منابع مشابه
Interphase phosphorylation of lamin A.
Nuclear lamins form the major structural elements that comprise the nuclear lamina. Loss of nuclear structural integrity has been implicated as a key factor in the lamin A/C gene mutations that cause laminopathies, whereas the normal regulation of lamin A assembly and organization in interphase cells is still undefined. We assumed phosphorylation to be a major determinant, identifying 20 prime ...
متن کاملInterphase phosphorylation of the Drosophila nuclear lamin: site-mapping using a monoclonal antibody.
The Drosophila nuclear lamin is highly phosphorylated during interphase. Two interphase isoforms, differing in degree of phosphorylation, can be distinguished by one-dimensional SDS-polyacrylamide gel electrophoresis. One migrates with an apparent mass of 74 kDa (lamin Dm1); the other is more highly phosphorylated and migrates as a 76 kDa protein (lamin Dm2). We generated a monoclonal antibody,...
متن کاملPermanent farnesylation of lamin A mutants linked to progeria impairs its phosphorylation at serine 22 during interphase
Mutants of lamin A cause diseases including the Hutchinson-Gilford progeria syndrome (HGPS) characterized by premature aging. Lamin A undergoes a series of processing reactions, including farnesylation and proteolytic cleavage of the farnesylated C-terminal domain. The role of cleavage is unknown but mutations that affect this reaction lead to progeria. Here we show that interphase serine 22 ph...
متن کاملThe Different Function of Single Phosphorylation Sites of Drosophila melanogaster Lamin Dm and Lamin C
Lamins' functions are regulated by phosphorylation at specific sites but our understanding of the role of such modifications is practically limited to the function of cdc 2 (cdk1) kinase sites in depolymerization of the nuclear lamina during mitosis. In our study we used Drosophila lamin Dm (B-type) to examine the function of particular phosphorylation sites using pseudophosphorylated mutants m...
متن کاملDefects in lamin B1 expression or processing affect interphase chromosome position and gene expression
Radial organization of nuclei with peripheral gene-poor chromosomes and central gene-rich chromosomes is common and could depend on the nuclear boundary as a scaffold or position marker. To test this, we studied the role of the ubiquitous nuclear envelope (NE) component lamin B1 in NE stability, chromosome territory position, and gene expression. The stability of the lamin B1 lamina is dependen...
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ژورنال
عنوان ژورنال: Journal of Cell Science
سال: 2014
ISSN: 1477-9137,0021-9533
DOI: 10.1242/jcs.141820