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well good examples of proteins regulating gene expression can be seen in most prokaryotic operons. Such as the trp operon or lac operon. These both contain sites upstream from the multiple cistrons, which code for repressor proteins (trpR and lacI - is says I but its still a repressor protein being produced). The trp operon is under negative repressible control which means transcription is turned of by the repressor binding to the operator gene (and also switched of by presence of an effector - in this case tryptophan). The same for the lac operon (except its under inducible negative control so is switched of until an effector is present - lactose).
Also i the lac operon it is under positive control by the catabolite activator protein (CAP) - When glucose is in low levels the levels of CAMP (cyclic adenosine mono-phosphate) tend to be high. CAMP binds to CAP allowing CAP to bind to a region upstream from the Lac operons promoter (Approx 16 base pairs up). This assists in allowing RNA polymerase to bind to the DNA upregulating he gene expression for the cistrons downstream).
In eukaryotes (I.e. us) however it is not a simple as a well organised length of DNA like the operons. They use a complex mix of control mechanisms. Such as enhancers, silencers etc..
The 2 types of regulation can be categorised into 2 groups:
Cis- acting elements and trans -acting.
Cis acting - these are regions of DNA that happen to be within the close proximity of the gene they wish to (excuse the anthropomorphism) regulate. These regions of DNA do not encode proteins but are acted on by trans-acting factors.
Trans elements - these are genes which encode proteins, they are usually found quite some distance away from the target length of DNA for regulation.
Probably a bit long winded, but its best to be thorough(ish) ;)
What else can I help you with?
Do proteins code for genes in the process of genetic expression?
Yes, proteins do not code for genes in the process of genetic expression. Genes code for proteins through the process of transcription and translation.
What is the relationship between genes and proteins in the process of genetic expression?
Genes contain the instructions for making proteins through a process called genetic expression. Genes are transcribed into messenger RNA (mRNA), which is then translated into proteins. This process is essential for the functioning of cells and organisms.
Do all genes code for proteins?
No, not all genes code for proteins. Some genes code for other types of molecules, such as RNA, which play important roles in regulating gene expression and other cellular processes.
Does RNA contain genes?
RNA itself does not contain genes, but RNA is involved in the expression of genes. RNA is transcribed from genes in the DNA and carries the genetic information to create proteins through a process called translation.
Genes that tell the cell to make other molecules called?
Genes that tell the cell to make other molecules are called regulatory genes. These genes play a crucial role in controlling the expression of other genes by initiating the production of specific proteins or regulatory molecules. They are essential for coordinating various cellular processes and maintaining normal functioning of the cell.
Do proteins code for genes in the process of genetic expression?
Yes, proteins do not code for genes in the process of genetic expression. Genes code for proteins through the process of transcription and translation.
What is the relationship between genes and proteins in the process of genetic expression?
Genes contain the instructions for making proteins through a process called genetic expression. Genes are transcribed into messenger RNA (mRNA), which is then translated into proteins. This process is essential for the functioning of cells and organisms.
Does proteins determine Genes?
No, proteins do not determine genes. Genes are segments of DNA that encode instructions for making proteins. Proteins are the products of gene expression, meaning that genes are responsible for determining the sequence and structure of proteins.
Do all genes code for proteins?
No, not all genes code for proteins. Some genes code for other types of molecules, such as RNA, which play important roles in regulating gene expression and other cellular processes.
The kinds of proteins produced you a cell are related to what?
The types of proteins produced by the Cell are those that are allowed by the Expression of the Genes in a cell's Dna.
What is the expression of a gene?
Genes basically express proteins that are the organisms phenotype; the collection of the physiological and behavioral traits of an organism.
In the central theory of genes expression what is the process that uses mRNA and amino acids to make proteins called?
translation
Does RNA contain genes?
RNA itself does not contain genes, but RNA is involved in the expression of genes. RNA is transcribed from genes in the DNA and carries the genetic information to create proteins through a process called translation.
The stuff of the genes?
Genes are made up of DNA, which carries the instructions for building and maintaining an organism's cells and tissues. They determine an organism's traits and characteristics through the expression of specific proteins. Gene expression is regulated by various mechanisms that control when and where specific genes are turned on or off.
Which describes the process through which certain genes within a cell are activated to produce proteins while others are not?
gene expression
Genes that tell the cell to make other molecules called?
Genes that tell the cell to make other molecules are called regulatory genes. These genes play a crucial role in controlling the expression of other genes by initiating the production of specific proteins or regulatory molecules. They are essential for coordinating various cellular processes and maintaining normal functioning of the cell.
What are some examples of housekeeping genes commonly found in biological systems?
Housekeeping genes are genes that are constantly active and essential for basic cellular functions. Some common examples found in biological systems include genes encoding for proteins involved in cell structure (e.g. actin and tubulin), metabolism (e.g. glyceraldehyde-3-phosphate dehydrogenase), and gene expression (e.g. ribosomal proteins). These genes are necessary for the normal functioning of cells and are often used as reference genes in gene expression studies.
