Chains and heterogens:
PDB Chain Sequences:
>1ckmA (A:) nitteravltlnglqiklhkvvgesrddivakmkdlamddhkfprlpgpnpvsierkdfe klkqnkyvvsektdgirfmmfftrvfgfkvctiidramtvyllpfkniprvlfqgsifdg elcvdivekkfafvlfdavvvsgvtvsqmdlasrffamkrslkefknvpedpailrykew iplehptiikdhlkkanaiyhtdgliimsvdepviygrnfnlfklkpgthhtidfiimse dgtigifdpnlrknvpvgkldgyynkgsivecgfadgtwkyiqgrsdknqandrltyekt llnieenitidelldlf
>1ckmB (B:) nitteravltlnglqiklhkvvgesrddivakmkdlamddhkfprlpgpnpvsierkdfe klkqnkyvvsektdgirfmmfftrvfgfkvctiidramtvyllpfkniprvlfqgsifdg elcvdivekkfafvlfdavvvsgvtvsqmdlasrffamkrslkefknvpedpailrykew iplehptiikdhlkkanaiyhtdgliimsvdepviygrnfnlfklkpgthhtidfiimse dgtigifdpnlrknvpvgkldgyynkgsivecgfadgtwkyiqgrsdknqandrltyekt llnieenitidelldlf