Chains and heterogens:
PDB Chain Sequences:
>1nkgA (A:) afgittsssayvidtnapnqlkftvsrsscditsiihygtelqyssqgshigsglgsatv tatqsgdyikvtcvtdtltqymvvhngdpiihmatyitaepsigelrfiarlnsdllpne epfgdvsttadgtaiegsdvflvgsetrskfysserfiddqrhciagdahrvcmilnqye sssggpfhrdinsnnggsynalywymnsghvqtesyrmglhgpysmyfsrsgtpstsidt sffadldikgyvaasgrgkvagtasgadssmdwvvhwyndaaqywtytsssgsftspamk pgtytmvyyqgeyavatssvtvsagstttknisgsvktgttifkigewdgqptgfrnaan qlrmhpsdsrmsswgpltytvgssaltdfpmavfksvnnpvtikftatsaqtgaatlrig ttlsfaggrpqatinsytgsapaaptnldsrgvtrgayrglgevydvsipsgtivagtnt itinvisgssgdtylspnfifdcvelfq