Find research datasets worth reusing
Search datasets from major research repositories and use ShareScore to quickly assess how well each record supports discovery, access, and reuse.
2,180
datasets available to search
ShareScore release 0.9.0
Dataset results
2,180 results for “Recombination”
A Study of Extended Use of Recombinant Human Parathyroid Hormone (rhPTH(1-84)) in Hypoparathyroidism
ClinicalTrials.gov study NCT02910466. IPD Sharing: YES. Countries: 1. Publications: 4.
Hi-reComb: Constructing recombination maps from bulk gamete Hi-C sequencing
Open the record for dataset details and reuse information.
Epistatic selection on a selfish Segregation Distorter supergene: drive, recombination, and genetic load
Open the record for dataset details and reuse information.
Data from: Recombination as an enforcement mechanism of prosocial behavior in cooperating bacteria
Open the record for dataset details and reuse information.
Sexual recombination and temporal gene flow maintain host resistance and genetic diversity
Open the record for dataset details and reuse information.
The role of recombination dynamics in shaping signatures of direct and indirect selection across the Ficedula flycatcher genome
Open the record for dataset details and reuse information.
Recombination data for the repeat-based holocentromere-harbouring genome of R. breviuscula
Open the record for dataset details and reuse information.
Recombination experiments with inversion heterozygotes
Open the record for dataset details and reuse information.
Data from: The genetic architecture of recombination rates is polygenic and differs between the sexes in wild house sparrows (Passer domesticus)
Open the record for dataset details and reuse information.
The efficacy of selection may increase or decrease with selfing depending upon the recombination environment
Open the record for dataset details and reuse information.
Recombinant Costimulatory Fusion Proteins as Functional Immunomodulators Enhance Antitumor Activity in Murine B16F10 Melanoma
<p>Cancer immunotherapy has emerged as an important therapeutic modality in preclinical and clinical oncology. Blocking inhibitory signaling and engaging stimulatory signaling enable some patients to produce an efficient antitumor response. In this work, we demonstrate unique and unexpected immunomodulatory features of different costimulatory ligand proteins with no combination of tumor-associated products, which bridge innate and adaptive immune responses against cancer in preventive as well as therapeutic efficacy.</p>
Data from: Cre-mediated, loxP independent sequential recombination of a tripartite transcriptional stop cassette allows for partial read-through transcription
<p>One of the widely used applications of the popular Cre-loxP method for targeted recombination is the permanent activation of marker genes, such as reporter genes or antibiotic resistance genes, by excision of a preceding transcriptional stop signal. The STOP cassette consists of three identical SV40-derived poly(A) signal repeats and is flanked by two loxP sites. We found that in addition to complete loxP-mediated recombination, limiting levels of the Cre recombinase also cause incomplete recombination of the STOP cassette. Partial recombination leads to the loss of only one or two of the three identical poly(A) repeats with recombination breakpoints always precisely matching the end/start of each poly(A) signal repeat without any relevant similarity to the canonical or known cryptic loxP sequences, suggesting that this type of Cre-mediated recombination is loxP-independent. Incomplete deletion of the STOP cassette results in partial read-through transcription, explaining at least some of the variability often observed in marker gene expression from an otherwise identical locus.</p>
Data from: Phylogenomic analysis of Wolbachia strains reveals patterns of genome evolution and recombination
<p><i>Wolbachia</i> are widespread intracellular bacteria that mediate many important biological processes in arthropod species. In this study, we identified 210 conserved single-copy genes in 33 genome-sequenced <i>Wolbachia</i> strains in the A, B, C, D, E and F supergroups. Phylogenomic analysis with these core genes indicate that all 33 <i>Wolbachia</i> strains maintain the supergroup relationship classified previously based on the multilocus sequence typing (MLST) genes. Using an interclade recombination screening method, 14 inter-supergroup recombination events were discovered in six genes (2.9%) among 210 single copy orthologs. This finding suggests a relatively low frequency of intergroup recombination. Interestingly, they have occurred not only between A and B supergroups (9 events), but also between A and E supergroups (5 events). Maintenance of such transfers suggests possible roles in <i>Wolbachia</i> infection related functions. Comparisons of strain divergence using the five genes of the MLST system show a high correlation (Pearson correlation coefficient r = 0.98) between MLST and whole genome divergences, indicating that MLST is a reliable method for identifying related strains when whole genome data are not available. The phylogenomic analysis and the identified core gene set in our study will serve as a valuable foundation for strain identification and the investigation of recombination and genome evolution in <i>Wolbachia</i>.</p>
Widespread recombination suppression facilitates plant sex chromosome evolution
<p>Classical models suggest that recombination rates on sex chromosomes evolve in a stepwise manner to localize sexually antagonistic variants in the sex in which they are beneficial, thereby lowering rates of recombination between X and Y chromosomes. However, it is also possible that sex chromosome formation occurs in regions with pre-existing recombination suppression. To evaluate these possibilities, we constructed linkage maps and a chromosome-scale genome assembly for the dioecious plant <i>Rumex hastatulus</i>. This species has a polymorphic karyotype with a young neo-sex chromosome, resulting from a Robertsonian fusion between the X chromosome and an autosome, in part of its geographical range. We identified the shared and neo-sex chromosome using comparative genetic maps of the two cytotypes. We found that sex-linked regions of both the ancestral and the neo-sex chromosome are embedded in large regions of low recombination. Furthermore, our comparison of the recombination landscape of the neo-sex chromosome to its autosomal homologue indicates that low recombination rates preceded sex linkage. These patterns are not unique to the sex chromosomes; all chromosomes were characterized by massive regions of suppressed recombination spanning most of each chromosome. This represents an extreme case of the periphery-biased recombination seen in other systems with large chromosomes. Across all chromosomes, gene and repetitive sequence density correlated with recombination rate, with patterns of variation differing between repetitive element type. Our findings suggest that ancestrally low rates of recombination may facilitate the formation and subsequent evolution of heteromorphic sex chromosomes.</p>
