>2qexM (M:) observed residues (from ATOM records) arsaysyirdawenpgdgqlaelqwqrqqewrnegaverierptrldkarsqgykakqgv ivarvsvrkgsarkrrhkagrrskrqgvtritrrkdiqrvaeerasrtfpnlrvlnsysv gqdgrqkwhevilidpnhpaiqndddlswicaddqadrvfrgltgagrrnrglsgkgkgs ektrpslrsnggka