The Suv39h-HP1 histone methylation pathway is dispensable for enrichment and protection of cohesin at centromeres in mammalian cells.

abstract：:The Bacillus subtilis phage phi 29 DNA polymerase, involved in protein-primed viral DNA replication, contains several amino acid consensus sequences common to other eukaryotic-type DNA polymerases. Using site-directed mutagenesis, we have studied the functional significance of a C-terminal conserved region, represente...

journal_title：Chromosoma

authors： Blasco MA,Esteban JA,Méndez J,Blanco L,Salas M

更新日期：1992-01-01 00:00:00

abstract：:This investigation was conducted to determine the relationship between Y chromosome loss and increased micronucleus formation with age. We also investigated the status of kinetochore proteins in the micronuclei. Umbilical cord blood samples were obtained from 18 newborn males, and peripheral blood was obtained from 35...

journal_title：Chromosoma

authors： Nath J,Tucker JD,Hando JC

更新日期：1995-07-01 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：:The W chromosome of the codling moth, Cydia pomonella, like that of most Lepidoptera species, is heterochromatic and forms a female-specific sex chromatin body in somatic cells. We collected chromatin samples by laser microdissection from euchromatin and W-chromatin bodies. DNA from the samples was amplified by degene...

journal_title：Chromosoma

authors： Fuková I,Traut W,Vítková M,Nguyen P,Kubícková S,Marec F

更新日期：2007-04-01 00:00:00

abstract：:Microspore culture stimulates immature pollen grains to develop into plants via tissue culture and is used routinely in many crop species to produce "doubled haploids": homozygous, true-breeding lines. However, microspore culture is also often used on material that does not have stable meiosis, such as interspecific h...

journal_title：Chromosoma

authors： Mwathi MW,Schiessl SV,Batley J,Mason AS

更新日期：2019-12-01 00:00:00

abstract：:Drosophila melanogaster was transformed with an 18 kb fragment of the C3 DNA puff of Rhynchosciara americana, including the C3-22 gene and the origins of replication that direct amplification. Different tissues and developmental stages of five independent transgenic lines were analyzed by quantitative Southern blot hy...

journal_title：Chromosoma

authors： Soares MA,Monesi N,Basso LR Jr,Stocker AJ,Paçó-Larson ML,Lara FJ

更新日期：2003-10-01 00:00:00

abstract：:Saccharomyces cerevisiae cells containing null mutations in the SEP1 gene, which encodes the homologous pairing and strand exchange protein p175SEP1, enter pachytene with a delay. They arrest uniformly at this stage of meiotic prophase, probably revealing a checkpoint in the transition from pachytene to meiosis I. At ...

journal_title：Chromosoma

authors： Bähler J,Hagens G,Holzinger G,Scherthan H,Heyer WD

更新日期：1994-04-01 00:00:00

abstract：:Human neutrophil nuclei typically consist of three of four large heterochromatic lobes joined by thin, DNA-containing filaments. In addition, some lobes exhibit appendages of various sizes and shapes. Classical genetic and cytological studies suggest that some appendages contain specific chromosomes. The studies repor...

journal_title：Chromosoma

authors： Aquiles Sanchez J,Karni RJ,Wangh LJ

更新日期：1997-08-01 00:00:00

abstract：:The divergence of lineages leading to extant squamate reptiles (lizards, snakes, and amphisbaenians) and birds occurred about 275 million years ago. Birds, unlike squamates, have karyotypes that are typified by the presence of a number of very small chromosomes. Hence, a number of chromosome rearrangements might be ex...

journal_title：Chromosoma

authors： Pokorná M,Giovannotti M,Kratochvíl L,Kasai F,Trifonov VA,O'Brien PC,Caputo V,Olmo E,Ferguson-Smith MA,Rens W

更新日期：2011-10-01 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：: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：:MicroRNAs (miRNAs) were first discovered in genetic screens for regulators of developmental timing in the stem-cell-like seam cell lineage in Caenorhabditis elegans. As members of the heterochronic pathway, the lin-4 and let-7 miRNAs are required in the seam cells for the correct progression of stage-specific events a...

