- Home
- Search Results
- Page 1 of 1
Search for: All records
-
Total Resources1
- Resource Type
-
0000000001000000
- More
- Availability
-
01
- Author / Contributor
- Filter by Author / Creator
-
-
Das, Aasthika (1)
-
Koury, Emily (1)
-
Oberlitner, Joseph (1)
-
Silva, Nicola (1)
-
Smolikove, Sarit (1)
-
Tinman, Maggie (1)
-
#Tyler Phillips, Kenneth E. (0)
-
#Willis, Ciara (0)
-
& Abreu-Ramos, E. D. (0)
-
& Abramson, C. I. (0)
-
& Abreu-Ramos, E. D. (0)
-
& Adams, S.G. (0)
-
& Ahmed, K. (0)
-
& Ahmed, Khadija. (0)
-
& Aina, D.K. Jr. (0)
-
& Akcil-Okan, O. (0)
-
& Akuom, D. (0)
-
& Aleven, V. (0)
-
& Andrews-Larson, C. (0)
-
& Archibald, J. (0)
-
- Filter by Editor
-
-
Engebrecht, J (1)
-
& Spizer, S. M. (0)
-
& . Spizer, S. (0)
-
& Ahn, J. (0)
-
& Bateiha, S. (0)
-
& Bosch, N. (0)
-
& Brennan K. (0)
-
& Brennan, K. (0)
-
& Chen, B. (0)
-
& Chen, Bodong (0)
-
& Drown, S. (0)
-
& Ferretti, F. (0)
-
& Higgins, A. (0)
-
& J. Peters (0)
-
& Kali, Y. (0)
-
& Ruiz-Arias, P.M. (0)
-
& S. Spitzer (0)
-
& Sahin. I. (0)
-
& Spitzer, S. (0)
-
& Spitzer, S.M. (0)
-
-
Have feedback or suggestions for a way to improve these results?
!
Note: When clicking on a Digital Object Identifier (DOI) number, you will be taken to an external site maintained by the publisher.
Some full text articles may not yet be available without a charge during the embargo (administrative interval).
What is a DOI Number?
Some links on this page may take you to non-federal websites. Their policies may differ from this site.
-
Engebrecht, J (Ed.)Abstract DNA double-strand breaks (DSBs) are formed in meiosis, so their repair in the homologous recombination (HR) pathway will lead to crossover formation, which is essential for successful chromosome segregation. HR contains 2 subpathways: synthesis-dependent strand annealing (SDSA) that creates noncrossover and double Holliday junction (dHJ) that generates crossovers. RAD-51 is a protein essential to the formation of all products of HR, as it assembles on the processed DSB, allowing the invasion of the single-stranded DNA into a region of homology. RAD-51 is removed by RAD-54.L after invasion to allow for repair to occur. Here, we investigate a separation of function allele of rad-51, rad-51::FLAG, as compared to 2 other RAD-51 alleles: rad-51::degron and GFP::rad-51. rad-51::FLAG displays slowed repair kinetics, resulting in an accumulation of RAD-51 foci. rad-51::FLAG worms also activate the DSB checkpoint, but to a less extant than that of rad-51 null mutants. In a proximity ligation assay, RAD-54.L and RAD-51 show enriched colocalization in rad-51::FLAG germlines (but not in rad-51::degron), consistent with stalling at the strand invasion step in HR. The defects in RAD-51 disassembly in rad-51::FLAG mutants lead to formation of chromosomal fragments, similar in their magnitude to ones observed in rad-51 or rad-54.L null mutants. However, rad-51::FLAG mutants (unlike a rad-51 null, GFP::rad-51 or rad-54.L null mutants) displayed no defects in the formation of crossover-designated sites (via GFP::COSA-1 localization). Given that rad-51::FLAG worms show checkpoint activation and chromosomal fragments, these results suggest that crossover repair concludes normally, while the noncrossover pathway is perturbed. This is strikingly different from rad-51::degron and GFP::rad-51 strains, which are proficient or deficient in both pathways, respectively. These results suggest that noncrossovers vs crossovers have distinct recombination intermediates and diverge prior to RAD-51 disassembly.more » « lessFree, publicly-accessible full text available April 7, 2026
An official website of the United States government
