Chains and heterogens:
PDB Chain Sequences:
>1k1aA (A:) edgdtplhiavvqgnlpavhrlvnlfqqggreldiynnlrqtplhlavittlpsvvrllv tagaspmaldrhgqtaahlacehrsptclralldsaapgtldlearnydgltalhvavnt ecqetvqlllergadidavdiksgrsplihavennslsmvqlllqhganvnaqmysgssa lhsasgrgllplvrtlvrsgadsslknchndtplmvarsrrvidilrg