Abstract
Meiotic recombination events cluster into narrow segments of the genome, defined as hotspots. Here, we demonstrate that a major player for hotspot specification is the Prdm9 gene. First, two mouse strains that differ in hotspot usage are polymorphic for the zinc finger DNA binding array of PRDM9. Second, the human consensus PRDM9 allele is predicted to recognize the 13-mer motif enriched at human hotspots; this DNA binding specificity is verified by in vitro studies. Third, allelic variants of PRDM9 zinc fingers are significantly associated with variability in genome-wide hotspot usage among humans. Our results provide a molecular basis for the distribution of meiotic recombination in mammals, in which the binding of PRDM9 to specific DNA sequences targets the initiation of recombination at specific locations in the genome.
MeSH Terms
Alleles
Amino Acid Sequence
Animals
Base Sequence
Binding Sites
DNA/chemistry,metabolism
DNA Breaks, Double-Stranded
DNA-Binding Proteins/chemistry,genetics,metabolism
Genome
Genome, Human
Genotype
Histone-Lysine N-Methyltransferase/chemistry,genetics,metabolism
Humans
Meiosis/genetics
Mice
Mice, Inbred C57BL
Molecular Sequence Data
Phenotype
Recombination, Genetic
Zinc Fingers/genetics
Chemicals
DNA-Binding Proteins
DNA
Histone-Lysine N-Methyltransferase
PRDM9 protein, human
prdm9 protein, mouse
Authors & Affiliations
8 authors, click to expand affiliations / ORCID
Baudat F
Institut de Génétique Humaine, UPR1142, CNRS, Montpellier, France.
Buard J
Grey C
Fledel-Alon A
Ober C
Przeworski M
Coop G
de Massy B
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