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