Chains and heterogens:
PDB Chain Sequences:
>9atcA (A:) anplyqkhiisindlsrddlnlvlataaklkanpqpellkhkviascffeastrtrlsfe tsmhrlgasvvgfsdsantslgkkgetladtisvistyvdaivmrhpqegaarlatefsg nvpvlnagdgsnqhptqtlldlftiqetqgrldnlhvamvgdlkfgrtvhsltqalakfd gnrfyfiapdalampqyildmldekgiawslhssieevmaevdilymtrvqkerldpsey anvkaqfvlrasdlhnakanmkvlhplprvdeiatdvdktphawyfqqagngifarqall alvlnrdlvl
>9atcB (B:) qveaikrgtvidhipaqigfkllslfkltetdqritiglnlpsgemgrkdlikientfls edqvdqlalyapqatvnridnyevvgksrpslperidnvlvcpnsncishaepvsssfav rkrandialkckycekefshnvvlan