journal_title：Chromosoma

authors： Nimmo RA,Slack FJ

更新日期：2009-08-01 00:00:00

abstract：:The large heterochromatic chromosome of Drosophila nasutoides reveals distinctive C- and Q-bands. The regions which are negative in C-banding appear positive in Q-banding. The isochromosomic nature of this chromosome and the locality of the satellite DNAs in this chromosome are discussed with respect to these banding ...

journal_title：Chromosoma

authors： Lee CS,Collins L

更新日期：1977-04-27 00:00:00

abstract：:The heterochromatin of chromosomes 2 and 3 of Drosophila melanogaster contains about 30 essential genes defined by genetic analysis. In the last decade only a few of these genes have been molecularly characterized and found to correspond to protein-coding genes involved in important cellular functions. Moreover, sever...

journal_title：Chromosoma

authors： Corradini N,Rossi F,Vernì F,Dimitri P

更新日期：2003-07-01 00:00:00

abstract：:Mitomycin C-induced sister chromatic exchange and quadriradial formation were studied in chromosomes from Muntiacus muntjac fibroblasts and A9, a transformed mouse cell line. We present the first direct cytological evidence for the induction of true somatic recombination involving homologous chromosomes. Analysis of t...

journal_title：Chromosoma

authors： Huttner KM,Ruddle FH

更新日期：1976-06-30 00:00:00

abstract：:The appearance of RNP droplets associated with specific regions of polytene chromosomes from Chironomus larvae has been studied, systematically by light microscopy using glutarladehyde fixation and lactic acid squashing of the salivary gland. During the fourth larval instar the highest frequency of nuclei which contai...

journal_title：Chromosoma

authors： Stockert JC,Díez JL

更新日期：1979-09-01 00:00:00

abstract：:Simple repeated GATA and GACA sequences which were originally isolated from sex-specific snake satellite DNA have been found subsequently in all eukaryotes studied. The organization of these sequences within the mouse genome was investigated here by using synthetic oligonucleotide probes as a novel tool in comparison ...

journal_title：Chromosoma

authors： Schäfer R,Ali S,Epplen JT

更新日期：1986-01-01 00:00:00

abstract：:Feulgen cytophotometric measurements of neuroblasts in the first and third instar larvae of Drosophila melanogaster reveal the same DNA content for metaphases with chromosomes of different size. The total absorbance of all measured metaphases gives the four-fold value of that of the spermatids. Accordingly there seem ...

journal_title：Chromosoma

authors： van de Flierdt K

更新日期：1975-01-01 00:00:00

abstract：:Fluorescent in situ hybridization with chromosome specific probes was used in conjunction with laser scanning confocal microscopy to assess the three-dimensional distribution of chromosomes in human T-lymphocyte nuclei. Cells in the G1-phase of the cell cycle exhibit a distinctly non-random chromosome organization:cen...

journal_title：Chromosoma

authors： Ferguson M,Ward DC

更新日期：1992-08-01 00:00:00

abstract：:Three new 18S.26S rRNA gene loci were identified in common wheat by sequential N-banding and in situ hybridization (ISH) analysis. Locus Nor-A7 is located at the terminal area of the long arm of 5A in both diploid and polyploid wheats. Locus Nor-B6 is located in N-band 1BL2.5 of the long arm of chromosome 1B in Tritic...

journal_title：Chromosoma

authors： Jiang J,Gill BS

更新日期：1994-06-01 00:00:00

abstract：:The localization of DNA in the condensed interphase chromosomes of Euglena was determined by immunoelectron microscopy. Deposits of gold particles that coincided with the localization of DNA followed threads that corresponded to the chromatin fibers. The threads were 55-80nm in diameter and were assumed to be supersol...

