Results 41 to 50 of about 191,348 (320)

Recombination and chromosome segregation

open access: yesPhilosophical Transactions of the Royal Society of London. Series B: Biological Sciences, 2004
The duplication of DNA and faithful segregation of newly replicated chromosomes at cell division is frequently dependent on recombinational processes. The rebuilding of broken or stalled replication forks is universally dependent on homologous recombination proteins.
Sherratt, D   +6 more
openaire   +3 more sources

A simple biophysical model emulates budding yeast chromosome condensation

open access: yeseLife, 2015
Mitotic chromosomes were one of the first cell biological structures to be described, yet their molecular architecture remains poorly understood. We have devised a simple biophysical model of a 300 kb-long nucleosome chain, the size of a budding yeast ...
Tammy MK Cheng   +8 more
doaj   +1 more source

Segregation but Not Replication of the Pseudomonas aeruginosa Chromosome Terminates at Dif

open access: yesmBio, 2018
Coordination between chromosome replication and segregation is essential for equal partitioning of genetic material between daughter cells. In bacteria, this is achieved through the proximity of the origin of replication, oriC, and the chromosome ...
Bijit K. Bhowmik   +3 more
doaj   +1 more source

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

open access: yes, 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   +3 more sources

Kinetochore component function in C. elegans oocytes revealed by 4D tracking of holocentric chromosomes

open access: yesNature Communications, 2023
During cell division, chromosome congression to the spindle center, their orientation along the spindle long axis and alignment at the metaphase plate depend on interactions between spindle microtubules and kinetochores, and are pre-requisite for ...
Laras Pitayu-Nugroho   +7 more
doaj   +1 more source

Autism and mild epilepsy associated with a de novo missense pathogenic variant in the GTPase effector domain of DNM1

open access: yesAmerican Journal of Medical Genetics Part C: Seminars in Medical Genetics, EarlyView., 2023
Abstract Dynamin 1 is a GTPase protein involved in synaptic vesicle fission, which facilitates the exocytosis of neurotransmitters necessary for normal signaling. Pathogenic variants in the DNM1 gene are associated with intractable epilepsy, often manifested as infantile spasms at onset, developmental delay, and a movement disorder, and are located in ...
Davide Mei   +4 more
wiley   +1 more source

Spo0J and SMC are required for normal chromosome segregation in Staphylococcus aureus

open access: yesMicrobiologyOpen, 2020
Bacterial chromosome segregation is an essential cellular process that is particularly elusive in spherical bacteria such as the opportunistic human pathogen Staphylococcus aureus.
Helena Chan   +2 more
doaj   +1 more source

Super-Resolution Mapping of Neuronal Circuitry With an Index-Optimized Clearing Agent

open access: yesCell Reports, 2016
Super-resolution imaging deep inside tissues has been challenging, as it is extremely sensitive to light scattering and spherical aberrations. Here, we report an optimized optical clearing agent for high-resolution fluorescence imaging (SeeDB2).
Meng-Tsen Ke   +7 more
doaj   +1 more source

A Cohesin-Based Partitioning Mechanism Revealed upon Transcriptional Inactivation of Centromere. [PDF]

open access: yesPLoS Genetics, 2016
Transcriptional inactivation of the budding yeast centromere has been a widely used tool in studies of chromosome segregation and aneuploidy. In haploid cells when an essential chromosome contains a single conditionally inactivated centromere (GAL-CEN ...
Michael Tsabar   +8 more
doaj   +1 more source

The dynamics of signal amplification by macromolecular assemblies for the control of chromosome segregation [PDF]

open access: yes, 2016
The control of chromosome segregation relies on the spindle assembly checkpoint (SAC), a complex regulatory system that ensures the high fidelity of chromosome segregation in higher organisms by delaying the onset of anaphase until each chromosome is ...
Bolanos-Garcia, Victor M., Lee, Semin
core   +1 more source

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