Abstract
The inheritable methylation pattern of gene activity, created upon cell differentiation, is further maintained by the “SET” (methyltransferase)-domain proteins. However, it is still not clear how SET-proteins can decide on the required gene activity state and the way their chromatin association is maintained. Here we have found that high levels of histone acetylation – the hallmarks of active chromosome regions in vivo – can increase the affinity of reconstituted nucleosomes to the SET domain of ALL-1 histone methyltransferase in a defined system in vitro.
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