journal_title：Chromosoma

authors： Ueda K,Hayashi-Ishimaru Y

更新日期：1996-01-01 00:00:00

abstract：:The vertebrate pore protein Nup153 plays pivotal roles in nuclear pore function. In addition to being important to pore architecture, Nup153 is a key participant in both import and export. The scope of Nup153 function also extends beyond the canonical view of the pore as a trafficking gateway. During the transition in...

journal_title：Chromosoma

authors： Ball JR,Ullman KS

更新日期：2005-11-01 00:00:00

abstract：:With an improved N-banding technique, the location of nucleolar organizing region was determined in 27 kinds of material including mammals, a marsupial, birds, amphibians, fishes, an insect and plants. In most cases the N-bands were clearly located on certain specific regions of chromosomes, such as the secondary cons...

journal_title：Chromosoma

authors： Funaki K,Matsui S,Sasaki M

更新日期：1975-01-01 00:00:00

abstract：:The sex chromosomes in Sauropsida (reptiles and birds) have evolved independently many times. They show astonishing diversity in morphology ranging from cryptic to highly differentiated sex chromosomes with male (XX/XY) and female heterogamety (ZZ/ZW). Comparing such diverse sex chromosome systems thus provides unpara...

journal_title：Chromosoma

authors： Matsubara K,O'Meally D,Azad B,Georges A,Sarre SD,Graves JA,Matsuda Y,Ezaz T

更新日期：2016-03-01 00:00:00

abstract：:In the XY pachytene spermatocyte, the sex chromosomes do not synapse except for the pseudoautosomal region and become transcriptionally silenced. It has been suggested that the meiotic silencing of unsynapsed chromatin (MSUC) also occurs in oocytes. In the XY sex-reversed female mouse, the sex chromosomes fail to pair...

journal_title：Chromosoma

authors： Taketo T,Naumova AK

更新日期：2013-10-01 00:00:00

abstract：:Chromosomal replication was studied by means of the BrdU-Höchst-Giemsa-technique in three minute T-cell leukemias with special regard to chromosome 15. In all the three leukemic cell lines the normally early replicating band 15 E was undetectable whereas late replication in this region is completely unaltered. Further...

journal_title：Chromosoma

authors： Somssich IE,Spira J,Hameister H,Klein G

更新日期：1982-01-01 00:00:00

abstract：:Facioscapulohumeral muscular dystrophy (FSHD) is caused by the shortening of a copy-number polymorphic array of 3.3 kb repeats (D4Z4) at one allelic 4q35.2 region. How this contraction of a subtelomeric tandem array causes FSHD is unknown but indirect evidence suggests that a short array has a cis effect on a distant ...

journal_title：Chromosoma

authors： Yang F,Shao C,Vedanarayanan V,Ehrlich M

更新日期：2004-05-01 00:00:00

abstract：:The genus Phaseolus L. has been subject of extensive cytogenetic studies due to its global economic importance. It is considered karyotypically stable, with most of its ca. 75 species having 2n = 22 chromosomes, and only three species (Phaseolus leptostachyus, Phaseolus macvaughii, and Phaseolus micranthus), which for...

journal_title：Chromosoma

authors： Fonsêca A,Ferraz ME,Pedrosa-Harand A

更新日期：2016-06-01 00:00:00

abstract：:The binding of methylene blue to DNA and chromatin treated in various ways was examined by equilibrium dialysis. The maximum r value (moles of bound dye/mole of nucleotide) was 1.0 for DNA, 0.6 for unfixed chromatin, and 0.83 for chromatin fixed in methanol-acetic acid. When fixed chromatin was treated with saline-cit...

journal_title：Chromosoma

authors： Comings DE,Avelino E

更新日期：1975-08-11 00:00:00

abstract：:A clone of highly repetitive DNA, designated C5, was isolated from DNA of female Chinese muntjac cells. The nucleotide sequence of this clone is 80%-85% homologous to that of the satellite IA clone and other highly repetitive DNA clones previously obtained from the Indian muntjac. Using C5 as a probe for in situ hybri...

journal_title：Chromosoma

authors： Lin CC,Sasi R,Fan YS,Chen ZQ

更新日期：1991-10-01 00:00:00