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TranscriptomicsRecombination initiation maps of individual human genomes
DNA double-strand breaks (DSBs) are introduced in meiosis to initiate recombination and to generate crossovers, the reciprocal exchanges of genetic material between parental chromosomes. Here we present the first high-resolution map of meiotic DSBs in individual human genomes. Comparing DSB maps bet...
ORGANISM(S): Homo sapiens 
2014-11-17 | E-GEOD-59836 | biostudies-arrayexpress
GenomicsHistone Reader BRWD1 Targets and Restricts Recombination to the Igk Locus
B lymphopoiesis requires that immunoglobulin genes be accessible to RAG1-RAG2 recombinase. However, the RAG proteins bind widely to open chromatin, which suggests that additional mechanisms must restrict RAG-mediated DNA cleavage. Here we show that developmental downregulation of interleukin 7 (IL-7...
ORGANISM(S): Mus musculus 
2015-08-24 | E-GEOD-63302 | biostudies-arrayexpress
TranscriptomicsHistone H3 lysine9 acetylation, rather than lysine4 trimethylation, marks meiotic recombination hotspots and promotes recombination initiation in fission yeast
Histone modifications are associated with meiotic recombination hotspots, discrete sites with augmented recombination frequency. For example, trimethylation of histone H3 lysine4 (H3K4me3) marks most hotspots in budding yeast and mouse. Modified histones are known to regulate meiotic recombinatio...
ORGANISM(S): Schizosaccharomyces pombe 
2013-03-07 | E-GEOD-31648 | biostudies-arrayexpress
GenomicsPTIP promotes chromatin changes critical for immunoglobulin class switch recombination
Programmed genetic rearrangements in lymphocytes require transcription at antigen receptor genes to promote accessibility for initiating double-strand break (DSB) formation critical for DNA recombination and repair. Here we show that activated B cells deficient in the PTIP component of the MLL3 (mix...
ORGANISM(S): Mus musculus 
2010-08-25 | E-GEOD-20852 | biostudies-arrayexpress
GenomicsCharacterization of attB and core-attP recombination sites of the integrase from Lactobacilus delbrueckii subsp. bulgaricus bacteriophage mv4
Different attB or attP DNA libraries containing 7-bp random nucleotides were used for in vitro recombination mediated by the purified integrase from mv4 bacteriophage against their cognate wild-type attB or attP recombination site.
ORGANISM(S): Lactobacillus delbrueckii subsp. bulgaricus 
2023-12-10 | E-MTAB-13571 | biostudies-arrayexpress
GenomicsSupression of genetic recombination in the pseudoautosomal region and at subtelomeres in mice with a hypomorphic spo11 allele
Homologous recombination is the key process that generates genetic diversity and drives evolution. SPO11 protein triggers recombination by introducing DNA double stranded breaks at discreet areas of the genome called recombination hotspots. The hotspot locations are largely determined by the DNA bin...
ORGANISM(S): Mus musculus 
2013-09-11 | E-GEOD-48493 | biostudies-arrayexpress
GenomicsMapping mitochondrial DNA recombination in yeast
In this study, we present the first genome-wide recombination map for mitochondrial DNA in yeast. We also assess the impact of the genetic background and of several gene deletions on the recombination profiles.
ORGANISM(S): Saccharomyces cerevisiae 
2014-10-22 | E-MTAB-2474 | biostudies-arrayexpress
TranscriptomicsThe DSIF subunits Spt4 and Spt5 have several unexpected, distinct roles in regulating immunoglobulin class switch recombination
Class-switch recombination (CSR), induced by activation-induced cytidine deaminase, can be divided into two phases: DNA cleavage of the switch (S) regions, and the joining of the cleaved ends of the different S regions. Here, we show that the DSIF complex (Spt4 and Spt5), a transcription elongation ...
ORGANISM(S): Mus musculus 
2013-10-22 | E-GEOD-33206 | biostudies-arrayexpress
GenomicsMeiotic recombination cold spots in chromosomal cohesion sites [ChIP-Seq]
Meiotic chromosome architecture called M-bM-^@M-^\axis-loop structuresM-bM-^@M-^] and histone modifications have been demonstrated to regulate the Spo11-dependent formation of DNA double-strand breaks (DSBs) that trigger meiotic recombination. Using genome-wide chromatin immunoprecipitation (ChIP) a...
ORGANISM(S): Saccharomyces cerevisiae 
2014-03-31 | E-GEOD-52862 | biostudies-arrayexpress
TranscriptomicsSingle-Stranded Annealing Induced by Re-Initiation of Replication Origins Provides a Novel and Efficient Mechanism for Generating Copy Number Expansion via Non-Allelic Homologous Recombination.
Copy number expansions such as amplifications and duplications contribute to human phenotypic variation, promote molecular diversification during evolution, and drive the initiation and/or progression of various cancers. The mechanisms underlying these copy number changes are still incompletely unde...
ORGANISM(S): Saccharomyces cerevisiae 
2013-01-04 | E-GEOD-41259 | biostudies-arrayexpress
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