>1xbpA (A:) observed residues (from ATOM records)
kkyrpytpsrrqmttadfsgltkkrpekaltealpktggrnnrgritsrfiggghkrlyr
iidfkrrdksgvnakvaaieydpnrsariallhyadgekryilapegltvgatvnagpea
epklgnalplrfvpvgavvhalelvpgkgaqlarsagtsvqvqgkesdyvivrlpsgelr
rvhsecyatigavgnaehknivlgkagrsrwlgrkphqrgsamnpvdhphgggegrtgag
rvpvtpwgkptkglktrrkrktsdrfivtr