Results 51 to 60 of about 2,294,281 (319)

Competition of Parental Genomes in Plant Hybrids

Frontiers in Plant Science, 2020
Interspecific hybridization represents one of the main mechanisms of plant speciation. Merging of two genomes from different subspecies, species, or even genera is frequently accompanied by whole-genome duplication (WGD).
Marek Glombik, Václav Bačovský, Roman Hobza, Roman Hobza, David Kopecký   +4 more
doaj   +1 more source

Synaptonemal complex components persist at centromeres and are required for homologous centromere pairing in mouse spermatocytes. [PDF]

PLoS Genetics, 2012
Recent studies in simple model organisms have shown that centromere pairing is important for ensuring high-fidelity meiotic chromosome segregation. However, this process and the mechanisms regulating it in higher eukaryotes are unknown.
C Gaston Bisig, Michel F Guiraldelli, Anna Kouznetsova, Harry Scherthan, Christer Höög, Dean S Dawson, Roberto J Pezza   +6 more
doaj   +1 more source

Meiotic Nuclear Oscillations Are Necessary to Avoid Excessive Chromosome Associations

Cell Reports, 2016
Pairing of homologous chromosomes is a crucial step in meiosis, which in fission yeast depends on nuclear oscillations. However, how nuclear oscillations help pairing is unknown.
Mariola R. Chacón, Petrina Delivani, Iva M. Tolić   +2 more
doaj   +1 more source

Identification of genes that promote or antagonize somatic homolog pairing using a high-throughput FISH-based screen.

PLoS Genetics, 2012
The pairing of homologous chromosomes is a fundamental feature of the meiotic cell. In addition, a number of species exhibit homolog pairing in nonmeiotic, somatic cells as well, with evidence for its impact on both gene regulation and double-strand ...
Eric F Joyce, Benjamin R Williams, Tiao Xie, C-Ting Wu   +3 more
doaj   +1 more source

Exploiting Homology Information in Nontemplate Based Prediction of Protein Structures [PDF]

, 2015
In this paper we describe a novel strategy for exploring the conformational space of proteins and show that this leads to better models for proteins the structure of which is not amenable to template based methods. Our strategy is based on the assumption
Alfredo Iacoangeli, Anna Tramontano, Chothia C., Paolo Marcatili   +3 more
core   +2 more sources

Homologous pairing in stretched supercoiled DNA

Proceedings of the National Academy of Sciences, 1998
By using elastic measurements on single DNA molecules, we show that stretching a negatively supercoiled DNA activates homologous pairing in physiological conditions. These experiments indicate that a stretched unwound DNA locally denatures to alleviate the force-driven increase in torsional stress.
T R, Strick, V, Croquette, D, Bensimon
openaire   +3 more sources

Crystal structure of Hop2-Mnd1 and mechanistic insights into its role in meiotic recombination [PDF]

, 2015
In meiotic DNA recombination, the Hop2-Mnd1 complex promotes Dmc1-mediated single-stranded DNA (ssDNA) invasion into homologous chromosomes to form a synaptic complex by a yet-unclear mechanism.
Alexandra-Styliani Kalantzi, Bergerat, Bishop, Brown, Brunger, Bugreev, Byung-Ha Oh, Case, Chan, Chen, Chi, Cho, Christopher P. Toseland, Cloud, de Massy, De Vlaminck, de Vries, Emsley, Enomoto, Ferrari, Garcia, Haruta, Hayase, Ho-Chul Shin, Holm, Hyun-Ah Kang, Hyun-Min Kim, Keeney, Keeney, Kokabu, Kuwabara, Lange, Leu, Lu, Lu, Lu, Matteo Dal Peraro, Moktan, Morrison, Neale, Okorokov, Otwinowski, Pettersen, Petukhova, Petukhova, Pezza, Pezza, Phillips, Ploquin, Qiao, Rabitsch, Roeder, Rothenberg, Say, Schwacha, Sheridan, Sheridan, Soding, Stephan Gruber, Terwilliger, Tsai, Tsubouchi, Tsubouchi, Uanschou, van der Heijden, Wright, Zhao   +66 more
core   +3 more sources

Analysis of chromosome positions in the interphase nucleus of Chinese hamster cells by laser-UV-microirradiation experiments [PDF]

, 1982
Unsynchronized cells of an essentially diploid strain of female Chinese hamster cells derived from lung tissue (CHL) were laser-UV-microirradiated (=257 nm) in the nucleus either at its central part or at its periphery.
B Dutrillaux, BA Kihlman, C Cremer, C Cremer, C Cremer, C Cremer, C Wollenberg, C Zorn, C Zorn, C. Cremer, DE Barton, DE Comings, DE Comings, E Therman, F Vogel, FE Fosse Del, H Kato, H. Baumann, HD Hager, JW Gray, K Church, K Nilsson, L Avivi, L Hens, L Hens, L. Hens, LL Deaven, M Ray, M Schmid, M. Kirsch-Volders, S Brenner, T Caspersson, T Cremer, T Cremer, T. Cremer, T. Schneider, Th Boveri, W Sauerbier, Y Moroi   +38 more
core   +1 more source

Phenol-treatment and a homologous pairing-assay

Nucleic Acids Research, 1992
Homologous pairing is a key step in homologous genetic recombination. In the early stage of trials for the identification of homologous pairing-promoting proteins from a fission yeast, Schizosaccharomyces pombe, we treated DNA products with phenol in the presence of a salt for the removal of tightly bound proteins from DNA before the assay, but we ...
N, Arai, K, Kawasaki, M, Iwabuchi, T, Shibata   +3 more
openaire   +3 more sources

Agent-based modeling of nuclear chromosome ensembles identifies determinants of homolog pairing during meiosis.

PLoS Computational Biology
During meiosis, pairing of homologous chromosomes (homologs) ensures the formation of haploid gametes from diploid precursor cells, a prerequisite for sexual reproduction.
Ariana Chriss, G Valentin Börner, Shawn D Ryan   +2 more
doaj   +1 more source