>2ou3B (B:) observed residues (from ATOM records)
msdikklgsswiinwffgfnqiptnedssiymksvltcakadgvispeekdwalgfcasw
gvadwviedlktyeadealeeviarspqvsmaqrdillsaiwvsaadgelhekekakirk
matilgikeeivdqleqlyyyeaalrqkrlnllypqkspy