CDKN2A GI:17738294 cyclin-dependent kinase inhibitor 2A isoform 4 1 mgrgrcvgps lqlrgqewrc splvpkggaa aaelgpggge nmvrrflvtl 50 51 rirracgppr vrvfvvhipr ltgewaapga paavalvlml lrsqrlgqqp 100 101 lprrpghddg qrpsggaaaa prrgaqlrrp rhshptrarr cpgglpghag 150 151 gaapgrgaag rarclgpsar gpg