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Mediator containing the CDK8 module is less active than Mediator lacking this module in supporting transcriptional activation. The head module contains: MED6, MED8, MED11, SRB4/MED17, SRB5/MED18, ROX3/MED19, SRB2/MED20 and SRB6/MED22. The middle module contains: MED1, MED4, NUT1/MED5, MED7, CSE2/MED9, NUT2/MED10, SRB7/MED21 and SOH1/MED31.
The activator bound coactivator recruits RNA polymerase and other transcription machinery that then begins transcribing the target gene. A coactivator is a type of transcriptional coregulator that binds to an activator (a transcription factor ) to increase the rate of transcription of a gene or set of genes. [ 1 ]
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.
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HPE Service Activator is a service provisioning and activation software platform from Hewlett Packard Enterprise.Once installed and integrated with a Customer Service Provider's (CSP) environment, HPESA automates the processes inherent in the creation and activation of new telecommunications services.
Activator protein 1 (AP-1) is a transcription factor that regulates gene expression in response to a variety of stimuli, including cytokines, growth factors, stress, and bacterial and viral infections. [1] AP-1 controls a number of cellular processes including differentiation, proliferation, and apoptosis. [2]
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The activator is the main factor determining the phosphor emission wavelength. The nature of the host crystal can however to some degree influence the wavelength as well. More activators can be used simultaneously. Common examples of activators are: