>1xtfB (B:) SEQRES residues pfvnkqfnykdpvngvdiayikipnagqmqpvkafkihnkiwviperdtftnpeegdlnp ppeakqvpvsyydstylstdnekdnylkgvtklferiystdlgrmlltsivrgipfwggs tidtelkvidtncinviqpdgsyrseelnlviigpsadiiqfecksfghevlnltrngyg stqyirfspdftfgfeeslevdtnpllgagkfatdpavtlahqlihaghrlygiainpnr vfkvntnayyemsglevsfeelrtfgghdakfidslqenefrlyyynkfkdiastlnkak sivgttaslqymknvfkekyllsedtsgkfsvdklkfdklykmlteiytednfvkffkvl nrktflnfdkavfkinivpkvnytiydgfnlrntnlaanfngqnteinnmnftklknftp ghhhhhh