>2xkqB (B:) observed residues (from ATOM records) ladskavlnqavadlsvahsilhqvhwymrgrgfmiwhpkmdeymeeidgyldemserli tlggapfstlkefsensqlkevlgdynvtieeqlarvvevfrylaalfqkgfdvsdeegd svtndifnvakasiekhiwmlqaelgqapkl