Results 1 to 10 of about 26,734 (323)

A surge of late-occurring meiotic double-strand breaks rescues synapsis abnormalities in spermatocytes of mice with hypomorphic expression of SPO11 [PDF]

open access: hybridChromosoma, 2015
Meiosis is the biological process that, after a cycle of DNA replication, halves the cellular chromosome complement, leading to the formation of haploid gametes.
Barchi, Marco   +9 more
core   +12 more sources

The essential elements for the noncovalent association of two DNA ends during NHEJ synapsis

open access: yesNature Communications, 2019
During a process termed synapsis, the two DNA ends at a double-strand break (DSB) are brought together into physical proximity. Here, the authors use a single-molecule FRET approach with purified proteins to investigate the mechanism of synapsis in DSB ...
Bailin Zhao   +2 more
exaly   +3 more sources

Mad1's ability to interact with Mad2 is essential to regulate and monitor meiotic synapsis in C. elegans.

open access: goldPLoS Genetics, 2021
Meiotic homolog synapsis is essential to ensure accurate segregation of chromosomes during meiosis. In C. elegans, proper regulation of synapsis and a checkpoint that monitors synapsis relies on the spindle checkpoint components, Mad1 and Mad2, and ...
Alice Devigne, Needhi Bhalla
doaj   +2 more sources

ZIP4 is required for normal progression of synapsis and for over 95% of crossovers in wheat meiosis

open access: yesFrontiers in Plant Science, 2023
Tetraploid (AABB) and hexaploid (AABBDD) wheat have multiple sets of similar chromosomes, with successful meiosis and preservation of fertility relying on synapsis and crossover (CO) formation only taking place between homologous chromosomes.
Tracie N. Draeger   +6 more
doaj   +2 more sources

Epigenetic Dysregulation of Mammalian Male Meiosis Caused by Interference of Recombination and Synapsis

open access: yesCells, 2021
Meiosis involves a series of specific chromosome events, namely homologous synapsis, recombination, and segregation. Disruption of either recombination or synapsis in mammals results in the interruption of meiosis progression during the first meiotic ...
Roberto de la Fuente   +10 more
doaj   +2 more sources

All paired up with no place to go: pairing, synapsis, and DSB formation in a balancer heterozygote. [PDF]

open access: goldPLoS Genetics, 2005
The multiply inverted X chromosome balancer FM7 strongly suppresses, or eliminates, the occurrence of crossing over when heterozygous with a normal sequence homolog.
Wei J Gong, Kim S McKim, R Scott Hawley
doaj   +3 more sources

Meiotic chromosome synapsis depends on multivalent SYCE1-SIX6OS1 interactions that are disrupted in cases of human infertility

open access: yesScience Advances, 2020
Synaptonemal complex assembly depends on multivalent protein interactions between SYCE1 and SIX6OS1. Meiotic reductional division depends on the synaptonemal complex (SC), a supramolecular protein assembly that mediates homologous chromosomes synapsis ...
Fernando Sánchez-Sáez   +2 more
exaly   +2 more sources

Structural maturation of SYCP1-mediated meiotic chromosome synapsis by SYCE3

open access: greenNature Structural & Molecular Biology, 2023
SYCP1 structures are conformationally remodeled by molecular adapter SYCE3 to assemble into the supramolecular synaptonemal complex that mediates chromosome synapsis and facilitates crossover formation in meiosis.
James H. Crichton   +7 more
openalex   +3 more sources

Dual effect of the wheat Ph1 locus on chromosome synapsis and crossover

open access: yesChromosoma, 2017
Allopolyploids must possess a mechanism for facilitating synapsis and crossover (CO) between homologues, in preference to homoeologues (related chromosomes), to ensure successful meiosis.
María-Dolores Rey   +2 more
exaly   +3 more sources

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