Chains and heterogens:
PDB Chain Sequences:
>1xraA (A:) akhlftsesvseghpdkiadqisdavldaileqdpkarvacetyvktgmvlvggeittsa wvdieeitrntvreigyvhsdmgfdanscavlsaigkqspdinqgvdradpleqgagdqg lmfgyatnetdvlmpapityahrlvqrqaevrkngtlpwlrpdaksqvtfqyddgkivgi davvlstqhseeidqkslqeavmeeiikpilpaewltsatkffinptgrfviggpmgdcg ltgrkiivdtyggmarhgggafsgkdpskvdrsaayaaryvaknivaagladrceiqvsy aigvaeptsimvetfgtekvpseqltllvreffdlrpygliqmldllhpiyketaayghf grehfpwektdkaqllrdaaglk
>1xraA (A:) akhlftsesvseghpdkiadqisdavldaileqdpkarvacetyvktgmvlvggeittsa wvdieeitrntvreigyvhsdmgfdanscavlsaigkqspdradpleqgagdqglmfgya tnetdvlmpapityahrlvqrqaevrkngtlpwlrpdaksqvtfqyddgkivgidavvls tqhseeidqkslqeavmeeiikpilpaewltsatkffinptgrfviggpmgdcgltgrki ivdtyggmarhgggafsgkdpskvdrsaayaaryvaknivaagladrceiqvsyaigvae ptsimvetfgtekvpseqltllvreffdlrpygliqmldllhpiyketaayghfgrehfp wektdkaqllrdaaglk