Question

How do transcription factors and enhancers regulate gene expression in eukaryotic cells, and what role do epigenetic modifications such as DNA methylation and histone modification play in this process? 

10 Feb 2025
Answer :
Word Count : 545

Transcription factors and enhancers are crucial components in the regulation of gene expression in eukaryotic cells. They work together to ensure that genes are activated or repressed at the right time and in response to specific signals. Transcription factors are proteins that bind to specific DNA sequences near genes, known as promoters or enhancer regions. By interacting with the transcription machinery, they facilitate or inhibit the transcription of genetic information from DNA to RNA.

The process begins with transcription factors binding to their corresponding DNA sequences, often located in the promoter region of a gene. These factors can either promote or block the recruitment of RNA polymerase, the enzyme responsible for transcribing DNA into mRNA. Transcription factors work through their interactions with other proteins, such as co-activators or co-repressors, which can either enhance or suppress the _________ _____ ___ ___ _____ ___ _______ _________ ____.
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