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Regulation of gene expression, or gene regulation, [1] includes a wide range of mechanisms that are used by cells to increase or decrease the production of specific gene products (protein or RNA). Sophisticated programs of gene expression are widely observed in biology, for example to trigger developmental pathways, respond to environmental ...
In molecular biology and genetics, transcriptional regulation is the means by which a cell regulates the conversion of DNA to RNA (transcription), thereby orchestrating gene activity. A single gene can be regulated in a range of ways, from altering the number of copies of RNA that are transcribed, to the temporal control of when the gene is ...
In the regulation of gene expression, studied in evolutionary developmental biology (evo-devo), both activators and repressors play important roles. [ 4 ] Regulatory genes can also be described as positive or negative regulators, based on the environmental conditions that surround the cell.
C15orf62 is a protein which in humans is encoded by the C15orf62 gene. [5] The protein displays high levels of expression in the esophagus and skin of human tissue. [6] C15orf62 is a regulatory protein involved in mitochondrial function and cytoskeletal organization, playing roles in ribosomal biogenesis, Rho protein signal transduction, and protein turnover through ubiquitination. [7]
A transcriptional activator is a protein (transcription factor) that increases transcription of a gene or set of genes. [1] Activators are considered to have positive control over gene expression, as they function to promote gene transcription and, in some cases, are required for the transcription of genes to occur.
This means, for example, that in the case of a cis-regulatory module regulated by two transcription factors, experimentally determined gene-regulation functions can not be described by the 16 possible Boolean functions of two variables. Non-Boolean extensions of the gene-regulatory logic have been proposed to correct for this issue. [2]
PGC-1α provides a direct link between external physiological stimuli and the regulation of mitochondrial biogenesis, and is a major factor causing slow-twitch rather than fast-twitch muscle fiber types. [10] Endurance exercise has been shown to activate the PGC-1α gene in human skeletal muscle. [11]
Since the 3D structure of DNA influences the regulation of genes, CTCF's activity influences the expression of genes. CTCF is thought to be a primary part of the activity of insulators, sequences that block the interaction between enhancers and promoters. CTCF binding has also been both shown to promote and repress gene expression.
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