>2ot3B (B:) observed residues (from ATOM records)
aysfkvvllgegcvgktslvlrycttlqasfltkklniggkrvnlaiwdtagqerfhalg
piyyrdsngailvyditdedsfqkvknwvkelrkmlgneiclcivgnkidlekerhvsiq
eaesyaesvgakhyhtsakqnkgieelfldlckrmie