>3nxuB (B:) observed residues (from ATOM records)
shglfkklgipgptplpflgnilsyhkgfcmfdmechkkygkvwgfydgqqpvlaitdpd
miktvlvkecysvftnrrpfgpvgfmksaisiaedeewkrlrsllsptftsgklkemvpi
iaqygdvlvrnlrreaetgkpvtlkdvfgaysmdvitstsfgvnidslnnpqdpfventk
kllrfdfldpfflsitvfpflipilevlnicvfprevtnflrksvkrmkesrledtrvdf
lqlmidsqnalsdlelvaqsiififagyettssvlsfimyelathpdvqqklqeeidavl
pnkapptydtvlqmeyldmvvnetlrlfpiamrlervckkdveingmfipkgvvvmipsy
alhrdpkywtepekflperfskknkdnidpyiytpfgsgprncigmrfalmnmklalirv
lqnfsfkpcketqiplklslggllqpekpvvlkvesr