Transcriptional activator proteins function in the regulation of eukaryotic gene expression by:
A) Mediating the binding of the sigma subunit to RNA polymerase.
B) Altering the conformation of RNA polymerase.
C) Binding to specific target sites in chromosomal DNA upstream, within, or downstream of the gene being regulated.
D) Engaging in protein_protein interactions with core components of the transcription initiation complex.
E) Both C and D

Question

Quizplus · Accepted Answer

Transcriptional activator proteins bind to specific target sites in chromosomal DNA upstream, within, or downstream of the gene being regulated. This binding allows them to engage in protein-protein interactions with core components of the transcription initiation complex, thereby activating transcription of the target gene.

Transcriptional Activator Proteins Function in the Regulation of Eukaryotic Gene