| 2009 |
PRDM9 zinc finger array binds specific DNA sequence motifs at meiotic recombination hotspots, and in vitro binding studies confirmed that the human consensus PRDM9 allele recognizes the 13-mer motif enriched at human hotspots, establishing PRDM9 as the molecular determinant of hotspot positioning. |
In vitro DNA binding assay; genetic association of PRDM9 zinc finger variants with genome-wide hotspot usage; two mouse strains differing in hotspot usage are polymorphic for the PRDM9 zinc finger array |
Science |
High |
20044538 20044539 20044541
|
| 2009 |
PRDM9 (Meisetz) possesses histone H3 lysine 4 trimethylase (H3K4me3) activity and is expressed specifically in early meiosis; its deficiency causes sterility in both sexes in mice, establishing it as an essential meiotic histone methyltransferase. |
Genetic knockout (Prdm9-deficient mice); expression analysis in early meiosis; enzymatic characterization of H3K4me3 activity |
Science |
High |
20044538 20044539 20044541
|
| 2011 |
Transgenic mice expressing PRDM9 variants with modified zinc fingers show changed hotspot activity, altered H3K4me3 levels at hotspots, and chromosome-wide redistribution of crossovers. PRDM9 variant associated with hotspot activity binds specifically to DNA sequences at hotspot centers in vitro, and cis mutations at hotspot centers that reduce activity also reduce PRDM9 binding, directly demonstrating that PRDM9 DNA-binding specificity determines H3K4me3 deposition and hotspot localization. |
Transgenic mouse models with modified PRDM9 zinc fingers; in vitro DNA binding assay; ChIP for H3K4me3; genetic crossover mapping |
PLoS biology |
High |
22028627
|
| 2013 |
Crystal structure of the PRDM9 methyltransferase (PR/SET) domain in complex with histone H3 peptide dimethylated on K4 and S-adenosylhomocysteine revealed the substrate-binding mechanism. PRDM9 catalyzes mono-, di-, and trimethylation of H3K4. Pre-SET and post-SET domains mediate autoinhibition by rearranging substrate and cofactor binding sites. |
X-ray crystallography (crystal structures of active and autoinhibited states); in vitro methyltransferase activity assays with histone H3 peptide substrates |
Cell reports |
High |
24095733
|
| 2014 |
The isolated PR/SET domain of PRDM9 trimethylates H3K36 in vitro, and full-length PRDM9 overexpressed in HEK293 cells also significantly increases H3K4me3 and H3K36me3, identifying H3K36 as a second histone substrate of PRDM9. |
In vitro kinetic methyltransferase assays with histone substrates; overexpression in HEK293 cells with western blot quantification of histone marks |
Journal of Biological Chemistry |
High |
24634223
|
| 2014 |
PRDM9 binding at hotspots actively reorganizes nucleosomes into a symmetrical pattern, creating an extended nucleosome-depleted region centered on the PRDM9 binding motif. DSBs are centered over this binding motif within the nucleosome-depleted region. H3K4me3-marked regions define the boundaries within which Holliday junction branch migration is restricted. |
Genome-wide ChIP-seq for histone modifications; MNase-seq for nucleosome positioning; in vitro binding confirmation; genetic cross analysis for crossover boundaries; two inbred mouse strains differing only in PRDM9 zinc finger domain |
Genome research |
High |
24604780
|
| 2016 |
Full-length PRDM9 trimethylates both H3K4 and H3K36 in vivo in mouse spermatocytes at recombination hotspots. H3K4me3 and H3K36me3 are highly correlated at hotspots but mutually exclusive elsewhere. PRDM9 can place both marks on the same nucleosomes; the K4me3/K36me3 ratio is higher for nucleosomes adjacent to the PRDM9 binding site. Double-positive nucleosomes are dramatically reduced in PRDM9-null mice, confirming PRDM9 dependence. |
ChIP-seq for H3K4me3 and H3K36me3 in spermatocytes from wild-type and Prdm9-null mice; in vitro methyltransferase assays on same histone molecules; co-detection of dual marks on single nucleosomes |
PLoS genetics |
High |
27362481
|
| 2016 |
PRDM9 methyltransferase activity is required for H3K4me3 and H3K36me3 deposition and for DSB formation at PRDM9-binding sites. Each PRDM9 variant independently generates its own set of H3K4me3 marks, revealing that PRDM9 binding and subsequent histone methylation designate DSB sites from which a subset is selected for actual DSB formation. |
Mice expressing methyltransferase-dead PRDM9 (active-site mutation); ChIP-seq for H3K4me3 and H3K36me3; DSB mapping (SSDS); mice carrying two PRDM9 variants with distinct DNA-binding specificities |
Molecular cell |
High |
29478809
|
| 2016 |
The KRAB domain of PRDM9 interacts directly with CXXC1, EWSR1, EHMT2, and CDYL. PRDM9-bound hotspot complexes also associate with the meiotic cohesin REC8 and synaptonemal complex proteins SYCP3 and SYCP1, suggesting PRDM9 links hotspot DNA to the chromosomal axis. |
Yeast two-hybrid; in vitro binding assays; co-immunoprecipitation from mouse spermatocytes |
Molecular biology of the cell |
Medium |
27932493
|
| 2017 |
The KRAB domain of PRDM9 is required for meiosis in mice: truncation of the KRAB domain causes loss of PRDM9 function, altered meiotic prophase, and gametogenesis failure. CXXC1 (a COMPASS complex member) interacts with the KRAB domain and also interacts with IHO1, an essential DSB machinery component, providing a link between hotspot designation and DSB initiation. |
KRAB domain truncation mouse model (in vivo); yeast two-hybrid screens for KRAB domain interactors; phenotypic analysis of meiotic prophase |
Chromosoma |
Medium |
28527011
|
| 2015 |
PRDM9 nuclear localization is restricted to pre-leptonema to early leptonema in male germ cells and is no longer detectable by late zygonema. PRDM9-dependent H3K4me3 marks disappear by pachytene. PRDM9 is not required for incorporation of cohesin complexes into chromosomal axial elements. In the absence of PRDM9, homology recognition and synapsis are inefficient with aberrant DSB repair. |
Immunofluorescence with spermatogenic stage-specific markers; comparison of wild-type versus Prdm9-null germ cells; quantification of RAD51 foci |
Chromosoma |
Medium |
25894966
|
| 2017 |
In vivo ChIP-seq of PRDM9 in mouse spermatocytes identified canonical hotspot binding but also revealed noncanonical recruitment to gene promoters (DSB-dependent) and to CTCF binding sites (DSB-independent), suggesting that hotspot-bound PRDM9 interacts with genomic sequences on the chromosome axis. |
ChIP-seq for PRDM9 in mouse spermatocytes; comparison with Spo11-null and PRDM9 methyltransferase-dead backgrounds |
Genome research |
Medium |
28336543
|
| 2017 |
PRDM9 zinc fingers also mediate multimerization in addition to DNA binding. Highly diverged alleles of PRDM9 preferentially form homo-multimers rather than hetero-multimers. |
Co-immunoprecipitation in transfected human cell line; mapping of PRDM9 binding and histone modifications genome-wide |
eLife |
Medium |
29072575
|
| 2015 |
PRDM9 forms functional heteromeric complexes in cell culture; in heterozygous mice, the stronger PRDM9 allele suppresses chromatin modification and recombination at hotspots of the weaker allele (allelic competition/suppression). PRDM9 function is dosage sensitive: Prdm9+/- mice have reduced numbers and less active hotspots. |
Cell culture co-expression of PRDM9 protein variants; ChIP-seq for H3K4me3 in heterozygous and hemizygous mouse models; genetic crossover analysis |
PLoS genetics |
Medium |
26368021
|
| 2016 |
Humanizing the DNA-binding zinc finger domain of PRDM9 in C57BL/6 mice repositions DSB hotspots and completely restores fertility in male hybrids. The degree to which a PRDM9 variant binds both homologues symmetrically at DSB sites (symmetric PRDM9 binding) strongly correlates with fertility measures, indicating that binding symmetry plays a downstream role in the recombination process. |
