Chains and heterogens:
PDB Chain Sequences:
>2his_ (-) attlkeaadgagrdfgfaldpnrlseaqykaiadsefnlvvaenamkwdatepsqnsfsf gagdrvasyaadtgkelyghtlvwhsqlpdwaknlngsafesamvnhvtkvadhfegkva swdvvnaafadgggrrqdsafqqklgngyietafraaraadptaklcindynveginaks nslydlvkdfkargvpldcvgfqsnlivgqvpgdfrqnlqrfadlgvdvriteldirmrt psdatklatqaadykkvvqacmqvtrcqgvtvwgitdkyswvpdvfpgegaalvwdasya kkpayaavmeaf