DNMT3A GI:28559071 DNA cytosine methyltransferase 3 alpha isoform c 1 mpampssgpg dtsssaaere edrkdgeeqe eprgkeerqe psttarkvgr 50 51 pgrkrkhppv esgdtpkdpa viskspsmaq dsgasellpn gdlekrsepq 100 101 peegspaggq kggapaegeg aaetlpeasr avengcctpk egrgapaeag 150 151 essapgaass gptsip