Results 21 to 30 of about 1,337,831 (333)

Analysis of the extranucleolar ribonucleoprotein particles of Cycas revoluta Thunb. (Cycadaceae) and Ceratozamia mexicana Brongn. (Zamiaceae)

open access: yesBotan‪ical Sciences, 2022
Background: Nuclear ribonucleoprotein particles play a key role in RNA processing and in the gene expression pathway. Interchromatin granules (GICs) involved in the metabolism of pre-messenger RNA (pre-mRNA) were described in Allium cepa and ...
Lourdes-Teresa Agredano-Moreno   +3 more
doaj   +1 more source

MONONUCLEOTIDES OF THE CELL NUCLEUS [PDF]

open access: yesThe Journal of General Physiology, 1957
1. It has been demonstrated by ion exchange chromatography that the cell nucleus contains mononucleotides of adenine, guanine, cytosine, uracil, together with diphosphopyridine nucleotide, and several uridine diphosphate derivatives; the adenine nucleotides predominating in amount.
V. G. Allfrey   +2 more
openaire   +3 more sources

Nuclear Phosphoinositides—Versatile Regulators of Genome Functions

open access: yesCells, 2019
The many functions of phosphoinositides in cytosolic signaling were extensively studied; however, their activities in the cell nucleus are much less clear.
Enrique Castano   +7 more
doaj   +1 more source

Cell Nucleus in Context [PDF]

open access: yesCritical Reviews™ in Eukaryotic Gene Expression, 2000
The molecular pathways that participate in regulation of gene expression are being progressively unraveled. Extracellular signals, including the binding of extracellular matrix and soluble molecules to cell membrane receptors, activate specific signal transducers that process information inside the cell leading to alteration in gene expression. Some of
Philippe Pujuguet   +2 more
openaire   +3 more sources

The protozoan nucleus [PDF]

open access: yes, 2016
The nucleus is arguably the defining characteristic of eukaryotes, distinguishing their cell organisation from both bacteria and archaea. Though the evolutionary history of the nucleus remains the subject of debate, its emergence differs from several ...
McCulloch, Richard, Navarro, Miguel
core   +1 more source

Limited Proteolysis-Coupled Mass Spectrometry Identifies Phosphatidylinositol 4,5-Bisphosphate Effectors in Human Nuclear Proteome

open access: yesCells, 2021
Specific nuclear sub-compartments that are regions of fundamental processes such as gene expression or DNA repair, contain phosphoinositides (PIPs). PIPs thus potentially represent signals for the localization of specific proteins into different nuclear ...
Martin Sztacho   +5 more
doaj   +1 more source

MODELLING THE INFLUENCE OF NUCLEUS ELASTICITY ON CELL INVASION IN FIBER NETWORKS AND MICROCHANNELS [PDF]

open access: yes, 2013
Cell migration in highly constrained extracellular matrices is exploited in scaffold-based tissue engineering and is fundamental in a wide variety of physiological and pathological phenomena, among others in cancer invasion and development. Research into
Preziosi, Luigi, Scianna, Marco
core   +1 more source

Quantitative super-resolution microscopy reveals the differences in the nanoscale distribution of nuclear phosphatidylinositol 4,5-bisphosphate in human healthy skin and skin warts

open access: yesFrontiers in Cell and Developmental Biology, 2023
Introduction: Imaging of human clinical formalin-fixed paraffin-embedded (FFPE) tissue sections provides insights into healthy and diseased states and therefore represents a valuable resource for basic research, as well as for diagnostic and clinical ...
Peter Hoboth   +5 more
doaj   +1 more source

Immunocytochemical localization of chromatin regions UV-microirradiated in S phase or anaphase : Evidence for a territorial organization of chromosomes during cell cycle of cultured Chinese hamster cells [PDF]

open access: yes, 1983
Chinese hamster cells (M3-1 line) in S phase were laser-UV-microirradiated (λ, 257 nm) at a small site of the nucleus. Cells were fixed either immediately thereafter or in subsequent stages of the cell cycle, including prophase and metaphase.
Avivi   +33 more
core   +1 more source

Heterogeneity of Organization of Subcompartments in DSB Repair Foci

open access: yesFrontiers in Genetics, 2022
Cells assemble compartments around DNA double-strand breaks (DSBs). The assembly of this compartment is dependent on the phosphorylation of histone H2AX, the binding of MDC1 to phosphorylated H2AX, and the assembly of downstream signaling and repair ...
Natnael G. Abate, Michael J. Hendzel
doaj   +1 more source

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