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Related Concept Videos

Histone Modification02:32

Histone Modification

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The histone proteins have a flexible N-terminal tail extending out from the nucleosome. These histone tails are often subjected to post-translational modifications such as acetylation, methylation, phosphorylation, and ubiquitination. Particular combinations of these modifications form “histone codes” that influence the chromatin folding and tissue-specific gene expression.
Acetylation
The enzyme histone acetyltransferase adds acetyl group to the histones. Another enzyme, histone...
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Histone variants are the histone proteins with structural and sequence variations. These variants may be regarded as “mutant” forms that replace their canonical histone counterparts in the nucleosomes. Specific post-translational modifications on the histone variants enable further chromatin complexity and regulate tissue-specific gene expression. The most common histone variants are from histone H2A, H2B, and linker histone H1 families. However, several variants of histone H3...
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Mass spectrometry is an important technique for the identification of pure compounds. However, it has some limitations for the analysis of complex mixtures, often due to excessive fragmentation making the spectrum too complicated to decipher. Mass spectrometry can be combined with suitable separation methods in sequence, forming hyphenated methods, which are useful in the analysis of complex mixtures.
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Scientists always try their best to record measurements with the utmost accuracy and precision. However, sometimes errors do occur. These errors can be random or systematic. Random errors are observed due to the inconsistency or fluctuation in the measurement process, or variations in the quantity itself that is being measured. Such errors fluctuate from being greater than or less than the true value in repeated measurements. Consider a scientist measuring the length of an earthworm using a...
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Protein Complex Assembly02:41

Protein Complex Assembly

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Proteins can form homomeric complexes with another unit of the same protein or heteromeric complexes with different types.  Most protein complexes self-assemble spontaneously via ordered pathways, while some proteins need assembly factors that guide their proper assembly. Despite the crowded intracellular environment, proteins usually interact with their correct partners and form functional complexes.
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Related Experiment Video

Updated: Feb 2, 2026

Analysis of Histone Antibody Specificity with Peptide Microarrays
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Systematic Analysis of SIN3 Histone Modifying Complex Components During Development.

Valerie L Barnes1, Kelly A Laity1, Maksymilian Pilecki1

  • 1Wayne State University, Department of Biological Sciences, Detroit, Michigan, 48202, United States of America.

Scientific Reports
|November 20, 2018
PubMed
Summary
This summary is machine-generated.

The SIN3 complex is crucial for development and viability. Its components have distinct roles in gene regulation, affecting cell proliferation and development, even with similar overall effects.

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Area of Science:

  • Developmental Biology
  • Epigenetics
  • Molecular Biology

Background:

  • Histone acetylation levels are vital for metazoan development and survival.
  • Histone deacetylase (HDAC) inhibitors disrupt this balance, leading to cell cycle arrest, differentiation defects, or apoptosis.
  • The SIN3 complex, involved in histone deacetylation, is essential in Drosophila and mice, with its loss causing lethality.

Purpose of the Study:

  • To systematically analyze the functional contributions of SIN3 complex components in Drosophila.
  • To understand how SIN3 complex members influence essential developmental processes.

Main Methods:

  • Systematic functional analysis of SIN3 complex components using the Drosophila model.
  • Assessment of viability, cell proliferation, and developmental phenotypes (e.g., wing development).
  • Analysis of SIN3 recruitment to polytene chromosomes following reduction of SIN3 complex components.

Main Results:

  • SIN3 associated proteins are essential for Drosophila development, viability, and cell proliferation.
  • Tissue-specific reduction of SIN3 complex components leads to abnormal wing development.
  • Individual SIN3 complex components exhibit distinct effects on SIN3 recruitment to chromosomes, despite causing similar developmental phenotypes.

Conclusions:

  • SIN3 complex components are indispensable for normal development and viability.
  • While acting through distinct molecular mechanisms, each component significantly contributes to the conserved function of the SIN3 histone deacetylase complex.
  • The study highlights the intricate functional specialization within the SIN3 complex.