Chains and heterogens:
PDB Chain Sequences:
>1fy2A (A:) mellllsnstlpgkawlehalplianqlngrrsavfipfagvtqtwdeytdktaevlapl gvnvtgihrvadplaaiekaeiiivgggntfqllkesrergllapmadrvkrgalyigws aganlacptirttndmpivdpngfdaldlfplqinphftnalpeghkgetreqrirellv vapeltviglpegnwiqvsngqavlggpnttwvfkageeavaleaghrf
>1fy2A (A:) mellllsnstlpgkawlehalplianqlngrrsavfipfagvtqtwdeytdktaevlapl gvnvtgihrvadplaaiekaeiiivgggntfqllkesrergllapmadrvkrgalyigws aganlacptirttndmpivdpngfdaldlfplqinphftntreqrirellvvapeltvig lpegnwiqvsngqavlggpnttwvfkageeavaleaghrf