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Identification of Cyclin-dependent Kinase 1 Specific Phosphorylation Sites by an In Vitro Kinase Assay
Published on: May 3, 2018
Microtubule-associated nuclear envelope proteins in interphase and mitosis
Ricardo A Figueroa1, Santhosh Gudise, Einar Hallberg
1Department of Neurochemistry, Stockholm University, SE-106 91 Stockholm, Sweden.
Biochemical Society Transactions
|November 23, 2011
Summary
The LINC complex connects the cytoskeleton to the nuclear interior, crucial for cell functions. This review explores how nuclear envelope proteins interact with microtubules throughout the cell cycle.
Area of Science:
- Cell Biology
- Molecular Biology
- Biochemistry
Background:
- The LINC complex (linker of nucleoskeleton and cytoskeleton) bridges the nuclear envelope (NE), connecting the cytoskeleton to the nuclear interior.
- This connection facilitates communication between NE proteins, the centrosome, and the microtubule cytoskeleton.
- Proper centrosome positioning relative to the NE is vital for cell migration and division; dislocations are observed in laminopathic disorders.
Purpose of the Study:
- To review the structural and functional aspects of microtubule association with NE proteins.
- To discuss how this association is maintained across the cell cycle.
- To highlight the importance of NE-cytoskeleton-centrosome interactions in cellular processes.
Main Methods:
- Literature review focusing on structural and functional studies.
- Analysis of existing data on LINC complex function and NE protein-microtubule interactions.
- Discussion of cell cycle-dependent mechanisms.
Main Results:
- The LINC complex acts as a physical link between the cytoskeleton and the nuclear interior.
- Specific transmembrane NE proteins associate with microtubules during mitosis, concentrating in a domain linked to the mitotic spindle.
- Centrosome positioning is critical and linked to NE integrity.
Conclusions:
- Microtubule-NE protein interactions are essential for maintaining cellular organization and function.
- Understanding these interactions provides insights into cell migration, division, and disease mechanisms.
- Further research into the cell cycle maintenance of these associations is warranted.
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