Chains and heterogens:
PDB Chain Sequences:
>1so3A (A:) mslpmlqvaldnqtmdsayettrliaeevdiievgtilcvgegvravrdlkalyphkivl adakiadagkilsrmcfeanadwvtviccadintakgaldvakefngdvqieltgywtwe qaqqwrdagigqvvyarsrdaqaagvawgeaditaikrlsdmgfkvtvtgglaledlplf kgipihvfiagrsirdaaspveaarqfkrsiaelwg
>1so3A (A:) slpmlqvaldnqtmdsayettrliaeevdiievgtilcvgegvravrdlkalyphkivla dakiadagkilsrmcfeanadwvtviccadintakgaldvakefngdvqieltgywtweq aqqwrdagigqvvyarsrdaqaagvawgeaditaikrlsdmgfkvtvtgglaledlplfk gipihvfiagrsirdaaspveaarqfkrsiaelw
>1so3B (B:) mslpmlqvaldnqtmdsayettrliaeevdiievgtilcvgegvravrdlkalyphkivl adakiadagkilsrmcfeanadwvtviccadintakgaldvakefngdvqieltgywtwe qaqqwrdagigqvvyarsrdaqaagvawgeaditaikrlsdmgfkvtvtgglaledlplf kgipihvfiagrsirdaaspveaarqfkrsiaelwg
>1so3B (B:) slpmlqvaldnqtmdsayettrliaeevdiievgtilcvgegvravrdlkalyphkivla dakiadagkilsrmcfeanadwvtviccadintakgaldvakefngdvqieltgywtweq aqqwrdagigqvvyarsrdaqaagvawgeaditaikrlsdmgfkvtvtgglaledlplfk gipihvfiagrsirdaaspveaarqfkrsiaelwg