Chains and heterogens:
PDB Chain Sequences:
>1izkA (A:) aandnnvewnglfhdqgplfdnapeptstqsvtlklrtfkgditsanikywdtadnafhw vpmvwdsndptgtfdywkgtipaspsikyyrfqindgtstawyngngpsstepnaddfyi ipnfktpdwlkngvmyqifpdrfyngdssndvqtgsytyngtptekkawgssvyadpgyd nslvffggdlagidqklgyikktlganilylnpifkaptnhkydtqdymavdpafgdnst lqtlindihstangpkgylildgvfnhtgdshpwfdkynnfssqgayesqsspwynyytf ytwpdsyasflgfnslpklnygnsgsavrgviynnsnsvaktylnppysvdgwrldaaqy vdangnngsdvtnhqiwsefrnavkgvnsnaaiigeyvgnanpwtaqgnqwdaatnfdgf tqpvsewitgkdyqnnsasisttqfdswlrgtranyptnvqqsmmnflsnhditrfatrs ggdlwktylalifqmtyvgtptiyygdeygmqggadpdnrrsfdwsqatpsnsavaltqk litirnqypalrtgsfmtlitddtnkiysygrfdnvnriavvlnndsvshtvnvpvwqls mpngstvtdkitghsytvqngmvtvavdghygavlaq