Genomic and epigenomic maps of mouse centromeres and pericentromeres.

ABSTRACT: Satellite DNA comprises ~11% of the mouse genome and is primarily located in centromeres and pericentromeres. We present comprehensive genomic and epigenomic maps of these regions utilizing Hifiasm assemblies, CUT&RUN-seq, DNA methylation analysis, and RNA-seq alongside recent mouse telomere-to-telomere assembly drafts. We show that 120-mer Minor satellites (MiSats) occupy core centromeres, while MiSat length variants localize at centromere-pericentric junctions. Pericentromeres contain mostly homogeneous Major satellites (MaSats), with divergent MaSats concentrated near pericentric non-satellite repeat islands and pericentric-chromosomal junctions. Most centromeres contain higher-order repeats (HORs), with shorter HORs more common. Centromeres are hypomethylated compared to pericentromere

SUBMITTER: Chaudhry G 

PROVIDER: S-EPMC12583555 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature