Chains and heterogens:
PDB Chain Sequences:
>1n6vA (A:) sydspdytdesctfkislrnfrsilswelknhsivpthytllytimskpedlkvvkncan ttrsfcdltdewrstheayvtvlegfsgnttlfscshnfwlaidmsfeppefeivgftnh invmvkfpsiveeelqfdlslvieeqsegivkkhkpeikgnmsgnftyiidklipntnyc vsvylehsdeqaviksplkctllppgqesefs