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Related Concept Videos

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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Master Transcription Regulators02:23

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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...
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The TGF-β signaling pathway regulates cell growth, differentiation, adhesion, motility, and development. TGF-β ligands that induce TGF-β signaling are synthesized in their latent form. Several proteases or cell surface receptors such as integrins act upon the latent form, releasing the active ligand. There are three types of mammalian TGF-βs: (TGF-β1, TGF-β2, and TGF-β3) that bind as homodimers or heterodimers to TGF-β receptors. The TGF-β receptors...
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The cadherins are a superfamily of cell adhesion molecules comprising over 180 variants, with specific tissues expressing a particular combination of cadherin types. Cadherins generally exhibit homophilic binding; i.e., cadherins on one cell bind to cadherins of the same or closely related type on another cell. Thus, cells of the same type have a specific affinity to bind to each other and sort themselves into clusters to form tissues.
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Related Experiment Video

Updated: Apr 23, 2026

Mapping the Structure-Function Relationships of Disordered Oncogenic Transcription Factors Using Transcriptomic Analysis
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Diversity in TAF proteomics: consequences for cellular differentiation and migration.

Jekaterina Kazantseva1, Kaia Palm2

  • 1Protobios LLC, Mäealuse 4, Tallinn 12618, Estonia. katja@protobios.com.

International Journal of Molecular Sciences
|September 23, 2014
PubMed
Summary

TATA-box associated factor 4 (TAF4) isoforms, generated by alternative splicing, control cell differentiation. This diversification of the transcription initiation apparatus is key for cell development and cancer stem cells.

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Area of Science:

  • Molecular Biology
  • Cell Biology
  • Gene Regulation

Background:

  • Cell differentiation involves dynamic gene regulation and specific DNA-binding factors.
  • The role of the core transcription machinery in cell differentiation is less understood.
  • General transcription factors influence cell function through spatiotemporal activity.

Purpose of the Study:

  • To review the role of TATA-box associated factor 4 (TAF4) and its isoforms in lineage-specific differentiation.
  • To explore the impact of alternative splicing on TAF4 function during differentiation.
  • To investigate TAF4's role in normal mesenchymal stem cells and cancer stem cells.

Main Methods:

  • Review of existing literature on TAF4 and alternative splicing in cell differentiation.
  • Analysis of recent findings on TAF4's role in mesenchymal stem cell and cancer stem cell differentiation.
  • Focus on the transcription initiation apparatus and its regulation.

Main Results:

  • TAF4 and its alternatively spliced isoforms play a crucial role in controlling cell differentiation.
  • Alternative splicing diversifies the transcription initiation apparatus, influencing differentiation.
  • TAF4's function is critical in both normal stem cell development and cancer stem cell biology.

Conclusions:

  • Cell differentiation, including induction, control, and maintenance, relies on the diversification of the transcription initiation apparatus.
  • Alternative splicing of TAF4 is a key mechanism orchestrating cell differentiation.
  • Understanding TAF4's role provides insights into developmental processes and cancer stem cell biology.