Chains and heterogens:
PDB Chain Sequences:
>1cpn_ (-) fdcaeyrstniygyglyevsmkpakntgivssfftytgpahgtqwdeidieflgkdttkv qfnyytngvgghekvislgfdaskgfhtyafdwqpgyikwyvdgvlkhtatanipstpgk immnlwngtgvddwlgsynganplyaeydwvkytsngsvfwepksyfnpstwekadgysn ggvfnctwrannvnftndgklklgltss