Chains and heterogens:
PDB Chain Sequences:
>4ux6B (B:) sclgsimnpksltrgprdkptpleellphaiefinqyygsfkeakieehlarleavtkei ettgtyqltldelifatkmawrnaprcigriqwsnlqvfdarncstaqemfqhicrhily atnngnirsaitvfpqrsdgkhdfrlwnsqliryagyqmpdgtirgdaatleftqlcidl gwkprygrfdvlplvlqadgqdpevfeippdlvlevtmehpkyewfqelglkwyalpava nmllevgglefpacpfngwymgteigvrdfcdtqrynileevgrrmglethtlaslwkdr avteinvavlhsfqkqnvtimdhhtasesfmkhmqneyrarggcpadwiwlvppvsgsit pvfhqemlnyvlspfyyyqiepwkthiwq