>4un0B (B:) observed residues (from ATOM records)
pcwywdkkdlahtpsqlegldpatearyrregarfifdvgtrlglhydtlatgiiyfhrf
ymfhsfkqfpryvtgacclflagkveetpkkckdiiktarsllndvqfgqfgddpkeevm
vlerillqtikfdlqvehpyqfllkyakqlkgdknkiqklvqmawtfvndslcttlslqw
epeiiavavmylagrlckfeiqewtskprrwweqfvqdvpvdvledichqildlysq