>1nc2A (A:) observed residues (from ATOM records)
qavvtqesalttspgetvtltcrsstgavttsnyanwvqekpdhlftgliggnnnrppgv
parfsgsligdkaaltiagtqtedeaiyfcalwysnhwvfgggtrltvlgqpksspsvtl
fppsseeletnkatlvctitdfypgvvtvdwkvdgtpvtqgmettqpskqsnnkymassy
ltltarawerhssyscqvtheghtvekslsp