part_of part of part of chromatin organization regulation of gene expression regulation of gene expression, epigenetic https://github.com/geneontology/go-ontology/issues/22201 GO:0040029 A process that modulates the frequency, rate or extent of gene expression by remodelling of chromatin by either modifying the chromatin fiber, the nucleosomal histones, or the DNA. Once established, this regulation may be maintained over many cell divisions. It can also be heritable in the absence of the instigating signal. biological_process