Distribution of interstitial telomere-like repeats and their adjacent sequences in a dioecious plant, Silene latifolia.

abstract：:Four different inversion heterozygotes of maize were examined for the occurrence of synaptic adjustment. Three substages of pachytene were identified in synaptonemal complex (SC) spreads using side-by-side comparisons of chromosome squashes with two-dimensional spreads of SCs. In SC spreads, inversion loop frequency d...

journal_title：Chromosoma

authors： Anderson LK,Stack SM,Sherman JD

更新日期：1988-01-01 00:00:00

abstract：:We determined the structure of the Schizosaccharomyces pombe centromere cen3 using direct genomic mapping and cosmid walking. The repetitive region of cen3 is approximately 110 kb, much longer than that of the previously determined cen1 and cen2 regions. The approximately 30 kb long left and approximately 60 kb right ...

journal_title：Chromosoma

authors： Murakami S,Matsumoto T,Niwa O,Yanagida M

更新日期：1991-12-01 00:00:00

abstract：:Lack of crossing-over in meiosis can trigger an apoptotic response at metaphase I by the spindle assembly checkpoint (SAC). In contrast to females, segregation of sex chromosomes in males poses a particular challenge as recombination and chiasma formation is restricted to the pseudoautosomal region, the small region o...

journal_title：Chromosoma

authors： Faisal I,Kauppi L

更新日期：2016-06-01 00:00:00

abstract：:Antitubulin antibody was used as an immunofluorescent and immunoelectron microscopic probe to localize tubulin in components of the mitotic apparatus of rat kangaroo (strain PtK1) cells in vitro. In addition to the detection of tubulin in the spindle microtubules and centrioles, other structures were found to display ...

journal_title：Chromosoma

authors： Pepper DA,Brinkley BR

更新日期：1977-04-19 00:00:00

abstract：:We sought for cloned sequences of middle repetitive (MR) complexity that mark obligatory heterochromatic regions. Total genome probes were employed in a differential screening procedure to recover X-specific, Y-specific and autosomal specific heterochromatic sequences. X-and Y-linked sequences were recovered in the sa...

journal_title：Chromosoma

authors： Lifschytz E,Hareven D

更新日期：1982-01-01 00:00:00

abstract：:One of the prominent cell cycle-related modifications of histone proteins whose function remains unresolved is the phosphorylation of linker histone H1. In this work we have used indirect immunofluorescence on human cells with antibodies that are specific for phosphorylated histone H1 to examine the cellular distribut...

journal_title：Chromosoma

authors： Boggs BA,Allis CD,Chinault AC

更新日期：2000-03-01 00:00:00

abstract：:Ribosomal DNA nontranscribed spacers in Drosophila virilis DNA have been examined in some detail by restriction site analysis of cloned segments of rDNA, nucleic acid hybridizations involving unfractionated rDNA, and base composition estimates. The overall G + C content of the spacer is 27--28%; this compares with 39%...

journal_title：Chromosoma

authors： Rae PM,Barnett T,Murtif VL

更新日期：1981-01-01 00:00:00

abstract：:Neuroblast chromosomes of 16 Drosophila melanogaster laboratory stocks (15 wild type and 1 carrying the mutant vermillion) were carefully analyzed for Q-banding patterns and morphological characteristics, in all the mitotic phases. Two forms of intraspecific heterochromatin variations, involving three types of chromos...

journal_title：Chromosoma

authors： Halfer C

更新日期：1981-01-01 00:00:00

abstract：:Polo-like kinase 1 (Plk1) is an essential mitotic regulator and undergoes periodic phosphorylation on threonine 210, a conserved residue in the kinase's activation loop. While phosphate-mimicking alterations of T210 stimulate Plk1's kinase activity in vitro, their effects on cell cycle regulation in vivo remain contro...

journal_title：Chromosoma

authors： Paschal CR,Maciejowski J,Jallepalli PV

更新日期：2012-12-01 00:00:00

abstract：:From a "shotgun" collection of DNA fragments, isolated from Drosophila melanogaster, we selected sequences that function as autonomously replicating sequences (ARS) in the yeast Saccharomyces cerevisiae. To investigate the replicative potential of such sequences in Drosophila, five of these ARS elements and also the A...

