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Widespread effects of DNA methylation and intra-motif dependencies revealed by novel transcript factor binding models

Grau, J.; Schmidt, F.; Schulz, M. H.

2020-10-21 bioinformatics
10.1101/2020.10.21.348193 bioRxiv
Show abstract

Several studies suggested that transcription factor (TF) binding to DNA may be impaired or enhanced by DNA methylation. We present MO_SCPLOWEC_SCPLOWDO_SCPLOWEC_SCPLOWMO_SCPLOWOC_SCPLOW, a toolbox for TF motif analysis that combines information about DNA methylation with models capturing intra-motif dependencies. In a large-scale study using ChIP-seq data for 335 TFs, we identify novel TFs that are affected by DNA methylation. Overall, we find that CpG methylation decreases the likelihood of binding for the majority of TFs. For a considerable subset of TFs, we show that intra-motif dependencies are pivotal for accurately modelling the impact of DNA methylation on TF binding.

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