Chains and heterogens:
PDB Chain Sequences:
>1ubkL (L:) ssysgpivvdpvtrieghlrievevengkvknayssstlfrgleiilkgrdprdaqhftq rtcgvctythalastrcvdnavgvhipknatyirnlvlgaqylhdhivhfyhlhaldfvd vtaalkadpakaakvassisprkttaadlkavqdklktfvetgqlgpftnayflgghpay yldpetnliatahylealrlqvkaaramavfgaknphtqftvvggvtcydaltpqriaef ealwketkafvdevyipdllvvaaaykdwtqyggtdnfitfgefpkdeydlnsrffkpgv vfkrdfknikpfdkmqieehvrhswyegaearhpwkgqtqpkytdlhgddryswmkapry mgepmetgplaqvliaysqghpkvkavtdavlaklgvgpealfstlgrtaargietavia eyvgvmlqeykdniakgdnvicapwempkqaegvgfvnaprgglshwiriedgkignfql vvpstwtlgprcdknklspveasligtpvadakrpveilrtvhsfdpciacgvh
>1ubkS (S:) lmgprrpsvvylhnaectgcsesvlrafepyidtlildtlsldyhetimaaagdaaeaal eqavnsphgfiavveggiptaangiygkvanhtmldicsrilpkaqaviaygtcatfggv qaakpnptgakgvndalkhlgvkainiagcppnpynlvgtivyylknkaapeldslnrpt mffgqtvheqcprlphfdagefapsfeseearkgwclyelgckgpvtmnncpkikfnqtn wpvdaghpcigcsepdfwdamtpfyqn