Chains and heterogens:
PDB Chain Sequences:
>1r9xA (A:) gssmannalqtiinarlpgeeglwqihlqdgkisaidaqsgvmpitensldaeqglvipp fvephihldttqtagqpnwnqsgtlfegierwaerkallthddvkqrawqtlkwqiangi qhvrthvdvsdatltalkamlevkqevapwidlqivafpqegilsypngealleealrlg advvgaiphfeftreygveslhktfalaqkydrlidvhcdeiddeqsrfvetvaalahhe gmgarvtashttamhsyngaytsrlfrllkmsginfvanplvnihlqgrfdtypkrrgit rvkemlesginvcfghdgvfdpwyplgtanmlqvlhmglhvcqlmgygqindglnlithh sartlnlqdygiaagnsanliilpaengfdalrrqvpvrysvrggkviastqpaqttvyl eqpeaidykr
>1r9xA (A:) alqtiinarlpgeeglwqihlqdgkisaidaqsgvmpitensldaeqglvippfvephih ldttqtagqpnwnqsgtlfegierwaerkallthddvkqrawqtlkwqiangiqhvrthv dvsdatltalkamlevkqevapwidlqivafpqegilsypngealleealrlgadvvgai phfeftreygveslhktfalaqkydrlidvhcdeiddeqsrfvetvaalahhegmgarvt ashttamhsyngaytsrlfrllkmsginfvanplvnihlqgrfdtypkrrgitrvkemle sginvcfghdgvfdpwyplgtanmlqvlhmglhvcqlmgygqindglnlithhsartlnl qdygiaagnsanliilpaengfdalrrqvpvrysvrggkviastqpaqttvyleqpeaid ykr