CDKN2A GI:98985804 cyclin-dependent kinase inhibitor 2A isoform 3 1 mepaagssme psadwlataa argrveevra lleagalpna pnsygrrpiq 50 51 vgrgsaagag dggrlwrtkf agelesgsas ilrkkgrlpg efsegvcnhr 100 101 pppgdalgaw eakeee