Chains and heterogens:
PDB Chain Sequences:
>1fnc_ (-) hskkmeegitvnkfkpktpyvgrcllntkitgddapgetwhmvfshegeipyregqsvgv ipdgedkngkphklrlysiassalgdfgdaksvslcvkrliytndagetikgvcsnflcd lkpgaevkltgpvgkemlmpkdpnatiimlgtgtgiapfrsflwkmffekhddykfngla wlflgvptsssllykeefekmkekapdnfrldfavsreqtnekgekmyiqtrmaqyavel wemlkkdntyvymcglkgmekgiddimvslaaaegidwieykrqlkkaeqwnvevy