Results 141 to 150 of about 6,766 (259)

Origin of the cell nucleus, mitosis and sex: roles of intracellular coevolution

open access: yesBiology Direct, 2010
Background The transition from prokaryotes to eukaryotes was the most radical change in cell organisation since life began, with the largest ever burst of gene duplication and novelty.
Cavalier-Smith Thomas
doaj   +1 more source

Xenopus cell-free extracts and their contribution to the study of DNA replication and other complex biological processes [PDF]

open access: yes, 2016
Here we discuss the important contributions that cell-free extracts have made to the study of complex biological processes. We provide a brief history of how cell-free extracts of frog eggs were developed to avoid many of the problems that can arise from
Blow, J. Julian, Laskey, Ronald A.
core   +1 more source

The karyopherin CRM1 is required for dendritic cell maturation

open access: yesImmunobiology, 2010
Dendritic cells (DC) are the most potent antigen-presenting cells (APC) of the immune system and are specialized to activate T as well as B cell-dependent immune responses. Mature DC are characterized by expression of CD83, a surface molecule that has been postulated to be required for efficient DC activity.
Jan, Chemnitz   +4 more
openaire   +2 more sources

ARHI (DIRAS 3), an Imprinted Tumor Suppressor Gene, Binds to Importins, and Blocks Nuclear Translocation of Stat3 [PDF]

open access: yes, 2008
ARHI (DIRAS3) is an imprinted tumor suppressor gene whose expression is lost in the majority of breast and ovarian cancers. Unlike its homologs Ras and Rap, ARHI functions as a tumor suppressor.
In Soon Chang   +11 more
core   +1 more source

Dynamics of re-constitution of the human nuclear proteome after cell division is regulated by NLS-adjacent phosphorylation [PDF]

open access: yes, 2014
Phosphorylation by the cyclin-dependent kinase 1 (Cdk1) adjacent to nuclear localization signals (NLSs) is an important mechanism of regulation of nucleocytoplasmic transport. However, no systematic survey has yet been performed in human cells to analyze
Bodaen, Mikael   +13 more
core   +2 more sources

Molecular basis for protection of ribosomal protein L4 from cellular degradation [PDF]

open access: yes, 2017
Eukaryotic ribosome biogenesis requires the nuclear import of ∼80 nascent ribosomal proteins and the elimination of excess amounts by the cellular degradation machinery.
Hoelz, André, Huber, Ferdinand M.
core   +1 more source

Calcium mediated regulation of karyopherin nuclear transport receptors

open access: yesThe FASEB Journal, 2013
Oxidative stress disrupts the normal function of cells and severe stress situations can result in apoptosis. A specific effect of oxidant stress is an increase in cellular calcium levels, which can be mimicked by treatment with the drug thapsigargin, which inhibits Ca 2+ uptake into the ...
Lauren Elizabeth Foltz   +3 more
openaire   +1 more source

Stimulation of CK2-dependent Grp94 phosphorylation by the nuclear localization signal peptide. [PDF]

open access: yes, 2011
The nuclear localization signal sequence (NLS) of SV40 Large T antigen is essential and sufficient for the nuclear translocation of the protein. Phosphorylation often modulates the intracellular distribution of signaling proteins.
Miyata, Yoshihiko   +2 more
core   +1 more source

Nuclear karyopherin α2 expression predicts poor survival in patients with advanced breast cancer irrespective of treatment intensity [PDF]

open access: bronze, 2008
Oleg Gluz   +14 more
openalex   +1 more source

Nutritional status modulates box C/D snoRNP biogenesis by regulated subcellular relocalization of the R2TP complex [PDF]

open access: yes, 2014
BACKGROUND: Box C/D snoRNPs, which are typically composed of box C/D snoRNA and the four core protein components Nop1, Nop56, Nop58, and Snu13, play an essential role in the modification and processing of pre-ribosomal RNA.
Liang Zhao   +4 more
core   +1 more source

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