UBE2A GI:32967276 ubiquitin-conjugating enzyme E2A isoform 2 1 mstparrrlm rdfkrlqedp pagvsgapse nnimvwnavi fgpegtpfed 50 51 vyadgsicld ilqnrwspty dvssiltsiq slldepnpns pansqaaqly 100 101 qenkreyekr vsaiveqswr dc