Results 31 to 40 of about 118,231 (380)

CENH3-GFP: a visual marker for gametophytic and somatic ploidy determination in Arabidopsis thaliana [PDF]

open access: yes, 2016
Background: The in vivo determination of the cell-specific chromosome number provides a valuable tool in several aspects of plant research. However, current techniques to determine the endosystemic ploidy level do not allow non-destructive, cell-specific
Angenon, Geert   +4 more
core   +5 more sources

Centromere domain organization and histone modifications

open access: yesBrazilian Journal of Medical and Biological Research, 2002
Centromere function requires the proper coordination of several subfunctions, such as kinetochore assembly, sister chromatid cohesion, binding of kinetochore microtubules, orientation of sister kinetochores to opposite spindle poles, and their movement ...
P. Bjerling, K. Ekwall
doaj   +1 more source

Epigenetic dynamics of centromeres and neocentromeres in Cryptococcus deuterogattii.

open access: yesPLoS Genetics, 2021
Deletion of native centromeres in the human fungal pathogen Cryptococcus deuterogattii leads to neocentromere formation. Native centromeres span truncated transposable elements, while neocentromeres do not and instead span actively expressed genes.
Klaas Schotanus   +2 more
doaj   +1 more source

Recent insights into mechanisms preventing ectopic centromere formation

open access: yesOpen Biology, 2021
The centromere is a specialized chromosomal structure essential for chromosome segregation. Centromere dysfunction leads to chromosome segregation errors and genome instability.
Qianhua Dong   +3 more
doaj   +1 more source

Amplification and adaptation of centromeric repeats in polyploid switchgrass species. [PDF]

open access: yes, 2018
Centromeres in most higher eukaryotes are composed of long arrays of satellite repeats from a single satellite repeat family. Why centromeres are dominated by a single satellite repeat and how the satellite repeats originate and evolve are among the most
Braz, Guilherme T   +10 more
core   +2 more sources

Temporal characterization of homology-independent centromere coupling in meiotic prophase. [PDF]

open access: yesPLoS ONE, 2010
Over the past thirty years several reports of the pairing or association of non-homologous centromeres during meiotic prophase have appeared in the literature.
David Obeso, Dean S Dawson
doaj   +1 more source

The architecture of chicken chromosome territories changes during differentiation [PDF]

open access: yes, 2004
BACKGROUND: Between cell divisions the chromatin fiber of each chromosome is restricted to a subvolume of the interphase cell nucleus called chromosome territory.
Bonifer, C.   +7 more
core   +4 more sources

Heterochromatin and RNAi regulate centromeres by protecting CENP-A from ubiquitin-mediated degradation. [PDF]

open access: yesPLoS Genetics, 2018
Centromere is a specialized chromatin domain that plays a vital role in chromosome segregation. In most eukaryotes, centromere is surrounded by the epigenetically distinct heterochromatin domain. Heterochromatin has been shown to contribute to centromere
Jinpu Yang   +7 more
doaj   +1 more source

Transposable elements: genome innovation, chromosome diversity, and centromere conflict

open access: yesChromosome Research, 2018
Although it was nearly 70 years ago when transposable elements (TEs) were first discovered “jumping” from one genomic location to another, TEs are now recognized as contributors to genomic innovations as well as genome instability across a wide variety ...
Savannah J. Klein, R. O’Neill
semanticscholar   +1 more source

Centromere transcription allows CENP-A to transit from chromatin association to stable incorporation

open access: yesJournal of Cell Biology, 2018
Centromeres are essential for chromosome segregation and are specified epigenetically by the presence of the histone H3 variant CENP-A. In flies and humans, replenishment of the centromeric mark is uncoupled from DNA replication and requires the removal ...
G. Bobkov, N. Gilbert, P. Heun
semanticscholar   +1 more source

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