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The eukaryotic nucleus is a double membrane-bound organelle that contains nearly all of the cell’s genetic material in the form of chromosomes. It is rightly called the “brain” of the cell as it shoulders the responsibility of responding to various physiological processes, stress, altered metabolic conditions, and other cellular signals. 
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One of the distinguishing features of eukaryotic cells is that they contain membrane-bound organelles, such as the nucleus and mitochondria, that carry out specialized functions. Since biological membranes are only selectively permeable to solutes, they help create a compartment with controlled conditions inside an organelle. These microenvironments are tailored to the organelle's specific functions and help isolate them from the surrounding cytosol.
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The nucleus is a membrane-bound organelle that acts as a control center in a eukaryotic cell. It contains chromosomal DNA, which controls gene expression and precisely regulates the production of proteins within the cell. In contrast, the DNA inside the mitochondria and chloroplast only carries out functions that are specific to those organelles.
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Tissue specificity in the nuclear envelope supports its functional complexity.

Jose I de Las Heras1, Peter Meinke1, Dzmitry G Batrakou1

  • 1Wellcome Trust Centre for Cell Biology and Institute of Cell Biology; University of Edinburgh; Edinburgh, UK.

Nucleus (Austin, Tex.)
|November 12, 2013
PubMed
Summary
This summary is machine-generated.

Mutations in nuclear envelope proteins cause inherited diseases. Tissue-specific proteins interacting with these nuclear envelope proteins may explain why these diseases affect different tissues.

Keywords:
NETNPCcell cycle regulationcytoskeletonlaminopathynuclear envelopathynuclear envelopespatial genome organizationtissue specific

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Area of Science:

  • Cell Biology
  • Genetics
  • Molecular Biology

Background:

  • The nuclear envelope, essential for cellular function, is implicated in inherited diseases.
  • A key question is how ubiquitous nuclear envelope protein mutations lead to diverse, tissue-specific pathologies.
  • A leading hypothesis suggests tissue-specific partner proteins mediate these distinct disease manifestations.

Purpose of the Study:

  • To investigate the role of tissue-specific nuclear envelope proteins in inherited diseases.
  • To explore how these proteins might explain tissue-specific disease pathologies.
  • To connect nuclear envelope protein functions with disease mechanisms and tissue evolution.

Main Methods:

  • Analysis of proteome studies detailing nuclear envelope composition across different tissues.
  • Identification of tissue-restricted nuclear envelope proteins.
  • Review of known functions of these proteins in cellular processes.

Main Results:

  • Proteome studies reveal that most nuclear envelope proteins are tissue-restricted.
  • Many identified tissue-restricted proteins have functions linked to proposed disease mechanisms.
  • These functions include roles in mechanical stability, cell cycle regulation, signaling, genome organization, gene expression, nucleocytoplasmic transport, and differentiation.

Conclusions:

  • Tissue-specific nuclear envelope proteins are likely key mediators of inherited diseases linked to the nuclear envelope.
  • The diverse functions of these proteins align with mechanisms explaining tissue-specific pathologies.
  • This finding also has implications for understanding tissue evolution.