Chains and heterogens:
PDB Chain Sequences:
>2b56A (A:) splslpstklnpspdhyavwgkaimaennrrvgpehmfrtairaqqqlqgladkwtpdak vyccgsmvtygqmergsdldlacmfddpypshevqakrtdklrtvikryvphylrnnllg lteartpvvklrfandekvararytplseeedrkartalldvrnqcvgdndveyiaekmg rdnvegirvdrttygcriaiqctskeqmieaigffpdgkimtrgmredytrdvldvrfvp emfmyrwdisfvgygvknsylirhylhngpvaarhtamavkawgkatnvgagsgamltsy avtvmfiyyllvtrqvlwvdpwslphpahlprypdfsplydcdptelgrllhgffifyah hfdyerevvslnrnrrsyrsdigwnfpqnkkgtfsynfciedpyedvgtgglnlvrhlhp akfqlvkqeflraaqcmerflptnapeksilgvkradlrhferdrdre
>2b56A (A:) npspdhyavwgkaimaennrrvgpehmfrtairaqqqlqgladkwtpdakvyccgsmvty gqmergsdldlacmfddpypshevqakrtdklrtvikryvphylrnnllglteartpvvk lrfandekvararytplseeedrkartalldvrnqcvgdndveyiaekmgrdnvegirvd rttygcriaiqctskeqmieaigffpdgkimtrgmredytrdvldvrfvpemfmyrwdis fvgygvknsylirhylhngpvaarhtamavkawgkatnvgagsgamltsyavtvmfiyyl lvtrqvlwvdpwslphpahlprypdfsplydcdptelgrllhgffifyahhfdyerevvs lnrnrrsyrsdigwnfpqnkkgtfsynfciedpyedvgtgglnlvrhlhpakfqlvkqef lraaqcmerflptnapeksilgvk