>1f46A (A:) observed residues (from ATOM records)
rkeaviimnvaahhgselngelllnsiqqagfifgdmniyhrhlspdgsgpalfslanmv
kpgtfdpemkdfttpgvtifmqvpsygdelqlfklmlqsaqhiadevggvvlddqrrmmt
pqklreyqdiirevkdana