Chains and heterogens:
PDB Chain Sequences:
>1fczA (A:) spqleelitkvskahqetfpslcqlgkyttnssadhrvqldlglwdkfselatkciikiv efakrlpgftglsiadqitllkaacldilmlrictrytpeqdtmtfsdgltlnrtqmhna gfgpltdlvfafagqllplemddtetgllsaiclicgdrmdleepekvdklqepllealr lyarrrrpsqpymfprmlmkitdlrgistkgaeraitlkmeipgpmppliremle