>1r21_A mol:protein length:128 Antigen Ki-67 GSPEFPGGMWPTRRLVTIKRSGVDGPHFPLSLSTCLFGRGIECDIRIQLPVVSKQHCKI EIHEQEAILHNFSSTNPTQVNGSVIDEPVRLKHGDVITIIDRSFRYENESLQNGRKSTE FPRKIREQEP