>4ovlB (B:) observed residues (from ATOM records) spgiwqldcthlegkvilvavhvasgyieaevipaetgqetayfllklagrwpvktvhtd ngsnftsttvkaacwwagikqedgipynpqsqgviesmnkelkkiigqvrdqaehlktav qmavfihnhkrkgysagerivdiiatdiq