>1xwtA (A:) observed residues (from ATOM records)
afnnnpssvgayssgtyrnlaqemgktniqqkvnstfdnmfgynntqqlyypytengvyk
ahyikainpdegddirtegqswgmtaavmlnkqeefdnlwrfakayqknpdnhpdakkqg
vyawklklnqngfvykvdegpapdgeeyfafallnasarwgnsgefnyyndaitmlntik
nklmenqiirfspyidnltdpsyhipafydyfannvtnqadknywrqvatksrtllknhf
tkvsgsphwnlptflsrldgspvigyifngqanpgqwyefnawrvimnvgldahlmgaqa
whksavnkalgflsyaktnnskncyeqvysyggaqnrgcagegqkaanavallastnagq
aneffnefwslsqptgdyryyngslymlamlhvsgnfkfynntf