>1nb2A (A:) observed residues (from ATOM records)
kertflmvkpdgvqrnlvgevvkrfeskglklagaklmviskdgaaahyaelgggpffgg
lvggatsgpvfamvweglnaaatarqilgatnpsdaapgtirgdfgvsagrnaihgsdsa
gsaakeigaffgggeaasgtpaaaadiyg