2-oxoglutarate-dependent dioxygenase activity histone H4K20 demethylase activity https://github.com/geneontology/go-ontology/issues/21089 https://github.com/geneontology/go-ontology/issues/29636 https://github.com/geneontology/go-ontology/issues/30578 RHEA:67804 Reactome:R-HSA-2172678 histone H4K20me demethylase activity bf histone demethylase activity (H4K20-specific) RHEA:85911 molecular_function 2010-08-13T10:51:13Z RHEA:85907 Catalysis of the removal of the methyl group from a modified lysine residue at position 20 of the histone H4 protein. This is a dioxygenase reaction that is dependent on Fe(II) and 2-oxoglutarate. histone H4-K20 demethylase activity histone H4-methyl-lysine-20 demethylase activity GO:0035575 histone demethylase activity (H4-K20 specific) Note that the residue position corresponds to the canonical human H4 histone (UniProtKB:P02309); this residue is conserved across all eukaryotes. Note that the initiation methionine is cleaved, so the first residue is S1. histone H4 demethylase activity