>5fr1A (A:) observed residues (from ATOM records)
irkklvivgdgacgktcllivfskdqfpevyvptvfenyvadievdgkqvelalwdtagq
edydrlrplsypdtdvilmcfsidspdslenipekwtpevkhfcpnvpiilvgnkkdlrn
dehtrrelakmkqepvkpeegrdmanrigafgymecsaktkdgvrevfematraalqasg
clvl