>6xkpB (B:) observed residues (from ATOM records)
nlcpfgevfnatrfasvyawnrkrisncvadysvlynsasfstfkcygvsptklndlcft
nvyadsfvirgdevrqiapgqtgkiadynyklpddftgcviawnsnnldskvggnynyly
rlfrksnlkpferdisteiyqagstpcngvegfncyfplqsygfqptngvgyqpyrvvvl
sfellhapatvcgp