>tr|Q64315|Q64315_RAT p21 OS=Rattus norvegicus GN=Cdkn1a
MSDPGDVRPVPHRSKVCRRLFGPVDSEQLSRDCDALMASCLQEARERWNFDFATETPLEG
NYVWERVRSPGLPKIYLSPGSRRRDDLGGDKRPSTSSALLQGPGPAPEDHVALSLSCTLV
SHAPERPEDSPGGTGTSQGRKRRQTSLTDFYHSKRRLVFCKRKP