Compare the control of gene regulation in eukaryotes and bacteria at the level o

Question

Compare the control of gene regulation in eukaryotes and bacteria at the level of initiation of transcription. Sort each characteristic into the appropriate bin. initiation requires interaction between cis-acting elements and the trans- acting factors activators and repressors bind to enhancers and silencers, respectively chromatin structure may need to be modulated by chromatin remodeling, histone modifications, or DNA modifications to make the promoter accessible activators and repressors can influence recognition of promoters large DNA loops are induced bringing promoters and enhancers or silencers) close to each other repressor proteins induce DNA conformational changes in the form of repression loops, which prevent RNA polymerase binding to promoters subunits regulate t promoters are recognized by the subunits of the RNA polymerase specificity RNAs can adopt secondary formation of DNA loops contributes to regulation of transcription initiation promoters located upstream of the structures that either allow or repress initiation, making transcription responsive to environmental or cellular conditions transcribed gene Bacteria Eukaryotes Both

Explanation / Answer

BACTERIA EUKARYOTES BOTH sigma subunit is required in bacterial transcription initiation. thus, sigma subunits regulate transcriptional specificity. chromatin structure need to be modulated by chromatin remodelling, histone modifications or DNA modifications to make the promoter accessible RNAs can adopt secondary structures that either allow or repress initiation, making transcription responsive to environmental or cellular conditions. promoters are recoginizedby the sigma subunits of the RNA polymerase formation of DNA loops contributes to regulation of transcription initiation. activators and repressors bind to enhncers and silencers, respectively. activators and repressors can influence recoginition of promoters. initiation requires interaction between cis-acting elements and trans-acting factors. large DNA loops are induced, brinding promoters and enhancers or silencers close to each other repressor proteins induce DNA conformational changes in the form of repression loops

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