Interphase Chromatin
Mostrando 1-12 de 95 artigos, teses e dissertações.
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1. Characterization of interphase nuclei from triploid hybrids between Pennisetum purpureum Schumach and Pennisetum glaucum (L.) R. Br.
2010
Ciência e agrotecnologia. Publicado em: 2011
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2. Chromatin differentiation between Theobroma cacao L. and T. grandiflorum Schum
A comparative analysis of mitotic chromosomes of Theobroma cacao (cacao) and T. grandiflorum (cupuaçu) was performed aiming to identify cytological differences between the two most important species of this genus. Both species have symmetric karyotypes, with 2n = 20 metacentric chromosomes ranging in size from 2.00 to 1.19 µm (cacao) and from 2.21 to 1.15
Genetics and Molecular Biology. Publicado em: 18/12/2009
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3. Peripheral position of CCND1 and HER-2/neu oncogenes within chromosome territories in esophageal and gastric cancers non-related to amplification and overexpression
Interphase chromosomes have been shown to occupy discrete regions of the nucleus denominated chromosome territories (CTs), their active genes being preferentially positioned on the surfaces of these CTs, where they are accessible to transcriptional machinery. By means of FISH (Fluorescence in situ Hybridization), we analyzed the CCND1 and HER-2/neu gene posi
Genetics and Molecular Biology. Publicado em: 13/03/2009
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4. Proteins of metaphase chromosomes and interphase chromatin.
Metaphase chromosomal and interphase chromatin proteins from cells of two species have been compared by polyacrylamide gel electrophoresis. Consistent, common changes in the quantitative distribution of the nonhistone chromosomal proteins are observed in both species. Proteins of ca. 65,000 and 68,000 MW are enriched in interphase chromatin while proteins of
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5. Cell-cycle-dependent dissociation of histone H1 from chromatin in nuclei of P. polycephalum.
The dissociation curves of histone H1 from chromatin in interphase and metaphase nuclei from Physarum polycephalum have been determined using CaCl2 as dissociating agent. H1 is less strongly bound to metaphase chromosomes than to interphase chromatin. However, no differences could be detected in the binding of Hl to early S, late S or G2 phase chromatin. The
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6. Metaphase chromosome analysis by ligation-mediated PCR: heritable chromatin structure and a comparison of active and inactive X chromosomes.
We report that ligation-mediated PCR (LMPCR) can be used for high-resolution study of metaphase chromosomes, and we discuss the role of metaphase chromatin structure in the preservation of differentiated cell states. The X chromosome-linked human PGK1 (phosphoglycerate kinase 1) promoter region was investigated, and euchromatic active X chromosome (Xa) metap
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7. Induction of chromatin condensation by nuclear expression of a novel arginine-rich cationic protein genetically engineered from the enhanced green fluorescent protein
In the interphase nuclei of cultured cells, chromatin is compacted and organized in higher-order structures through the condensation and decondensation processes. Chromosomes in the interphase nucleus are known to occupy distinct territories. The chromosome territory-interchromatin compartment model premises that the interchromatin compartment is separated f
Springer Netherlands.
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8. Long-range compaction and flexibility of interphase chromatin in budding yeast analyzed by high-resolution imaging techniques
Little is known about how chromatin folds in its native state. Using optimized in situ hybridization and live imaging techniques have determined compaction ratios and fiber flexibility for interphase chromatin in budding yeast. Unlike previous studies, ours examines nonrepetitive chromatin at intervals short enough to be meaningful for yeast chromosomes and
National Academy of Sciences.
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9. Uniparental Chromosome Elimination at Mitosis and Interphase in Wheat and Pearl Millet Crosses Involves Micronucleus Formation, Progressive Heterochromatinization, and DNA Fragmentation
Complete uniparental chromosome elimination occurs in several interspecific hybrids of plants. We studied the mechanisms underlying selective elimination of the paternal chromosomes during the development of wheat (Triticum aestivum) × pearl millet (Pennisetum glaucum) hybrid embryos. All pearl millet chromosomes were eliminated in a random sequence between
American Society of Plant Biologists.
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10. Disappearance of a structural chromatin protein A24 in mitosis: implications for molecular basis of chromatin condensation.
A chromatin protein, A24, a conjugate of histone H2A and evolutionally conserved ubiquitin, was virtually the only structural polypeptide that was present in interphase but missing in mitosis of a Chinese hamster cell line (DON). Because a 10% increase in the H2A/DNA ratio observed in interphase-mitosis transition explained the stoichiometric conversion of A
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11. Nucleosomes in metaphase chromosomes.
Previous studies of the structure of metaphase chromosomes have relied heavily on electron micrography and have revealed the existence of a 10-nm unit fiber that is thought to generate the native 23-30-nm fiber by higher order folding. The structural relationship of these metaphase fibers to the interphase fiber remains obscure. Recent studies on the digesti
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12. REPRESSED AND ACTIVE CHROMATIN ISOLATED FROM INTERPHASE LYMPHOCYTES*