CDKN2B GI:17981694 cyclin-dependent kinase inhibitor 2B isoform 1 1 mreenkgmps gggsdeglas aaarglvekv rqlleagadp ngvnrfgrra 50 51 iqvmmmgsar vaellllhga epncadpatl trpvhdaare gfldtlvvlh 100 101 ragarldvrd awgrlpvdla eerghrdvag ylrtatgd