Chains and heterogens:
PDB Chain Sequences:
>1a39A (A:) ekpgetkevhpqlttfrctkrggckpatnfivldslwhwihraeglgpggcgdwgnpppk dvcpdvescakncimegipdysqygvttngtslrlqhilpdgrvpsprvylldktkrrye mlhltgfeftfdvdatklpcgmnsalylsemhptgakskynpggayygtgycdaqcfvtp finglgniegkgsccnemdiweansrashvaphtcnkkglylcegeecafegvcdkngcg wnnyrvnvtdyygrgeefkvntlkpftvvtqflanrrgklekihrfyvqdgkviesfytn kegvpytnmiddefceatgsrkymelgatqgmgealtrgmvlamsiwwdqggnmewldhg eagpcakgegapsnivqvepfpevtytnlrwgeigstyqelq