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Master Transcription Regulators

Master Transcription Regulators

Master transcription regulators are regulatory proteins that are predominantly responsible for regulating the expression of multiple genes. Often these genes work in concert to drive a complex process. Activation of a master transcription regulator can lead to a cascade of transcriptional activation necessary for that outcome. These regulators can directly bind to the regulatory sequences of the various genes involved, or they can indirectly regulate transcription by binding to regulatory...

Master Transcription Regulators

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Master transcription regulators are regulatory proteins that are predominantly responsible for regulating the expression of multiple genes. Often these genes work in concert to drive a complex process. Activation of a master transcription regulator can lead to a cascade of transcriptional activation necessary for that outcome. These regulators can directly bind to the regulatory sequences of the various genes involved, or they can indirectly regulate transcription by binding to regulatory...

Regulation of Expression at Multiple Steps

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The gene expression in cells is regulated at different stages: (i) transcription, (ii) RNA processing, (iii) RNA localization, and (iv) translation. Transcriptional regulation is mediated by regulatory proteins such as transcription factors, activators, or repressors—these control gene expression by initiating or inhibiting the transcription of genes. Once a precursor or pre-mRNA is produced, it undergoes post-transcriptional modification, including 5' capping, splicing, and the addition of a...

Regulation of Expression Occurs at Multiple Steps

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Regulation of Expression Occurs at Multiple Steps

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Updated: Jul 8, 2026

Cell Surface Receptor Identification Using Genome-Scale CRISPR/Cas9 Genetic Screens

Cell Surface Receptor Identification Using Genome-Scale CRISPR/Cas9 Genetic Screens

Published on: June 6, 2020

SP1 regulates a human SNAP-25 gene expression.

Fang Cai¹, Bin Chen, Weihui Zhou

¹Department of Psychiatry, Brain Research Center, The University of British Columbia, Vancouver, British Columbia, Canada.

Journal of Neurochemistry

|January 16, 2008

Summary

This summary is machine-generated.

The study identifies the minimal promoter region for the human SNAP-25 gene, revealing SP1 as a key transcription factor regulating its expression. This finding is crucial for understanding neuropsychiatric disorders linked to SNAP-25.

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Area of Science:

Neuroscience
Molecular Biology
Genetics

Background:

Synaptosomal-associated protein of 25 kDa (SNAP-25) is vital for neurotransmitter release and implicated in neuropsychiatric disorders.
Understanding the regulation of SNAP-25 gene expression is critical for investigating these conditions.

Purpose of the Study:

To identify the minimal promoter region of the human SNAP-25 gene.
To investigate the role of transcription factors, particularly SP1, in regulating SNAP-25 gene expression.

Main Methods:

Cloning and deletion analysis of the 5' flanking region of the human SNAP-25 gene.
Luciferase reporter assays in N2A cells to measure promoter activity.
Transcriptional activation and gel shift assays to confirm SP1 binding and function.

Main Results:

A 188 bp fragment containing the transcription initiation site was identified as the minimal promoter region.
Functional SP1 response elements were found within the human SNAP-25 gene promoter.
Overexpression of SP1 enhanced SNAP-25 expression, while SP1 inhibition reduced it.

Conclusions:

SP1 is a critical transcription factor for regulating human SNAP-25 gene expression.
These findings provide insights into the molecular mechanisms underlying SNAP-25 regulation in the context of neuropsychiatric disorders.