Isotype specific loss of HP1α but not of HP1β uncovers genomic regions that behave as HP1α-dependent common fragile sites
HP1 proteins are highly evolutionarily conserved chromatin-associated factors known to play essential roles in genome stability and nuclear organization. In mammals, three HP1 isoforms, HP1, HP1{beta} and HP1{gamma}, have been described, but their individual functions remain incompletely characterized. Here, we inactivated HP1 or HP1{beta} in different cell lines and quantified chromosomal breaks…
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