journal_title：Chromosoma

authors： Roth GE

更新日期：1991-05-01 00:00:00

abstract：:The polypurine/polypyrimidine (PuPy) tracts present in the human genome are known to be scattered among and within chromosomes. In PuPy tract sequences, triplex formation occurs readily under physiological conditions, leaving single-stranded DNAs capable of hybridization with complementary single-stranded DNAs and RNA...

journal_title：Chromosoma

authors： Ohno M,Fukagawa T,Lee JS,Ikemura T

更新日期：2002-09-01 00:00:00

abstract：:Ring chromosomes are of basic interest to the geneticist and cell biologist who study their behavior in meiotic and mitotic divisions. In addition, the mitotic instability associated with some ring-X chromosomes has proven useful in Drosophila as a means to produce gynandromorphs for developmental studies. We describe...

journal_title：Chromosoma

authors： Golic MM,Golic KG

更新日期：2011-04-01 00:00:00

abstract：:Internally consistent G-, Q- and R-banded karyotypes and idiograms for sheep chromosomes at the 422-band level of resolution are presented. These were derived by sequential Q- to G-staining, and sequential Q- to R-staining of prometaphase spreads prepared from sheep with normal and Robertsonian chromosomes. The fused ...

journal_title：Chromosoma

authors： Ansari HA,Maher DW,Pearce PD,Broad TE

更新日期：1996-07-01 00:00:00

abstract：:Ki-67 protein has been widely used as a proliferation marker for human tumor cells for decades. In recent studies, multiple molecular functions of this large protein have become better understood. Ki-67 has roles in both interphase and mitotic cells, and its cellular distribution dramatically changes during cell cycle...

journal_title：Chromosoma

authors： Sun X,Kaufman PD

更新日期：2018-06-01 00:00:00

abstract：:We have studied the diameter of chromatin fibres embedded in epoxy resins for three different materials: mouse thymus, chicken erythrocytes and sea cucumber spermatozoa. We confirm that the diameter of chromatin fibres increases with linker length, both values being influenced by the protein composition of chromatin. ...

journal_title：Chromosoma

authors： Alegre C,Subirana JA

更新日期：1989-06-01 00:00:00

abstract：:Heterochromatin in eukaryotic interphase cells frequently localizes to the nucleolar periphery (nucleolus-associated domains (NADs)) and the nuclear lamina (lamina-associated domains (LADs)). Gene expression in somatic cell NADs is generally low, but NADs have not been characterized in mammalian stem cells. Here, we g...

journal_title：Chromosoma

authors： Bizhanova A,Yan A,Yu J,Zhu LJ,Kaufman PD

更新日期：2020-06-01 00:00:00

abstract：:It is reported that chromatin can be prepared from highly purified polytene nuclei from the salivary glands of third instar larvae of Drosophila hydei; such chromatin differs from that of diploid nuclei mainly by deficiencies in certain nonhistone chromosomal proteins. It is suggested that these proteins are important...

journal_title：Chromosoma

authors： Elgin SC,Boyd JB

更新日期：1975-01-01 00:00:00

abstract：:We show that methylated lysine 9 of histone H3 (Me9H3) is a marker of heterochromatin in divergent animal species. It localises to both constitutive and facultative heterochromatin and replicates late in S-phase of the cell cycle. Significantly, Me9H3 is enriched in the inactive mammalian X chromosome (Xi) in female c...

journal_title：Chromosoma

authors： Cowell IG,Aucott R,Mahadevaiah SK,Burgoyne PS,Huskisson N,Bongiorni S,Prantera G,Fanti L,Pimpinelli S,Wu R,Gilbert DM,Shi W,Fundele R,Morrison H,Jeppesen P,Singh PB

更新日期：2002-03-01 00:00:00

abstract：:We have characterized two post-translational histone modifications in Caenorhabditis elegans on a genomic scale. Micrococcal nuclease digestion and immunoprecipitation were used to obtain distinct populations of single nucleosome cores, which were analyzed using massively parallel DNA sequencing to obtain positional a...

journal_title：Chromosoma

authors： Gu SG,Fire A

更新日期：2010-02-01 00:00:00

abstract：:The ability to reproduce is a major trait of living organisms. This ability is carried out by specialized reproductive cells-gametes. In mammals, gametes develop through a unique developmental pathway. Extensive changes in the epigenome of gametes occur during embryonic development. With birth, gametes continue to mat...

journal_title：Chromosoma

authors： Wasserzug-Pash P,Klutstein M

更新日期：2019-09-01 00:00:00

abstract：:The kinetochore binds an evolutionarily conserved set of checkpoint proteins that function to monitor whether chromosomes have aligned properly at the spindle equator. Human cells contain two related protein kinases, hBUB1 and hBUBR1, that appear to have evolved from a single ancestral BUB1 gene. We generated hBUB1- a...

journal_title：Chromosoma

authors： Jablonski SA,Chan GK,Cooke CA,Earnshaw WC,Yen TJ

更新日期：1998-12-01 00:00:00

abstract：:The members of the serine-arginine (SR) family of proteins play multiple roles in posttranscriptional gene expression. Initially considered as essential splicing factors confined to the nucleus and regulating constitutive and alternative splicing, SR proteins are now known to shuttle between the nucleus and the cytopl...

journal_title：Chromosoma

authors： Singh OP,Visa N,Wieslander L,Daneholt B

更新日期：2006-12-01 00:00:00

abstract：:In Drosophila gibberosa, differences between midgut and salivary gland chromosomes fall into two categories: tissue-specific band modulations which persist throughout the 90 h developmental period that we studied and tissue-specific puffs. Puffs that are common to both tissues tend to appear earlier in the midgut. Som...

journal_title：Chromosoma

authors： Roberts PA

更新日期：1988-11-01 00:00:00

abstract：:Spermatogenesis in the F1 hybrid (2n=24=12 female + 12 male) between the closely related newt species T. cristatus carnifex and T. marmoratus was apparently normal up to pachytene. Many unpaired chromosomes were present at diplotene and a typical diakinesis was lacking. Primary spermatocytes at meta- and meta-anaphase...

journal_title：Chromosoma

authors： Mancino G,Ragghianti M,Bucci-Innocenti S

更新日期：1979-08-10 00:00:00

abstract：:The study of RNA pol II-mediated transcription regulation has been dominated by molecular biological approaches. Although these methods continue to provide important insights, other approaches are required to insure against an oversimplified view of gene expression. Improvements in EM methods and the development of th...

journal_title：Chromosoma

authors： Hendzel MJ,Bazett-Jones DP

更新日期：1995-02-01 00:00:00

abstract：:In most multicellular eukaryotes, synapsis [synaptonemal complex (SC) formation] between pairs of homologous chromosomes during prophase I of meiosis is closely linked with crossing over. Asynaptic mutants in plants have reduced synapsis and increased univalent frequency, often resulting in genetically unbalanced game...

journal_title：Chromosoma

authors： Qiao H,Offenberg HH,Anderson LK

更新日期：2012-06-01 00:00:00

abstract：:DNA topology in histone- and protamine-depleted nuclei (nucleoids) from somatic cells, sperm, and spermatogenic cells was studied to determine if the superhelical configuration of DNA looped domains is altered during spermatogenesis. The expansion and contraction of nucleoid DNA was measured with a fluorescence micros...

journal_title：Chromosoma

authors： Risley MS,Einheber S,Bumcrot DA

更新日期：1986-01-01 00:00:00

abstract：:The best-studied Drosophila insulator complex consists of two BTB-containing proteins, the Mod(mdg4)-67.2 isoform and CP190, which are recruited cooperatively to chromatin through interactions with the DNA-binding architectural protein Su(Hw). While Mod(mdg4)-67.2 interacts only with Su(Hw), CP190 interacts with many ...

journal_title：Chromosoma

authors： Melnikova L,Kostyuchenko M,Molodina V,Parshikov A,Georgiev P,Golovnin A

更新日期：2018-03-01 00:00:00

abstract：:Quinacrine (Q-band) and centromeric heterochromatin (C-band) patterns of metaphase chromosomes of two subspecies of Mus musculus were compared. M.m. musculus (the laboratory mouse) and M.m. molossinus (a subspecies from Southeast Asia) had similar Q-band patterns along the length of the chromosomes, but differences we...

journal_title：Chromosoma

authors： Dev VG,Miller DA,Tantravahi R,Schreck RR,Roderick TH,Erlanger BF,Miller OJ

更新日期：1975-12-29 00:00:00

abstract：:The genus Caledia acontains two species. C. species nova 1 is restricted to the Oriomo Plateau of S. W. Papua and has a complement of twelve telocentric chromosomes. The second species C. captiva has a much wider distribution pattern--from S.W. Papua in the North, down the entire Eastern seaboard of Australia to South...

journal_title：Chromosoma

authors： Shaw DD

更新日期：1976-02-23 00:00:00