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This study explores the effects of induced and uninduced states of PRDM9 on Hlx1 variants, focusing on competitor interactions in different conditions. We investigate the differential shifting of DNA fractions across induced PRDM9 constructs, including the cold competitor, Hlx1, and other variants. Key metrics, such as the fraction shifted of responsiveness, are analyzed to understand the molecular mechanisms underpinning Hlx1 functionality. Our findings contribute to the broader understanding of gene regulation mechanisms in response to DNA competitors.
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A E Hlx1* (75 bp) + + + + + - + + Induced PRDM9Cst - + - + + + + - Induced PRDM9Dom2 - - + - - - - - Induced vector - - - - - - - + Cold competitor - - - HlxEsrPsmbPbx - B Hlx1 186,441,806 186,439,201 Fraction shifted 0.0 0.35 0.03 0.02 0.06 0.03 0.28 0.01 Hlx1* (75 bp) + + + + + - + + + + - Uninduced PRDM9Cst - + - - - - - - - - - Induced PRDM9Cst - - + + + + - - - - - Hlx1 cold - - - + - - - - + - - Non-competitor DNA - - - - + - - - - + - Uninduced PRDM9Dom2 - - - - - - + - - - - Induced PRDM9Dom2 - - - - - - - + + + + Hlx1* (75 bp) + + + + + + + Induced PRDM9Cst + + + + + + + Competitor (bp) - 30 31 32 33 36 75 Fraction shifted 0.0 0.0 0.34 0.07 0.41 0.0 0.01 0.01 0.01 0.01 0.0 B6 Hlx1*(75 bp) + - CAST Hlx1* (76 bp) - + Induced PRDM9Cst + + C Hlx1(31 bp)C57BL/6J – AGTGTGCAGACTTGGACCCTGCCCTTTCTTT Hlx1(31 bp)CAST/EiJ – AGTGTTCAGACTTGGACTCTGCCCTTCCTTT Inferred motif Fraction shifted 0.66 0.62 0.11 0.12 0.08 0.08 0.05 0.47 0.16 D