>1brxA (A:) observed residues (from ATOM records)
grpewiwlalgtalmglgtlyflvkgmgvsdpdakkfyaittlvpaiaftmylsmllgyg
ltmvpfggeqnpiywaryadwlfttplllldlallvdadqgtilalvgadgimigtglvg
altkvysyrfvwwaistaamlyilyvlvastfkvlrnvtvvlwsaypvvwligsegagiv
plnietllfmvldvsakvgfglillrsra