>1pn2D (D:) observed residues (from ATOM records)
pvwrfddrdvilynialgattkqlkyvyendsdfqviptfghlitfnsgksqnsfakllr
nfnpmlllhgehylkvhswppptegeikttfepiattpkgtnvvivhgsksvdnksgeli
ysneatyfirncqadnkvyadrpafatnqflapkrapdyqvdvpvsedlaalyrlsgdrn
plhidpnfakgakfpkpilhgmctyglsakalidkfgmfneikarftgivfpgetlrvla
wkesddtivfqthvvdrgtiainnaaiklvgd