Multiple Choice
Enhancers can reside downstream of the gene they regulate.
7. Gene Expression
Transcriptional Regulators
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What is the purpose of a transcriptional mediator?
A
To mediate regulation between transcription and translation
B
To mediate the process of transcription
C
To mediate between regulatory proteins and RNA polymerase
D
To mediate between RNA polymerase and DNA
Verified step by step guidance1
Understand the role of transcriptional mediators in gene expression. They are multiprotein complexes that facilitate the interaction between transcription factors and RNA polymerase II.
Recognize that transcriptional mediators do not directly mediate the process of transcription itself, but rather assist in the regulation of transcription by acting as a bridge.
Identify that transcriptional mediators help in the recruitment of RNA polymerase II to the promoter region of a gene, which is essential for the initiation of transcription.
Clarify that transcriptional mediators interact with regulatory proteins, such as activators and repressors, to modulate the transcription of specific genes.
Conclude that the primary purpose of a transcriptional mediator is to mediate between regulatory proteins and RNA polymerase, facilitating the transcription of DNA into RNA.
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