>3tvdB (B:) observed residues (from ATOM records)
aairkklvivgdgacgktcllivfskdqfpevyvptvfenyvadievdgkqvelalwdta
gqedydrlrplsypdtdvilmcfsidspdslenipekwtpevkhfcpnvpiilvgnkkdl
rndehtrrelakmkqepvkpeegrdmanrigafgymecsaktkdgvrevfematraalqa