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Molecules that initiate gene expression are primarily transcription factors, which are proteins that bind to specific DNA sequences near genes to promote or inhibit their transcription. Other key molecules include enhancers and promoters, which are DNA regions that interact with transcription factors to regulate the transcription process. Additionally, RNA polymerase is the enzyme that synthesizes RNA from the DNA template, playing a crucial role in initiating gene expression. Overall, the coordinated action of these molecules determines when and how genes are expressed in a cell.
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What is endogenous promoters?
Endogenous promoters are DNA sequences located upstream of a gene that initiate and regulate the transcription of that gene. These promoters are part of the gene's natural genomic sequence and play a crucial role in controlling gene expression in living organisms.
What can stop gene expression?
Gene expression can be stopped by transcription factors binding to the promoter region of a gene, thus preventing RNA polymerase from transcribing the gene. Additionally, epigenetic modifications like DNA methylation and histone deacetylation can inhibit gene expression by altering chromatin structure and making the gene inaccessible for transcription. Other factors such as microRNAs can also interfere with gene expression by degrading mRNA molecules or blocking their translation into proteins.
Molecules that interact with DNA to alter gene expression are?
Transcription factors are molecules that interact with DNA to regulate gene expression by binding to specific DNA sequences. These proteins can promote or repress the transcription of target genes by influencing the recruitment of the transcriptional machinery. Additionally, epigenetic modifications, such as DNA methylation and histone acetylation, can also alter gene expression by affecting the accessibility of the DNA to transcription factors and RNA polymerase.
How does gene expression initiate?
Proteins (in short supply) interact with specific receptors on the cells outer membrane, triggering a cascade of events, which leads to the expression of specific genes and the production of the protein.
What are internal receptors?
Internal receptors are proteins located inside a cell that can bind to specific signaling molecules, such as hormones or neurotransmitters, and initiate a cellular response. They transmit the signal from the outside of the cell to the inside, leading to changes in gene expression, metabolism, or cell function. Examples include nuclear receptors and enzyme-linked receptors.
What is the difference between a repressor and an activator in gene regulation?
In gene regulation, a repressor is a protein that blocks the expression of a gene, while an activator is a protein that enhances the expression of a gene. Repressors prevent the binding of RNA polymerase to the gene, while activators help RNA polymerase bind to the gene and initiate transcription.
What RNA molecules is involved in regulation of gene expression?
Mi RNA
What is the function of the 5' UTR promoter in gene expression regulation?
The 5' UTR promoter in gene expression regulation helps to initiate the process of transcription, which is the first step in making a protein from a gene. It signals the start of transcription and helps regulate the amount of protein that is produced from that gene.
What is endogenous promoters?
Endogenous promoters are DNA sequences located upstream of a gene that initiate and regulate the transcription of that gene. These promoters are part of the gene's natural genomic sequence and play a crucial role in controlling gene expression in living organisms.
How do eukaryotes cells regulate gene expression?
the molecules of the bolecules conjogulate with the dna polymers, which disattches with the conjolecules.
What is the difference between sigma factors and transcription factors in gene regulation?
Sigma factors are specific proteins in prokaryotes that help RNA polymerase bind to the promoter region of a gene to initiate transcription. Transcription factors, on the other hand, are proteins in eukaryotes that regulate gene expression by binding to specific DNA sequences and influencing the activity of RNA polymerase. In summary, sigma factors are specific to prokaryotes and help initiate transcription, while transcription factors are found in eukaryotes and regulate gene expression.
What types of DNA sequences help eukaryotic cells regulate gene expression?
Eukaryotic cells use various DNA sequences to regulate gene expression, including promoters, enhancers, and silencers. Promoters are located near the start of a gene and initiate transcription. Enhancers and silencers can be distant from the gene and help to enhance or repress gene expression, respectively. Together, these sequences play important roles in controlling when and how genes are expressed in eukaryotic cells.
What are the key differences between protein expression and gene expression?
Protein expression involves the process of producing proteins from the instructions encoded in genes. Gene expression, on the other hand, refers to the process of turning a gene's instructions into a functional product, which can be a protein or RNA molecule. The key difference lies in the fact that protein expression specifically focuses on the production of proteins, while gene expression encompasses the broader process of utilizing genetic information to create functional molecules.
What can stop gene expression?
Gene expression can be stopped by transcription factors binding to the promoter region of a gene, thus preventing RNA polymerase from transcribing the gene. Additionally, epigenetic modifications like DNA methylation and histone deacetylation can inhibit gene expression by altering chromatin structure and making the gene inaccessible for transcription. Other factors such as microRNAs can also interfere with gene expression by degrading mRNA molecules or blocking their translation into proteins.
Molecules that interact with DNA to alter gene expression are?
Transcription factors are molecules that interact with DNA to regulate gene expression by binding to specific DNA sequences. These proteins can promote or repress the transcription of target genes by influencing the recruitment of the transcriptional machinery. Additionally, epigenetic modifications, such as DNA methylation and histone acetylation, can also alter gene expression by affecting the accessibility of the DNA to transcription factors and RNA polymerase.
What is The expression of a gene is called?
The expression of a gene is called the phenotype.
What codes for protein in the process of gene expression?
In the process of gene expression, the gene codes for protein.
