Meiotic recombination is initiated by generating DNA double-strand breaks (DSBs) via SPO11, a topoisomerase-related enzyme. The activity of SPO11 protein must be tightly regulated, given its potential threat to genome integrity. The surface-rendering image of a maize meiocyte shows that numerous SPO11-1 foci (green) are located within chromatin (blue) which is partially displayed, whereas only a small fraction of SPO11-1, correlating with DSB number, is loaded on DSY2-labeled chromosome axes (red). The analysis of maize spo11-1 mutants further suggests a possible SPO11-1-dependent mechanism which mediates conformational changes of meiotic chromosome axes. See Ku et al.
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Image Credit: Chiting Wang, Jeremy Catinot and Chung-Ju Rachel Wang.
Perspective
XPF–ERCC1: Linchpin of DNA crosslink repair
PLOS Genetics: published April 9, 2020 | https://doi.org/10.1371/journal.pgen.1008616
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Waking up quiescent neural stem cells: Molecular mechanisms and implications in neurodevelopmental disorders
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High expression in maize pollen correlates with genetic contributions to pollen fitness as well as with coordinated transcription from neighboring transposable elements
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Postglacial migration shaped the genomic diversity and global distribution of the wild ancestor of lager-brewing hybrids
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Dynamic localization of SPO11-1 and conformational changes of meiotic axial elements during recombination initiation of maize meiosis
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Leveraging gene co-expression patterns to infer trait-relevant tissues in genome-wide association studies
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Eliciting priors and relaxing the single causal variant assumption in colocalisation analyses
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Drosophila NUAK functions with Starvin/BAG3 in autophagic protein turnover
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Correction
Correction: Exome sequencing in multiple sclerosis families identifies 12 candidate genes and nominates biological pathways for the genesis of disease
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Opinion Piece
Getting clear about the F-word in genomics
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