Knock-in mouse model (humanized PRDM9 DNA-binding domain); ChIP-seq for PRDM9 binding and DSB mapping (SSDS); hybrid fertility assays |
Nature |
High |
26840484
|
| 2016 |
Crystal structure of PRDM9 allele A zinc fingers 8–11 co-crystallized with a hotspot oligonucleotide revealed that each α-helix contacts up to four adjacent DNA bases in the major groove, with conserved His or Arg residues contacting C:G base pairs and Asn contacting T:A. Allele C binds its cognate hotspot with higher affinity than allele A, explaining allele C dominance in heterozygotes. |
X-ray co-crystallography (ZnF8-12 of hPRDM9A with hotspot DNA); in vitro binding affinity measurements for multiple alleles |
Genes & development |
High |
26833727
|
| 2017 |
Crystal structure of PRDM9 allele C zinc fingers 8–13 co-crystallized with a PRDM9c-specific hotspot sequence showed three structural differences from allele A: Ser764 in ZF9 accommodates variable bases (vs. Arg764 recognizing conserved G in allele A); a two-finger expansion in ZF11 recognizes three additional base pairs; an Arg-Asp dipeptide switch allows identical ZF modules to recognize different sequences. |
X-ray co-crystallography (ZnF8-13 of hPRDM9C with cognate hotspot DNA); structural comparison with PRDM9A complex |
Journal of Biological Chemistry |
High |
28801461
|
| 2020 |
HELLS (a SNF2-like chromatin remodeler) is recruited to recombination hotspots by PRDM9 and is necessary for PRDM9 binding, histone modifications (H3K4me3, H3K36me3), and DNA accessibility at hotspots. In male mice lacking HELLS, DSBs are retargeted to other open chromatin sites, causing germ cell death and sterility. HELLS and PRDM9 form a pioneer complex to create open chromatin at hotspots. |
Proteomic identification of PRDM9 partners; conditional Hells knockout mice; ATAC-seq for chromatin accessibility; ChIP-seq for histone marks and PRDM9 binding; DSB mapping |
Genes & development |
High |
32001511
|
| 2020 |
PRDM9 activity (binding and histone modification) depends on HELLS for chromatin access at PRDM9-directed hotspots. HELLS is also essential for 5-hydroxymethylcytosine (5hmC) enrichment at PRDM9 sites. 5hmC is triggered by PRDM9 binding and histone modification independently of DSB formation. |
Proteomic approaches for PRDM9 partner identification; conditional Hells knockout mouse; ChIP-seq; 5hmC mapping in Spo11-null and PRDM9 methyltransferase-dead mice |
eLife |
High |
33047671
|
| 2020 |
PRDM9 asymmetrically blocks MRE11 from releasing SPO11 after DSB formation, creating a SPO11-bound meiotic recombination intermediate (SPO11-RI) at all hotspots. ATM kinase is required for MRE11-initiated resection to release trapped SPO11 cleavage complexes. |
END-seq on mouse spermatocytes with enzymatic modifications to detect SPO11-bound intermediates; Atm-/- spermatocyte analysis; PRDM9-null comparisons |
Nature communications |
Medium |
32051414
|
| 2019 |
PRDM9 interacts with the meiotic cohesin subunit STAG3 and REC8. These interactions promote normal levels of meiotic DSBs at recombination hotspots in spermatocytes. The efficacy of the Prdm9-Stag3 genetic interaction in promoting DSB formation depends on PRDM9 methyltransferase activity. STAG3 and REC8 promote axis localization of DSB-promoting proteins HORMAD1, IHO1, MEI4, and SPO11 activity. |
Co-immunoprecipitation for protein interactions; genetic interaction analysis (Prdm9 × Stag3 double mutants); immunofluorescence quantification of DSB foci |
Current Biology |
Medium |
30853435
|
| 2020 |
ZCWPW1 is recruited to recombination hotspots by PRDM9 in a largely PRDM9-dependent manner and recognizes the combination of H3K4me3 and H3K36me3 deposited by PRDM9. Zcwpw1 knockout mice show completely normal DSB positioning but persistent DMC1 foci, severe DSB repair and synapsis defects, and sterility, establishing ZCWPW1 as the reader of PRDM9-deposited histone marks required for DSB repair. |
