>2bt4K (K:) SEQRES residues
mprslanapimilngpnlnllgqrqpeiygsdtladvealcvkaaaahggtvdfrqsnhe
gelvdwihearlnhcgivinpaayshtsvaildalntcdglpvvevhisnihqrepfrhh
syvsqradgvvagcgvqgyvfgveriaalagagsara