>1exxA (A:) observed residues (from ATOM records)
lspqleelitkvskahqetfpslcqlgkyttnssadhrvqldlglwdkfselatkciiki
vefakrlpgftglsiadqitllkaacldilmlrictrytpeqdtmtfsdgltlnrtqmhn
agfgpltdlvfafagqllplemddtetgllsaiclicgdrmdleepekvdklqeplleal
rlyarrrrpsqpymfprmlmkitdlrgistkgaeraitlkmeipgpmppliremle