H3K4me3 reader-dead Zcwpw1 knock-in mice; Zcwpw1 knockout mice; ChIP-seq in multiple mutant backgrounds; immunofluorescence for DMC1 foci |
eLife |
High |
32374261 32744506
|
| 2018 |
Deletion of the KRAB domain in mice results in only residual PRDM9 methyltransferase activity in vivo and meiotic arrest, although the KRAB domain is not essential for methyltransferase activity in cell culture. Neither the KRAB, SSXRD, nor post-SET zinc finger domains of PRDM9 regulate meiotic gene expression. |
KRAB domain deletion mouse model; cell culture methyltransferase activity assays; germline transcriptome analysis (mRNA and miRNA) comparing Prdm9 KRAB-deleted and wild-type males |
Genetics |
Medium |
29674518
|
| 2019 |
MRK-740 is a potent (IC50 ~80 nM) PRDM9 inhibitor that binds in the substrate-binding pocket with extensive interactions with the SAM cofactor, conferring SAM-dependent substrate-competitive inhibition. In cells, MRK-740 specifically inhibits H3K4 methylation at endogenous PRDM9 target loci. |
Biochemical inhibition assay; crystal structure of inhibitor-enzyme complex; cell-based ChIP assay for H3K4me3 at PRDM9 target loci |
Nature communications |
High |
31848333
|
| 2017 |
The PRDM9 zinc finger array forms a highly stable complex with its DNA recognition sequence with a dissociation half-time of many hours and nanomolar KD. Polymorphisms in the recognition sequence directly affect binding affinity. Only one ZnF array within the PRDM9 oligomer binds DNA, and longer binding targets are preferred than predicted from the number of ZnFs. |
Gel mobility shift assays; switchSENSE biophysical measurements of binding kinetics and affinity; analysis of multiple PRDM9 alleles and DNA variants |
Chromosome research |
Medium |
28155083
|
| 2019 |
PRDM9 forms a trimer: the ZnF array alone is sufficient for multimerization, at least five ZnFs are required for trimer formation, and the stoichiometry is maintained in the free soluble protein. Only one ZnF array within the PRDM9 trimer contacts DNA; the remaining two ZnF arrays maintain the trimer through ZnF-ZnF interactions. |
Electrophoretic mobility shift assays; mass spectrometry; fluorescence correlation spectroscopy; analysis of tagged protein variants from different expression systems |
Life science alliance |
Medium |
31308055
|
| 2017 |
PRDM9 performs intramolecular automethylation on multiple lysine residues in a lysine-rich region of the post-SET domain. Automethylation is abolished by the active-site mutation C321P (which also disrupts SAM interaction), establishing that automethylation uses the same catalytic mechanism as histone methylation. |
In vitro methyltransferase assays; active-site mutagenesis (C321P); mass spectrometry to identify automethylation sites; rational design of peptidic inhibitor |
Biochemical Journal |
Medium |
28126738
|
| 2014 |
PRDM9 requires the full array of 11 or 12 contiguous zinc fingers for hotspot DNA binding, and in vitro binding parallels in vivo biological activity. Individual nucleotide positions along the binding site vary considerably in tolerance of substitutions, and the protein makes additional contacts to the DNA phosphate backbone. |
In vitro electrophoretic mobility shift assay with systematic mutagenesis of hotspot binding sites; comparison of four hotspot sequences with two PRDM9 alleles |
Genome biology |
Medium |
23618393
|
| 2014 |
A single C321P mutation in the PR/SET domain of PRDM9 significantly weakens its methyltransferase activity. Characterization of PRDM9-methylated recombinant histone octamers identified new histone substrates for the enzyme. |
Site-directed mutagenesis (C321P); biochemical methyltransferase assays with recombinant histone octamers and peptides; biophysical characterization |
