>2d4rD (D:) observed residues (from ATOM records)
pevraeryipappervyrlakdleglkpylkeveslevvaregartrsrwvavamgkkvr
wleeeewddenlrnrffspegdfdryegtwvflpegegtrvvltltyeltipifggllrk
lvqklmqenvesllkgleervlaass