>2d4rB (B:) observed residues (from ATOM records)
pevraeryipappervyrlakdleglkpylkeveslevvaregartrsrwvavamgkkvr
wleeeewddenlrnrffspegdfdryegtwvflpegegtrvvltltyeltipifggllrk
lvqklmqenvesllkgleervlaass