UBE2A GI:32967280 ubiquitin-conjugating enzyme E2A isoform 1 1 mstparrrlm rdfkrlqedp pagvsgapse nnimvwnavi fgpegtpfed 50 51 gtfkltieft eeypnkpptv rfvskmfhpn vyadgsicld ilqnrwspty 100 101 dvssiltsiq slldepnpns pansqaaqly qenkreyekr vsaiveqswr 150 151 dc