Biochemical Journal |
Medium |
24785241
|
| 2020 |
EWSR1 binds both PRDM9 and phosphorylated REC8 (pREC8) in male meiotic cells. Conditional knockout of Ewsr1 before meiosis onset causes meiotic arrest with decreased histone trimethylation at hotspots, impaired DSB repair, and reduced crossover number, demonstrating EWSR1 is essential for promoting PRDM9-dependent histone methylation and linking hotspots to the chromosome axis. |
Co-immunoprecipitation from meiotic cells; conditional Ewsr1 knockout mouse; ChIP for H3K4me3/H3K36me3 at hotspots; immunofluorescence for DSB repair markers |
Molecular biology of the cell |
Medium |
33175657
|
| 2023 |
PRDM9 methylates nonhistone protein CTNNBL1 in cells, as identified by lysine-oriented peptide library screening, peptide spot arrays, in vitro KMT reactions on recombinant proteins, and cell-based validation. PRDM9 preferentially methylates peptide sequences not found in histone proteins. |
Lysine-oriented peptide library screening; peptide spot arrays; in vitro KMT assays on recombinant proteins; cell-based methylation assays; multisite λ-dynamics computational analysis |
Journal of Biological Chemistry |
Medium |
36972790
|
| 2023 |
In mouse brown adipocytes, PRDM9 is robustly induced during differentiation downstream of glutamine/C/EBPβ signaling, and its inactivation (shRNA or inhibitor) attenuates glutamine-triggered H3K4me3-mediated transcriptional induction of adipogenic and thermogenic gene programs, demonstrating a non-meiotic role for PRDM9 in somatic cell differentiation. |
shRNA knockdown; pharmacological inhibition (MRK-740); ChIP for H3K4me3; gene expression analysis in brown adipocyte differentiation; C/EBPβ ChIP at Prdm9 enhancer |
Diabetes |
Medium |
37579296
|
| 2023 |
FUS/TLS physically interacts with PRDM9 and colocalizes with it on meiotic chromosome axes. FUS/TLS also interacts with REC114 (an axis-bound SPO11 auxiliary factor) and co-immunoprecipitates with SPO11 in vitro and in vivo, suggesting FUS/TLS links the PRDM9-hotspot complex to the DSB initiation machinery. ChIP shows FUS/TLS localizes at H3K4me3-marked hotspots. |
Co-immunoprecipitation in vitro and in vivo; immunofluorescence with synaptonemal complex marker SYCP3; ChIP at H3K4me3 hotspots |
Cellular and Molecular Life Sciences |
Medium |
36967403
|
| 2021 |
In mice lacking PRDM9, the meiotic DNA damage checkpoint protein CHK2 acts as a sex-specific modifier: CHK2 inactivation allows female-specific fertility in the absence of PRDM9, revealing that a PRDM9-independent recombination system is compatible with female meiosis when the checkpoint is bypassed. |
Prdm9-null × Chk2-null double mutant mouse models; fertility assays; cytological analysis of meiosis in female and male mice |
Science advances |
Medium |
33097538
|
| 2025 |
In salmonid fish (Oncorhynchus mykiss), full-length PRDM9 drives DSB hotspot positioning away from promoters and toward intergenic sites enriched for H3K4me3 and H3K36me3. Hotspot positions depend on Prdm9 genotype, and rapid hotspot turnover is caused by PRDM9 target motif erosion, demonstrating that PRDM9 function in directing recombination is conserved across vertebrates. |
Genome-wide DSB mapping (SSDS/DSB-seq) in rainbow trout testes; population-scaled recombination maps in multiple salmonid species; Prdm9 genotype-specific hotspot comparisons; ChIP-seq for H3K4me3 and H3K36me3 |
PLoS biology |
High |
39761307
|
| 2021 |
Functional variants in PRDM9 identified in patients with premature ovarian insufficiency impair its methyltransferase activity in vitro, establishing dosage-dependent PRDM9 methyltransferase activity as required for ovarian function in humans. |
Exome sequencing; in vitro methyltransferase activity assays on patient-derived PRDM9 variants |
Genetics in Medicine |
Medium |
34257419
|