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Related Concept Videos

Transcription Factors02:16

Transcription Factors

83.4K
Tissue-specific transcription factors contribute to diverse cellular functions in mammals. For example, the gene for beta globin, a major component of hemoglobin, is present in all cells of the body. However, it is only expressed in red blood cells because the transcription factors that can bind to the promoter sequences of the beta globin gene are only expressed in these cells. Tissue-specific transcription factors also ensure that mutations in these factors may impair only the function of...
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General Transcription Factors01:30

General Transcription Factors

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Tissue-specific transcription factors contribute to diverse cellular functions in mammals. For example, the gene for beta globin, a major component of hemoglobin, is present in all cells of the body. However, it is only expressed in red blood cells because the transcription factors that can bind to the promoter sequences of the beta globin gene are only expressed in these cells. Tissue-specific transcription factors also ensure that mutations in these factors may impair only the function of...
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Combinatorial Gene Control02:33

Combinatorial Gene Control

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Combinatorial gene control is the synergistic action of several transcriptional factors to regulate the expression of a single gene. The absence of one or more of these factors may lead to a significant difference in the level of gene expression or repression.
The expression of more than 30,000 genes is controlled by approximately 2000-3000 transcription factors. This is possible because a single transcription factor can recognize more than one regulatory sequence. The specificity in gene...
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Co-activators and Co-repressors02:04

Co-activators and Co-repressors

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Gene transcription is regulated by the synergistic action of several proteins that form a complex at a gene regulatory site. This is observed in eukaryotes, where the regulation of gene expression is a complex process. Regulatory proteins in eukaryotes can broadly be classified into two types – regulators that bind directly to specific DNA sequences and co-regulators that associate with regulatory proteins but cannot directly bind to the DNA. These co-regulators are further divided into...
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Co-activators and Co-repressors02:04

Co-activators and Co-repressors

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No description available
3.2K
RNA Polymerase II Accessory Proteins02:36

RNA Polymerase II Accessory Proteins

11.3K
Proteins that regulate transcription can do so either via direct contact with RNA Polymerase or through indirect interactions facilitated by adaptors, mediators, histone-modifying proteins, and nucleosome remodelers. Direct interactions to activate transcription is seen in bacteria as well as in some eukaryotic genes. In these cases, upstream activation sequences are adjacent to the promoters, and the activator proteins interact directly with the transcriptional machinery. For example, in...
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Related Experiment Video

Updated: Mar 10, 2026

Identification of Transcription Factor Regulators using Medium-Throughput Screening of Arrayed Libraries and a Dual-Luciferase-Based Reporter
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Identification of Transcription Factor Regulators using Medium-Throughput Screening of Arrayed Libraries and a Dual-Luciferase-Based Reporter

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Re-utilization of a transcription factor.

Filipe Pinto-Teixeira1,2, Claude Desplan1,2

  • 1Department of Biology, New York University, New York, United States.

Elife
|October 15, 2016
PubMed
Summary

The transcription factor Krüppel plays a dual role in neuron development. This research explores its specific functions in the nervous system

Keywords:
D. melanogastercell fate specificationdevelopmental biologydevelopmental neurosciencefeedforward regulatory pathwaysneurosciencestem cells

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Last Updated: Mar 10, 2026

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Area of Science:

  • Neuroscience
  • Developmental Biology
  • Genetics

Background:

  • Transcription factors are crucial regulators of gene expression.
  • Krüppel (Kr) is a known transcription factor with diverse roles.
  • Neuron development involves complex genetic programs.

Purpose of the Study:

  • To elucidate the specific functions of the transcription factor Krüppel in neuronal development.
  • To investigate the dual roles of Krüppel in the nervous system.

Main Methods:

  • Gene expression analysis
  • Genetic manipulation in model organisms
  • Cellular and molecular biology techniques

Main Results:

  • Krüppel exhibits distinct functions during different stages of neurogenesis.
  • The study identified specific downstream targets of Krüppel in developing neurons.
  • Krüppel's activity is essential for proper neuronal differentiation and circuit formation.

Conclusions:

  • Krüppel acts as a key regulator with context-dependent roles in neuron development.
  • Understanding Krüppel's functions provides insights into neurodevelopmental disorders.
  • Further research into Krüppel's regulatory network is warranted.