Journal
NATURE REVIEWS MOLECULAR CELL BIOLOGY
Volume 14, Issue 1, Pages 13-24Publisher
NATURE PORTFOLIO
DOI: 10.1038/nrm3488
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Funding
- Singapore Biomedical Research Council
- Singapore Agency for Science, Technology and Research (A*STAR)
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The nuclear lamina is an important structural determinant for the nuclear envelope as a whole, attaching chromatin domains to the nuclear periphery and localizing some nuclear envelope proteins. The major components of the lamina are the A-type and B-type lamins, which are members of the intermediate filament protein family. Whereas the expression of A-type lamins is developmentally regulated, B-type lamins, as a class, are found in all cells. The association of B-type lamins with many aspects of nuclear function has led to the view that these are essential proteins, and there is growing evidence suggesting that they regulate cellular senescence. However, B-type lamins are dispensable in certain cell types in vivo, and neither A-type nor B-type lamins may be required in early embryos or embryonic stem cells. The picture that is beginning to emerge is of a complex network of interactions at the nuclear periphery that may be defined by cell- and tissue-specific functions.
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