>4nhuA (A:) observed residues (from ATOM records) svtqpdarvtvsegaslqlrckysysatpylfwyvqyprqglqlllkyysgdpvvqgvng feaefsksnssfhlrkasvhwsdsavyfcavslhrpaltfgsgtkvivlpniqnpdpavy qlrdskssdksvclftdfdsqtnvsqskdsdvyitdkcvldmrsmdfksnsavawsnksd facanafnsiipedtff