09-reg proc.pdf

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    Regulaodaexpressogenicanosprocariotas

    Procariotas: Operes

    ligaoRNApol

    transcrio-traduo

    modificaesnutricionais

    enzimasindu>veis

    Eucariotas: Genesdispersos

    Desenvolvimentoembrionrio

    Diferenciaocelular

    Meioambiente

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    ProtenasqueregulamoacessodaRNApolimeraseaopromotor

    Genes

    Estruturais(enzimas)

    Reguladores

    Repressores

    AKvadores

    Efetores

    Indutores

    Co-repressores

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    RegulaKonofGeneExpression

    ConsKtuiKveGeneExpression(promoters) RegulaKngMetabolism(promotersandoperators) RegulaKngDevelopment(sigmaswitches)

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    ConsKtuiKveGeneExpression(promoters)

    promoter coding sequence

    RegulaKngMetabolism

    (promotersandoperators)

    promoter coding sequenceoperator

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    RegulatoryProteinsBindDNA

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    OperonArabinose

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    Operonarabinose

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    Operonarabinose

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    OperonTryptophan

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    TheTryptophanOperon:

    ControlofasyntheKcpathway

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    AenuatedmRNA

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    AenuaKonoftrp

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    HisKdineoperon

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    SOSDNAresponse

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    ConsensusLexAbindingsite

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