Term
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Definition
| enzymes whose level of transcription are altered based on the presence of specific signal molecules |
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Term
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Definition
| produced at some level all the time without regard to the chemical environment |
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Term
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Definition
| not transcribed in the presence of a specific molecule |
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Term
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Definition
| gene expression is “turned on” by the presence of an active regulator |
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Term
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Definition
| gene expression occurs until it is “turned off” by a repressor molecule |
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Term
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Definition
| a set of structural genes that have related function whose transcription is controlled as a unit |
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Term
| Three Structural Genes translated in lac operon |
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Definition
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Term
| Three proteins encoded in lac operon |
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Definition
| Beta galactosidase, Permease, Transacetylase |
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Term
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Definition
| Encodes for repressor protein |
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Term
| Repressor Protein in Lac Operon |
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Definition
| Binds to the Operator of the lac operon and prohibits transcription of the lac operon. |
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Term
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Definition
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Term
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Definition
| Mutations that make the operon never turn off. |
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Term
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Definition
| RNA Polymerase binding site. CAP binding site. |
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Term
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Definition
| Where positive control occurs. |
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Term
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Definition
| Co-Repressor in trp operon. |
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Term
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Definition
| specific regulatory sequence that, when transcribed into RNA, forms hairpin structures to stop transcription when certain conditions are not met |
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Term
| Termination Hairpin in Trp operon |
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Definition
| Formed in mRNA transcript in presence of high levels of tryptophan and prematurely stops transcription. Only part of the leader sequence is translated. |
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Term
| Antiterminator hairpin in trp operon |
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Definition
| Formed in mRNA transcript when tryptophan is rare or absent. Transcription of all loci will occur. |
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Term
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Definition
| Contains AUG and two trp codons (UGG) |
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