Chains and heterogens:
PDB Chain Sequences:
>1nftA (A:) ksvirwctvsspeekkcnnlrdltqqerisltcvqkatyldcikaianneadaisldggq vfeaglapyklkpiaaevyehtegsttsyyavavvkkgteftvndlqgktschtglgrsa gwnipigtlihrgaiewegiesgsveqavakffsascvpgatieqklcrqckgdpktkca rnapysgysgafhclkdgkgdvafvkhttvnenapdqkdeyellcldgsrqpvdnyktcn warvaahavvarddnkvediwsflskaqsdfgvdtksdfhlfgppgkkdpvlkdllfkds aimlkrvpslmdsqlylgfeyysaiqsmr