Chains and heterogens:
PDB Chain Sequences:
>1xllA (A:) vqptpadhftfglwtvgwtgadpfgvatrknldpveavhklaelgaygitfhdndlipfd ateaerekilgdfnqalkdtglkvpmvttnlfshpvfkdggftsndrsirrfalakvlhn idlaaemgaetfvmwggregseydgskdlaaaldrmregvdtaagyikdkgynlrialep kpneprgdiflptvghglafieqlehgdivglnpetgheqmaglnfthgiaqalwaeklf hidlngqrgikydqdlvfghgdltsafftvdllengfpnggpkytgprhfdykpsrtdgy dgvwdsakanmsmylllkeralafradpevqeamktsgvfelgettlnagesaadlmnds asfagfdaeaaaernfafirlnqlaiehllgsr
>1xllB (B:) vqptpadhftfglwtvgwtgadpfgvatrknldpveavhklaelgaygitfhdndlipfd ateaerekilgdfnqalkdtglkvpmvttnlfshpvfkdggftsndrsirrfalakvlhn idlaaemgaetfvmwggregseydgskdlaaaldrmregvdtaagyikdkgynlrialep kpneprgdiflptvghglafieqlehgdivglnpetgheqmaglnfthgiaqalwaeklf hidlngqrgikydqdlvfghgdltsafftvdllengfpnggpkytgprhfdykpsrtdgy dgvwdsakanmsmylllkeralafradpevqeamktsgvfelgettlnagesaadlmnds asfagfdaeaaaernfafirlnqlaiehllgsr