Chains and heterogens:
PDB Chain Sequences:
>1nntA (A:) svirwctisspeekkcnnlrdltqqerisltcvqkatyldcikaianneadaisldggqa feaglapyklkpiaaevyehtegsttsyyavavvkkgteftvndlqgktschtglgrsag wnipigtllhrgaiewegiesgsveqavakffsascvpgatieqklcrqckgdpktkcar napysgysgafhclkdgkgdvafvkhttvnenapdqkdeyellcldgsrqpvdnyktcnw arvaahavvarddnkvediwsflskaqsdfgvdtksdfhlfgppgkkdpvlkdllfkdsa imlkrvpslmdsqlylgfeyysaiqsmr