>2grfA (A:) observed residues (from ATOM records) svydaaaqltadvkkdlrdswkvigsdkkgngvalvttlfadnqetigyfkrlgdvsqgm andklrghsitlmyalqnfidqldnpddlvcvvekfavnhitrkisaaefgkingpikkv lasknfgdkyanawaklvavvqaal