Results 161 to 170 of about 6,135 (207)

The Murine Heterochromatin Protein M31 Is Associated with the Chromocenter in Round Spermatids and Is a Component of Mature Spermatozoa

Experimental Cell Research, 2000
In mature sperm the normal nucleosomal packaging of DNA found in somatic and meiotic cells is transformed into a highly condensed form of chromatin which consists mostly of nucleoprotamines.
Sigrid Hoyer-Fender, Prim B. Singh
exaly   +3 more sources

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Isolation of the Chromocenter Fraction from Mouse Liver Nuclei

Biochemistry (Moscow), 2002
A new method for isolation of the constitutive heterochromatin (chromocenters) from interphase nuclei of mouse liver has been developed. This method allows separation of chromocenters of different size. Chromocenter fractions are essentially free of nucleoli and other contaminants.
Olga V Zatsepina, A N Prusov
exaly   +4 more sources

Acrocentric centromere organization within the chromocenter of the human sperm nucleus

Molecular Reproduction and Development, 2001
AbstractIt has recently been reported that in human sperm cells, the centromeres are clustered in a chromocenter in the interior region of the nucleus. The aim of the present study was to determine the intra‐chromocenter organization of the five centromeres of the acrocentric chromosomes responsible for the biosynthesis of rRNA.
Aliza Amiel, B Bartoov, Moshe Fejgin
exaly   +4 more sources

Genetic Control of the Formation and Reorganization of Chromocenter in Drosophila

Russian Journal of Genetics, 2001
The chromocenter integrates the entire Drosophilagenome into a unit. The formation and reorganization of chromocenter are genetically determined. Currently, several mutations affecting the structure of chromocenter have been described. In this work, I present evidence on the time of the formation and reorganization of chromocenter in mitotic and ...
V L Chubykin
exaly   +3 more sources

Stella controls chromocenter formation through regulation of Daxx expression in 2-cell embryos

Biochemical and Biophysical Research Communications, 2015
Yasuyoshi Kimura, Tohru Kimura, Toru Nakano   +2 more
exaly   +2 more sources

Chromocenter association in plant cell nuclei: determinants, functional significance, and evolutionary implications

, 1998
Owing to close associations of different chromosomes at their heterochromatic regions, nuclear repatternings consisting of changes in the number and size of the chromocenters may occur with tissue differentiation in plant species.
M. Ceccarelli, L. Morosi, P. Cionini
semanticscholar   +2 more sources

Evolutional heterochromatin condensation delineates chromocenter formation and retrotransposon silencing in plants

Nature Plants
Heterochromatic condensates (chromocenters) are critical for maintaining the silencing of heterochromatin. It is therefore puzzling that the presence of chromocenters is variable across plant species. Here we reveal that variations in the plant heterochromatin protein ADCP1 confer a diversity in chromocenter formation via phase separation.
Weifeng Zhang, Lingling Cheng, Kuan Li, Leiming Xie, Jinyao Ji, Xue Lei, Anjie Jiang, Chunlai Chen, Hai-Tao Li, Pilong Li, Qianwen Sun   +10 more
semanticscholar   +3 more sources

Immunological identification of a chromocenter-associated protein in polytene chromosomes of Drosophila.

Experimental Cell Research, 1980
H. Will, Ekkehard K. F. Bautz
semanticscholar   +2 more sources

Nuclear chromocenters of cultured chicken cells

Experimental Cell Research, 1962
A SEX dimorphism of interphase chick nuclei has been reported by Kosin and Ishizaki [2, 41. Ashley and The&s [l 1, on the other hand, were unable to find an interphase nuclear dimorphism in chickens, chromatin masses being common in the nuclei of both sexes. Ohno, Kaplan, and Kinosita [9] have reported a sex dimorphism for prophase nuclei.
C.P. Miles, S.D. Storey
openaire   +1 more source