Results 51 to 60 of about 74,508 (147)

Temperature dependence of the nuclear symmetry energy [PDF]

, 1994
We have studied the properties of A=54 and A=64 isobars at temperatures T \leq 2 MeV via Monte Carlo shell model calculations with two different residual interactions. In accord with empirical indications, we find that the symmetry energy coefficient, b_{
Alhassid, Auerbach, Bethe, Bohr, Brown, Caurier, Cowan, D.J. Dean, Donati, K. Langanke, Lang, P.B. Radha, S.E. Koonin   +12 more
core   +3 more sources

Chromosome movements promoted by the mitochondrial protein SPD-3 are required for homology search during Caenorhabditis elegans meiosis.

PLoS Genetics, 2013
Pairing of homologous chromosomes during early meiosis is essential to prevent the formation of aneuploid gametes. Chromosome pairing includes a step of homology search followed by the stabilization of homolog interactions by the synaptonemal complex (SC)
Leticia Labrador, Consuelo Barroso, James Lightfoot, Thomas Müller-Reichert, Stephane Flibotte, Jon Taylor, Donald G Moerman, Anne M Villeneuve, Enrique Martinez-Perez   +8 more
doaj   +1 more source

Entamoeba histolytica Dmc1 Catalyzes Homologous DNA Pairing and Strand Exchange That Is Stimulated by Calcium and Hop2-Mnd1. [PDF]

PLoS ONE, 2015
Meiosis depends on homologous recombination (HR) in most sexually reproducing organisms. Efficient meiotic HR requires the activity of the meiosis-specific recombinase, Dmc1.
Andrew A Kelso, Amanda F Say, Deepti Sharma, LeAnna L Ledford, Audrey Turchick, Christopher A Saski, Ada V King, Christopher C Attaway, Lesly A Temesvari, Michael G Sehorn   +9 more
doaj   +1 more source

Cohomology rings, Rochlin function, linking pairing and the Goussarov--Habiro theory of three--manifolds

, 2003
We prove that two closed oriented 3-manifolds have isomorphic quintuplets (homology, space of spin structures, linking pairing, cohomology rings, Rochlin function) if, and only if, they belong to the same class of a certain surgery equivalence relation ...
Gwénaël Massuyeau, Johnson, Lannes, Matveev, Milnor, Ohtsuki, Turaev   +6 more
core   +3 more sources

RNA secondary structure prediction from multi-aligned sequences [PDF]

, 2013
It has been well accepted that the RNA secondary structures of most functional non-coding RNAs (ncRNAs) are closely related to their functions and are conserved during evolution.
A Balik, A Pauli, A Wilm, A Wilm, AC Penn, AR Gruber, AS Richter, B Knudsen, B Knudsen, C Witwer, CB Do, D Jager, D Sankoff, D Wei, DH Mathews, DH Mathews, E Bindewald, E Freyhult, E Rivas, EJ Meer, H Kiryu, H Yonemoto, IA Qureshi, IL Hofacker, IL Hofacker, IV Novikova, J Ruan, J Spirollari, JG Underwood, JM Watts, JR Proctor, JS McCaskill, JT Low, K Katoh, K Sato, K Sato, K Sato, KM Wong, LE Carvalho, M Andronescu, M Andronescu, M Esteller, M Hamada, M Hamada, M Hamada, M Hamada, M Hamada, M Hamada, M Hamada, M Hamada, M Kertesz, ME Nebel, MS Andronescu, P Ge, PP Gardner, PS Pang, R Luck, RD Dowell, RJ Klein, S Washietl, S Washietl, S Washietl, S Washietl, SE Seemann, SE Seemann, SH Bernhart, SM Sahraeian, SW Burge, T Puton, T Xia, Y Kato, Z Sukosd   +71 more
core   +1 more source

Telomeres cluster de novo before the initiation of synapsis: a three-dimensional spatial analysis of telomere positions before and during meiotic prophase. [PDF]

, 1997
We have analyzed the progressive changes in the spatial distribution of telomeres during meiosis using three-dimensional, high resolution fluorescence microscopy.
Agard, DA, Bass, HW, Cande, WZ, Marshall, WF, Sedat, JW   +4 more
core  

Probing Rad51-DNA interactions by changing DNA twist [PDF]

, 2017
In eukaryotes, Rad51 protein is responsible for the recombinational repair of double-strand DNA breaks. Rad51 monomers cooperatively assemble on exonuclease-processed broken ends forming helical nucleo-protein filaments that can pair with homologous ...
Atwell, Scott, Cappello, Giovanni, Disseau, Ludovic, Renodon-Cornière, Axelle, Stasiak, Alicja Z., Stasiak, Andrzej, Takahashi, Masayuki, Viovy, Jean-Louis   +7 more
core  

A Computational Approach to Estimating Nondisjunction Frequency in Saccharomyces cerevisiae. [PDF]

, 2016
Errors segregating homologous chromosomes during meiosis result in aneuploid gametes and are the largest contributing factor to birth defects and spontaneous abortions in humans.
Burgess, Sean M, Chu, Daniel B
core   +3 more sources

Modeling meiotic chromosomes indicates a size dependent contribution of telomere clustering and chromosome rigidity to homologue juxtaposition.

PLoS Computational Biology, 2012
Meiosis is the cell division that halves the genetic component of diploid cells to form gametes or spores. To achieve this, meiotic cells undergo a radical spatial reorganisation of chromosomes.
Christopher A Penfold, Paul E Brown, Neil D Lawrence, Alastair S H Goldman   +3 more
doaj   +1 more source

A separation-of-function ZIP4 wheat mutant allows crossover between related chromosomes and is meiotically stable

Scientific Reports, 2021
Many species, including most flowering plants, are polyploid, possessing multiple genomes. During polyploidisation, fertility is preserved via the evolution of mechanisms to control the behaviour of these multiple genomes during meiosis.
Azahara C. Martín, Abdul Kader Alabdullah, Graham Moore   +2 more
doaj   +1 more source