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The gene expression is regulated from transcriptional initiation, to RNA processing, and to the post-translational modification of a protein. The regulation of the genes helps to either decrease or increase the production of a specific gene products.
Wiki User
∙ 9y ago
Wiki User
∙ 13y agoRegulation of transcription controls when transcription occurs and how much RNA is created. Transcription of a gene by RNA polymerase can be regulated by at least five mechanisms:
Specificity factors - alter the specificity of RNA polymerase for a given promoter or set of promoters, making it more or less likely to bind to them.
Repressors - bind to non-coding sequences on the DNA strand that are close to or overlapping the promoter region, impeding RNA polymerase's progress along the strand, thus impeding the expression of the gene.
General transcription factors - position RNA polymerase at the start of a protein-coding sequence and then release the polymerase to transcribe the mRNA.
Activators - enhance the interaction between RNA polymerase and a particular promoter, encouraging the expression of the gene. Activators do this by increasing the attraction of RNA polymerase for the promoter, through interactions with subunits of the RNA polymerase or indirectly by changing the structure of the DNA.
Enhancers - sites on the DNA helix that are bound to by activators in order to loop the DNA bringing a specific promoter to the initiation complex.
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∙ 15y agothrough the control of transcription
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In both eukaryotes and prokaryotes gene experssion is primarliy regulated at the level of?
Gene expression can be controlled at any of several stages, which we divide broadly into transcription, processing and translation. Transcription often is controlled at the stage of initiation, or at termination but usually not controlled at elongation. In eukaryotic cells, processing of the RNA product may be regulated at the stages of modification, splicing, transport, or stability. Translation may be regulated, usually at the stages of initation and termination just like transcription. Gene expression can be controlled at any of several stages, as during transcription, processing and translation. Transcription often regulated at initiation and termination but elongation is usually not regulated. In eukaryotes cells, processing of the RNA product may be regulated at the stages of modification, splicing, transport, or at stability. Translation may be regulated at initiation and termination just like transcription.
The first step in the process of gene expression is transcription What is the product of transcription during gene expression?
the molecule of mRNA
What are modifier genes?
modifier gene is a gene that alters phenotypic expression of another gene
What can sometimes influence expression of genes?
Several factors determine the final outcome of gene expression. They include the cell's environment, the presence of other cells, and the timing of gene expression. hope this helped! -Steph
In the control of gene expression in bacteria a regulatory gene a has its own promoter?
No
Protein phosphorylating enzymes help regulated gene expression by?
protein activation
Which cat represents a coat pattern that is regulated by temperature?
The Siamese cat has temperature-sensitive pigment expression due to the albino gene. The coat pattern is a result of this gene because it is a defective form of tyrosinase that is regulated by the cat's body temperature.
What is The expression of a gene is called?
The expression of a gene is called the phenotype.
In both eukaryotes and prokaryotes gene experssion is primarliy regulated at the level of?
Gene expression can be controlled at any of several stages, which we divide broadly into transcription, processing and translation. Transcription often is controlled at the stage of initiation, or at termination but usually not controlled at elongation. In eukaryotic cells, processing of the RNA product may be regulated at the stages of modification, splicing, transport, or stability. Translation may be regulated, usually at the stages of initation and termination just like transcription. Gene expression can be controlled at any of several stages, as during transcription, processing and translation. Transcription often regulated at initiation and termination but elongation is usually not regulated. In eukaryotes cells, processing of the RNA product may be regulated at the stages of modification, splicing, transport, or at stability. Translation may be regulated at initiation and termination just like transcription.
Differential gene expression?
Differential gene expression refers to the gene expression that reacts to stimuli or triggers. It is a means of gene regulation where certain hormones produce an effect on protein biosynthesis.
When was Mouse gene expression database created?
Mouse gene expression database was created in 2010.
Through gene expression the messages encoded in the DNA contained in a cell direct the cells activity Which of the following sentences best defines gene expression?
Gene expression is the activation of a gene that results in the formation of a protein.
What is Hypothetical gene?
A gene that hidden or mask to another gene expression.
What is the gene expression?
Gene expression is the process by which inheritable information from a gene, such as the DNA sequence, is made into a functional gene product, such as protein or RNA.
What has the author Lorraine O'Driscoll written?
Lorraine O'Driscoll has written: 'Gene expression profiling' -- subject(s): Labortechnik, Gene expression, Laboratory manuals, Gene Expression Profiling, Genexpression
Benefits of medical treatments that control gene expression?
I would guess that if a gene is not functioning normally then controlling the expression of that gene would be beneficial.
Describe at what level gene expression is generally controlled?
gene expression is generally controlled during transcription
