Transcription factor proteins bind to specific DNA sequences present in their target genes. These factors subsequently lead to increased transcription of target genes by which of the following processes?
A) blocking the effects of repressor molecules
B) bringing RNA nucleotides into contact with the DNA template
C) increasing the rate of initiation
D) increasing the speed of RNA polymerase transcription
E) preventing the pausing of RNA polymerase along the DNA template

Question

Quizplus · Accepted Answer

Transcription factors increase the rate of initiation by helping RNA polymerase bind to the promoter region of the gene, facilitating the start of transcription. Transcription factors are proteins that bind to specific DNA sequences, thereby controlling the activity of the gene whose regulatory sequences they bind. Transcription factors perform this function alone or with other proteins in a complex, by promoting or blocking the recruitment of RNA polymerase to specific genes. A defining feature of transcription factors is that they contain one or more DNA-binding domains (DBDs), which recognize and bind to specific sequences of DNA adjacent to the genes that they regulate.

Transcription Factor Proteins Bind to Specific DNA Sequences Present in Their