Chains and heterogens:
PDB Chain Sequences:
>1osfA (A:) dqpmeeeevetfafqaeiaqlmsliintfysnkeiflrelisnssdaldkiryesltdps kldsgkelhinlipnkqdrtltivdtgigmtkadlinnlgtiaksgtkafmealqagadi smigqfgvgfysaylvaekvtvitkhnddeqyawessaggsftvrtdtgepmgrgtkvil hlkedqteyleerrikeivkkhsqfigypitlfve