>2pk2A (A:) observed residues (from ATOM records)
nnkrwyftreqlenspsrrfgvdpdkelsyrqqaanllqdmgqrlnvsqltintaivymh
rfymiqsftrfpgnsvapaalflaakveeqpkklehvikvahtclhpqeslpdtrseayl
qqvqdlvilesiilqtlgfeltidhphthvvkctqlvraskdlaqtsyfmatnslhlttf
slqytppvvacvcihlackwsnweipvstdgkhwweyvdatvtlelldeltheflqilek
tpnrlkriwnwracea