>4apzS (S:) observed residues (from ATOM records)
mqikikyldetqtriskieqgdwidlraaedvtikkdefklvplgvamelpegyeahvvp
rsstyknfgviqtnsmgvidesykgdndfwffpayalrdteikkgdricqfrimkkmpav
elvevehlgnedrgglgstgtk