>2bt4F (F:) SEQRES residues
mprslanapimilngpnlnllgqrqpeiygsdtladvealcvkaaaahggtvdfrqsnhe
gelvdwihearlnhcgivinpaayshtsvaildalntcdglpvvevhisnihqrepfrhh
syvsqradgvvagcgvqgyvfgveriaalagagsara