Activator (genetics) - Wikipedia
Activator proteins consist of two main domains: a DNA-binding domain that binds to a DNA sequence specific to the activator, and an activation domain that functions to increase gene transcription by interacting with other molecules. [1]
Coactivator (genetics) - Wikipedia
The activator, thyroid hormone receptor (TR), is bound to a corepressor preventing transcription of the target gene. The binding of a ligand hormone causes the corepressor to dissociate and a coactivator is recruited.
Activators and Repressors | Biology for Majors I - Lumen Learning
Activator. One example of an activator is the protein CAP. In the presence of cAMP, CAP binds to the promoter and increases RNA polymerase activity. In the absence of cAMP, CAP does not bind to the promoter. Transcription occurs at a low rate.
13.8: Activators and Inducers - Biology LibreTexts
2021年2月28日 · The third type of gene regulation in prokaryotic cells occurs through inducible operons, which have proteins that bind to activate or repress transcription depending on the local environment and the needs of the cell.
Transcriptional gene expression: Activators and repressors
A single gene can be regulated by both activators and repressors. In prokaryotes, activators can stabilize the transcription machinery at a weak promoter by binding both DNA and either polymerase or sigma factor.
Transcriptional activators and activation mechanisms - PMC
Activators bound to the enhancer can facilitate either the recruitment of RNA polymerase II to the promoter or its elongation. This article examines a few selected issues in understanding activator functions and activation mechanisms. Keywords: activator, transcription, co-activator, enhancer, promoter, signal transduction, development. References
Transcriptional Activator - an overview | ScienceDirect Topics
The best studied of this type of activator is the cyclic AMP receptor protein (CRP) (also referred to as catabolite gene activator protein (CAP)).
Activator (genetics) - Wikiwand
A transcriptional activator is a protein that increases transcription of a gene or set of genes. Activators are considered to have positive control over gene expression, as they function to promote gene transcription and, in some cases, are required for …
Activator - (General Genetics) - Vocab, Definition, Explanations
An activator is a protein that increases the transcription of specific genes by binding to nearby DNA. These proteins play a vital role in gene regulation, helping to enhance the expression of genes required for various cellular functions, particularly in prokaryotic organisms.
Activator (genetics) - Detailed Pedia
Activator proteins consist of two main domains: a DNA-binding domain that binds to a DNA sequence specific to the activator, and an activation domain that functions to increase gene transcription by interacting with other molecules.
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