Study with Quizlet and memorize flashcards containing terms like rich in actively expressed genes and comprised of loosely packed nucleosomes., activated because the histones bind less tightly to the DNA than unacetylated histones., Cells age and begin to lose function. and more.

Among neuromodulators, serotonin and dopamine can be incorporated into histones, with histone serotonylation enabling permissive gene expression states in serotonergic neurons and histone dopaminylation regulating cocaine-seeking behaviors in rodents . Nevertheless, several aspects of this biology are still unclear, including the extent and.