>1q90B (B:) observed residues (from ATOM records)
vydwfeerleiqaiadditskyvpphvnifyciggitftcflvqvatgfamtfyyrptva
eafasvqyimtdvnfgwlirsihrwsasmmvlmmvlhvfrvyltggfkrpreltwvtgvi
mavctvsfgvtgyslpwdqvgywavkivtgvpdaipgvggfivellrggvgvgqatltrf
yslhtfvlplltavfmlmhflmirkqgisgpl