Results 111 to 120 of about 3,763 (189)

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

Genome-Wide Localization of the Nuclear Transport Machinery Couples Transcriptional Status and Nuclear Organization

open access: yes, 2004
The association of genes with the nuclear pore complex (NPC) and nuclear transport factors has been implicated in transcriptional regulation. We therefore examined the association of components of the nuclear transport machinery including karyopherins ...
Christopher R Brown   +11 more
core   +1 more source

The distribution of karyopherin β proteins in Alzheimer's disease

open access: yesThe FASEB Journal, 2008
Electron microscopic studies of Alzheimer's disease (AD) revealed an intimate relationship between paired helical filaments and nuclear pores, structures with a key role in bidirectional nucleocytoplasmic transport. This association led us to explore potential abnormalities in transport that may contribute to tangle formation and other protein ...
Lynette G Sheffield, Suzanne S Mirra
openaire   +1 more source

Bcp1 is the nuclear chaperone of Rpl23 in Saccharomyces cerevisiae [PDF]

open access: yes, 2017
Eukaryotic ribosomes are composed of rRNAs and ribosomal proteins. Ribosomal proteins are translated in the cytoplasm and imported into the nucleus for assembly with the rRNAs.
Ting, Ya Han   +6 more
core  

Karyopherin α2 is a maternal effect gene required for early embryonic development and female fertility in mice [PDF]

open access: yes
The nuclear transport of proteins plays an important role in mediating the transition from egg to embryo and distinct karyopherins have been implicated in this process. Here, we studied the impact of KPNA2 deficiency on preimplantation embryo development
Depping, R.   +6 more
core   +1 more source

Epstein–Barr Virus Nuclear Antigen-1 Binds to Nuclear Transporter Karyopherin α1/NPI-1 in Addition to Karyopherin α2/Rch1

open access: yesVirology, 2000
We searched for cellular proteins that interact with Epstein-Barr (EBV) virus nuclear antigen-1, which is a latent EBV origin-binding protein detected in all EBV latently infected cells and essential for maintenance of the latent EBV genome, by a yeast two-hybrid screening of a B lymphocyte cDNA library in this study.
Ito, Sayuri   +6 more
openaire   +2 more sources

Analysis of Regulation of Major Mitotic Assembly Events In Vitro by Nuclear Import and Export Receptors [PDF]

open access: yes, 2018
This dissertation is an analysis of regulation of major mitotic assembly events by nuclear transport receptors, or karyopherins. Karyopherins, composed of both importins and exportins, are a large family of proteins that transport specific proteins and ...
Nord, Matthew
core  

Identification of nucleocytoplasmic transport signals in Rps15 and Ltv1, two proteins related to small ribosomal subunit export [PDF]

open access: yes, 2020
[EN] Ribosomes are indispensable organelles for cell survival. Eukaryotic ribosomes are made up of two subunits (60S and 40S), which are independently exported from the nucleolus to the cytoplasm, where they are finally assembled to form the functional ...
González Benito, Adriana
core  

FUNCTIONAL AND MECHANISTIC CHARACTERIZATION OF THE NUCLEAR IMPORT RECEPTOR KARYOPHERIN-α2 IN LIVER CANCER [PDF]

open access: yes, 2019
Exchange of macromolecules between the nucleo- and cytoplasm is provided by the nuclear transport system (NTS). Karyopherins represent essential components of NTS) by serving as nuclear transport receptors/adaptor proteins.
Drucker, Elisabeth
core   +1 more source

Characterization of the mechanism of action of Transportin in mitotic spindle assembly [PDF]

open access: yes, 2011
In eukaryotic cells, proteins known as karyopherins function during interphase as nuclear import and export receptors. Importin [beta] and Transportin, two such karyopherins, act to carry proteins with different recognition sites into the interphase ...
Swift-Taylor, Mary Elizabeth
core  

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