Chains and heterogens:
PDB Chain Sequences:
>1cknA (A:) nitteravltlnglqiklhkvvgesrddivakmkdlamddhkfprlpgpnpvsierkdfe klkqnkyvvsektdgirfmmfftrvfgfkvctiidramtvyllpfkniprvlfqgsifdg elcvdivekkfafvlfdavvvsgvtvsqmdlasrffamkrslkefknvpedpailrykew iplehptiikdhlkkanaiyhtdgliimsvdepviygrnfnlfklkpgthhtidfiimse dgtigifdpnlrknvpvgkldgyynkgsivecgfadgtwkyiqgrsdknqandrltyekt llnieenitidelldlf
>1cknB (B:) nitteravltlnglqiklhkvvgesrddivakmkdlamddhkfprlpgpnpvsierkdfe klkqnkyvvsextdgirfmmfftrvfgfkvctiidramtvyllpfkniprvlfqgsifdg elcvdivekkfafvlfdavvvsgvtvsqmdlasrffamkrslkefknvpedpailrykew iplehptiikdhlkkanaiyhtdgliimsvdepviygrnfnlfklkpgthhtidfiimse dgtigifdpnlrknvpvgkldgyynkgsivecgfadgtwkyiqgrsdknqandrltyekt llnieenitidelldlf