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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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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 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...
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Transcription01:10

Transcription

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Overview
Transcription is the process of synthesizing RNA from a DNA sequence by RNA polymerase. It is the first step in producing a protein from a gene sequence. Additionally, many other proteins and regulatory sequences are involved in the proper synthesis of messenger RNA (mRNA). Regulation of transcription is responsible for the differentiation of all the different types of cells and often for the proper cellular response to environmental signals.
Transcription Can Produce Different Kinds...
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Transcription01:17

Transcription

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Transcription is the synthesis of RNA from a DNA sequence by RNA polymerase. It is the first step in producing a protein from a gene sequence. Additionally, many other proteins and regulatory sequences are involved in correctly synthesizing messenger RNA (mRNA). Transcriptional regulation is responsible for the differentiation of different types of cells and often for the proper cellular response to environmental signals.
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In eukaryotes,...
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In Vivo Functional Study of Disease-associated Rare Human Variants Using Drosophila
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Tbx1: Transcriptional and Developmental Functions.

A Baldini1, F G Fulcoli2, E Illingworth3

  • 1University of Naples, Federico II, Naples, Italy; Institute of Genetics and Biophysics of the CNR, Naples, Italy.

Current Topics in Developmental Biology
|January 7, 2017
PubMed
Summary

Tbx1, a gene crucial for mammalian development, regulates numerous genes via epigenetic modifications. This review explores its mechanisms and role in cardiac, vascular, and nervous system development.

Keywords:
Cardiac developmentDNA bindingDiGeorge syndromeHistone modificationsPharyngeal apparatusTbx1

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Area of Science:

  • Developmental Biology
  • Genetics
  • Epigenetics

Background:

  • Tbx1 is a T-box transcription factor essential for mammalian development.
  • Tbx1 haploinsufficiency is linked to a significant genetic disorder.
  • Its dynamic expression pattern begins early in mouse embryogenesis (E7.5).

Purpose of the Study:

  • To review recent literature on Tbx1's gene regulatory mechanisms.
  • To elucidate Tbx1's role in mammalian development, focusing on key systems.
  • To understand how Tbx1 influences cardiac, vascular, and central nervous systems.

Main Methods:

  • Literature review of recent studies on Tbx1.
  • Analysis of Tbx1's function as a transcription factor.
  • Examination of Tbx1's epigenetic regulatory roles.

Main Results:

  • Tbx1 acts as a regulator of a large number of genes.
  • Tbx1's regulatory function is primarily mediated through epigenetic modifications.
  • Tbx1 plays a critical role in the development of the heart, vasculature, and CNS.

Conclusions:

  • Tbx1's complex regulatory role, distinct from strong activation or repression, is key to its developmental functions.
  • Understanding Tbx1 mechanisms provides insights into developmental disorders.
  • Further research into Tbx1 is vital for comprehending mammalian organogenesis.