Breaking a species barrier by enabling hybrid recombination
<p><span><span><span><span><span><span><span><span><span><span><span>Hybrid sterility maintains reproductive isolation between species by preventing them from exchanging genetic material. Anti-recombination can contribute to hybrid sterility when different species' chromosome sequences are too diverged to cross-over efficiently during hybrid meiosis, resulting in chromosome mis-segregation and aneuploidy. The genome sequences of the yeasts <i>Saccharomyces cerevisiae</i> and <i>Saccharomyces paradoxus</i> have diverged by about 12% and their hybrids are sexually sterile: nearly all of their gametes are aneuploid and inviable. Previous methods to increase hybrid yeast fertility have targetted the anti-recombination machinery, enhancing meiotic crossing over but also having counteracting detrimental effects on gamete viability due to increased mutagenesis and ectopic recombination. Therefore the role of anti-recombination has not been fully revealed, and it is often dismissed as a minor player in speciation. By repressing two genes, <i>SGS1</i> and <i>MSH2</i>, specifically during meiosis, whilst maintaining their mitotic expression we were able to increase hybrid fertility 70-fold, to the level of non-hybrid crosses, confirming that anti-recombination is the principal cause of hybrid sterility. Breaking this species barrier allows us to generate, for the first time, viable euploid gametes containing recombinant hybrid genomes from these two highly diverged parent species. </span></span></span></span></span></span></span></span></span></span></span></p>
The evolutionary advantage of fitness-dependent recombination in diploids: a deterministic mutation–selection–balance model
<p>Recombination's omnipresence in nature is one of the most intriguing problems in evolutionary biology. The question of why recombination exhibits certain general features is no less interesting than that of why it exists at all. One such feature is recombination's fitness dependence (FD). The so far developed population-genetics models have focused on the evolution of FD recombination mainly in haploids, although the empirical evidence for this phenomenon comes mostly from diploids. Using numerical analysis of modifier models for infinite panmictic populations, we show here that FD recombination can be evolutionarily advantageous in diploids subjected to purifying selection. We ascribe this advantage to the differential rate of disruption of lower- vs higher-fitness genotypes, which can be manifested in selected systems with at least three loci. We also show that if the modifier is linked to such selected system, it can additionally benefit from modifying this linkage in a fitness-dependent manner. The revealed evolutionary advantage of FD recombination appeared robust to crossover interference within the selected system, either positive or negative. Remarkably, FD recombination was often favored in situations where any constant non-zero recombination was evolutionarily disfavored, implying a relaxation of the rather strict constraints on major parameters (e.g., selection intensity and epistasis) required for the evolutionary advantage of non-zero recombination formulated by classical models.</p>
Environment dependent costs and benefits of recombination in independently evolved populations of Escherichia coli
Understanding of the causes by which reproductive isolation arises remains limited. We examine the role of adaptation in driving reproductive isolation among 12 Escherichia coli populations evolved in two different environments. We found that, regardless of whether parents were selected in the same or different environments, the average fitness of recombinants was lower than the expected, consistent with a prevailing influence of incompatibility between independently accumulated mutations. Exceptions to this pattern occurred among recombinants of some parents evolved in different environments. These recombinants were less fit than expected in the selective environment of one parent, but more fit than expected in the selective environment of the other parent. Our results indicate that both parallel and divergent adaptation can quickly lead to intrinsic genetic barriers contributing to the initial stages of speciation and show that these barriers can be complex, for example, depending on the environment in which recombinant offspring are tested.
Data files for: Structural variation shapes the landscape of recombination in mouse
<p>Supplementary data files for the manuscript "Structural variation shapes the landscape of recombination in mouse."</p>
Ionic Influences on Recombination in Perovskite Solar Cells
<p>Data for our paper: "Ionic Influences on Recombination in Perovskite Solar Cells" <strong>DOI: </strong>10.1021/acsenergylett.7b00490</p>
RecView: An interactive R application for locating recombination positions using pedigree data
<p><span>We present <em>RecView</em>, an interactive R application and </span><span>its homonymous R package</span><span>, to facilitate locating recombination positions along chromosomes or scaffolds using whole-genome genotype data of a three-generation pedigree. </span><span>We demonstrate applicability of <em>RecView </em>using the genotype data from two offspring, as well as their grandparents and parents, of the great reed warbler (<em>Acrocephalus arundinaceus</em>).</span></p>
ScienceDex guides
Understand access before you commit
These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.