Chains and heterogens:
PDB Chain Sequences:
>1c8rA (A:) tgrpewiwlalgtalmglgtlyflvkgmgvsdpdakkfyaittlvpaiaftmylsmllgy gltmvpfggeqnpiywaryadwlfttpllllnlallvdadqgtilalvgadgimigtglv galtkvysyrfvwwaistaamlyilyvlffgfsmrpevastfkvlrnvtvvlwsaypvvw ligsegagivplnietllfmvldvsakvgfglillrsraifg