>1bl3A (A:) SEQRES residues mhgqvdcspgiwqldcthlegkvilvavhvasgyieaevipaetgqetayfllklagrwp vktvhtdngsnftsttvkaacwwagikqefgipynpqsqgviesmnkelkkiigqvrdqa ehlktavqmavfihnhkrkggiggysagerivdiiatdiq