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