>2nxtA (A:) observed residues (from ATOM records)
hhwgfgkhngpehwhkdfpiakgerqspvdidthtakydpslkplsvsydqatslrilnn
ghafnvefddsqdkavlkggpldgtyrliqfhfhwgsldgqgsehtvdkkkyaaelhlvh
wntkygdfgkavqqpdglavlgiflkvgsakpglqkvvdvldsiktkgksadftnfdprg
llpesldywtypgslttppllecvtwivlkepisvsseqvlkfrklnfngegepeelmvd
nwrpaqplknrqikasfk