Biology
Control elements are non-coding DNA regions that regular transcription by RNA polymerase II. They come in two forms: enhancers and silencers.
Enhancers are a short region of DNA that can bind to proteins called activators. When such binding happens, transcription of a gene will be initiated. The gene can be some distance away from the enhancer, or even on a different chromosome. The increase in transcription is due to activators recruiting transcription factors, which enhances the binding of RNA polymerase.
A silencer is a DNA sequence capable of binding transcription regulation factors termed repressors. Upon binding, RNA polymerase is prevented from initiating transcription thus decreasing or fully suppressing RNA synthesis.
- Q: Explain How Protein Synthesis Can Be Controlled At A Transcriptional Level In Prokaryotes
In prokaryotes, genes that encode enzymes of a metabolic pathway are usually clustered together on the chromosome in a region called an operon. A typical operon consists of regulatory sequences, like promoter, operator, terminator, and structural genes....
- Q: Compare And Contrast Dna Replication And Transcription
Similarities: Both processes occur in the nucleus. Both processes also involve specific complementary base pairing. Both processes involving the unwinding of the double helix DNA. Both processes involve forming of hydrogen bonds between the original DNA...
- Q: Compare And Contrast Transcription And Translation
Transcription occurs in the nucleus but translation occurs in the cytoplasm and rough endoplasmic reticulum. The two processes use different components and enzymes, transcription uses transcription factors and RNA polymerase whereas translation uses ribosomes...
- Transcription
Each gene contains a specific nucleotide sequence called the promoter region and it contains the initiation site, where proteins, called transcription factors, and RNA polymerase enzyme recognize and bind to. The enzyme-DNA-protein complex then causes...
- Transcription In Eukaryotic Cells
Transcription in Eukaryotic Cells What is transcription? Transcription is the process that creates RNA inside a cell. It is used to develop proteins inside the cytoplasm of a cell although the actual transcription happens in the nucleus and mitochondria....
Biology
Control Elements
Control elements are non-coding DNA regions that regular transcription by RNA polymerase II. They come in two forms: enhancers and silencers.
Enhancers are a short region of DNA that can bind to proteins called activators. When such binding happens, transcription of a gene will be initiated. The gene can be some distance away from the enhancer, or even on a different chromosome. The increase in transcription is due to activators recruiting transcription factors, which enhances the binding of RNA polymerase.
A silencer is a DNA sequence capable of binding transcription regulation factors termed repressors. Upon binding, RNA polymerase is prevented from initiating transcription thus decreasing or fully suppressing RNA synthesis.
- Q: Explain How Protein Synthesis Can Be Controlled At A Transcriptional Level In Prokaryotes
In prokaryotes, genes that encode enzymes of a metabolic pathway are usually clustered together on the chromosome in a region called an operon. A typical operon consists of regulatory sequences, like promoter, operator, terminator, and structural genes....
- Q: Compare And Contrast Dna Replication And Transcription
Similarities: Both processes occur in the nucleus. Both processes also involve specific complementary base pairing. Both processes involving the unwinding of the double helix DNA. Both processes involve forming of hydrogen bonds between the original DNA...
- Q: Compare And Contrast Transcription And Translation
Transcription occurs in the nucleus but translation occurs in the cytoplasm and rough endoplasmic reticulum. The two processes use different components and enzymes, transcription uses transcription factors and RNA polymerase whereas translation uses ribosomes...
- Transcription
Each gene contains a specific nucleotide sequence called the promoter region and it contains the initiation site, where proteins, called transcription factors, and RNA polymerase enzyme recognize and bind to. The enzyme-DNA-protein complex then causes...
- Transcription In Eukaryotic Cells
Transcription in Eukaryotic Cells What is transcription? Transcription is the process that creates RNA inside a cell. It is used to develop proteins inside the cytoplasm of a cell although the actual transcription happens in the nucleus and mitochondria....