preferred_name: histone H4K20 monomethyltransferase activity
preferred_name_lc: histone h4k20 monomethyltransferase activity
label: histone lysine N-monomethyltransferase activity (H4-K20 specific)
label_lc: histone lysine n-monomethyltransferase activity (h4-k20 specific)