2.1.1.355 deferoxamine increases G9a protein and activity in A549 cells, moreover, increases the methyltransferase activity of overexpressed GFP-hG9a fusion proteins 2.1.1.355 dimethyloxalylglycine increases G9a protein and activity in A549 cells 2.1.1.355 additional information hypoxia increases nuclear G9a protein by posttranslational mechanisms and its methyltransferase activity 2.1.1.355 additional information the addition of an [histone H3]-N6,N6,N6-trimethyl-L-lysine9-containing peptide strongly enhances enzyme activity on unmodified chromatin 2.1.1.355 additional information the enzyme activity is stimulated by histone H2B Lys120 ubiquitination