Chains and heterogens:
PDB Chain Sequences:
>1iipA (A:) mshpspqakpsnpsnprvffdvdiggervgrivlelfadivpktaenfralctgekgigp ttgkplhfkgcpfhriikkfmiqggdfsnqngtggesiygekfedenfhykhdkegllsm anagsntngsqffittvptphldgkhvvfgqvikgmgvakilenvevkgekpaklcviae cgelkegddwgifpkdgsgdshpdfpedadvdlkdvdkillisedlknigntffksqnwe maikkytkvlryvegsraaaedadgaklqpvalscvlnigacklkmsdwqgavdscleal eidpsntkalyrraqgwqglkeydqaladlkkaqeiapedkaiqaellkvkqkikaqkdk ekaayakmfa
>1iipA (A:) shpspqakpsnpsnprvffdvdiggervgrivlelfadivpktaenfralctgekgigpt tgkplhfkgcpfhriikkfmiqggdfsnqngtggesiygekfedenfhykhdkegllsma nagsntngsqffittvptphldgkhvvfgqvikgmgvakilenvevkgekpaklcviaec gelkegddwgifpkdgsgdshpdfpedadvdlkdvdkillisedlknigntffksqnwem aikkytkvlryvegsraaaedadgaklqpvalscvlnigacklkmsdwqgavdscle