>3sm5N (N:) observed residues (from ATOM records)
svltqppsvsvapgqtaritcggndigrksvhwnqqkpgqapvlvvcydsdrpsgiperf
sgsnsgntatltisrveagdeadyycqvwdsssdhvifgggtkltvlgqpkaapsvtlfp
psseelqankatlvclisdfypgavtvawkadsspvkagvetttpskqsnnkyaassyls
ltpeqwkshrsyscqvthegstvektvapt