>4e2sB (B:) observed residues (from ATOM records)
piywkatnptlspshlqdlpgftrsvykrdhalitpeshvysplpdwtntlgaylitpat
gshfvmylakmkemsssglppqdierlifvvegavtltnssskkltvdsyaylppnfhhs
ldcvesatlvvferryeylgshttelivgstdkqplletpgevfelrkllpmsvaydfni
htmdfqpgeflnvkevhynqhgllllegqgiyrlgdnwypvqagdviwmapfvpqwyaal
gktrsryllykdvnrnpl