by operon |
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Regulatory genes |
Keeps rna polymerase from transcribing structural genes |
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Promoter |
Area of DNA where rna polymerase can bind |
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Operator |
“on/off” switch controlling a cluster of functionally related scenes |
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Corepressor |
Inhibits expression of genes, turned into gene promoter, backs transcription |
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Inducer |
Molecule that regulates gene expression, binds to protein repressors or activators, disables repressors |
