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bioRxiv · 10.1101/2024.11.01.621587

Identification and annotation of centromeric hypomethylated regions with Centromere Dip Region (CDR)-Finder

Mastrorosa, F. K.·Oshima, K. K.·Rozanski, A. N.·Harvey, W. T.·Eichler, E. E.·Logsdon, G. A.
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Abstract

Centromeres are chromosomal regions historically understudied with sequencing technologies due to their repetitive nature and short-read mapping limitations. However, recent improvements in long-read sequencing allowed for the investigation of complex regions of the genome at the sequence and epigenetic levels. Here, we present Centromere Dip Region (CDR)-Finder: a tool to identify regions of hypomethylation within the centromeres of high-quality, contiguous genome assemblies. These regions are typically associated with a unique type of chromatin containing the histone H3 variant CENP-A, which marks the location of the kinetochore. CDR-Finder identifies the CDRs in large and short centromeres and generates a BED file indicating the location of the CDRs within the centromere. It also outputs a plot for visualization, validation, and downstream analysis. CDR-Finder is available at https://github.com/EichlerLab/CDR-Finder.

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Mastrorosa, F. K., Oshima, K. K., Rozanski, A. N., Harvey, W. T., Eichler, E. E., Logsdon, G. A.. 2024-11-04. Identification and annotation of centromeric hypomethylated regions with Centromere Dip Region (CDR)-Finder. https://doi.org/10.1101/2024.11.01.621587

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