Chains and heterogens:
PDB Chain Sequences:
>1bx1A (A:) qiasdveapppapakvekhskkmeegitvnkfkpktpyvgrcllntkitgddapgetwhm vfshegeipyregqsvgvipdgedkngkphklrlysiassalgdfgdaksvslcvkrliy tndagetikgvcsnflcdlkpgaevkltgpvgkemlmpkdpnatiimlgtgtgiapfrsf lwkmffekhddykfnglawlflgvptsssllykeefekmkekapdnfrldfavsreqtne kgekmyiqtrmaqyavelwemlkkdntyfymcglkgmekgiddimvslaaaegidwieyk rqlkkaeqwnvqvy
>1bx1A (A:) hskkmeegitvnkfkpktpyvgrcllntkitgddapgetwhmvfshegeipyregqsvgv ipdgedkngkphklrlysiassalgdfgdaksvslcvkrliytndagetikgvcsnflcd lkpgaevkltgpvgkemlmpkdpnatiimlgtgtgiapfrsflwkmffekhddykfngla wlflgvptsssllykeefekmkekapdnfrldfavsreqtnekgekmyiqtrmaqyavel wemlkkdntyfymcglkgmekgiddimvslaaaegidwieykrqlkkaeqwnvqvy