to change DNA into RNA
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Transcription is the process by which genetic information stored in DNA is copied into RNA molecules. This RNA can then serve as a template for protein synthesis during translation. Transcription is a critical step in gene expression and allows for the transfer of genetic information from the DNA to the cellular machinery that produces proteins.
Transcription factor A binds to specific DNA sequences called promoter regions to initiate the transcription of a gene. It helps RNA polymerase recognize the promoter and start transcribing the gene into mRNA. Transcription factor A plays a crucial role in regulating gene expression by controlling when and how much mRNA is produced.
To ensure that a gene is used at the right time and that proteins are made in the right amounts.
After transcription is complete, the mRNA transcript moves out of the nucleus into the cytoplasm, where it can be translated into protein. If the mRNA codes for the LUC gene, the protein product (luciferase) can then perform its function within the cell.
Transcription needs to be controlled to regulate gene expression in response to cellular signals and environmental conditions. This control allows the cell to produce the right proteins at the right time in the right amount, ensuring proper cell function and maintaining homeostasis. Overactive or underactive transcription can lead to diseases and developmental abnormalities.
The 5' cap attached to the mRNA ensures the mRNA's stability while it undergoes translation.