Chains and heterogens:
PDB Chain Sequences:
>1s2iA (A:) mkavvptgkiylgspfysdaqreraakakellaknpsiahvffpfddgftdpdeknpeig girsmvwrdatyqndltgisnatcgvflydmdqlddgsafeigfmramhkpvilvpfteh pekekkmnlmiaqgvttiidgntefekladynfnecpsnpvrgygiy
>1s2iA (A:) mkavvptgkiylgspfysdaqreraakakellaknpsiahvffpfdgftdpdekpeiggi rsmvwrdatyqndltgisnatcgvflydmdqlddgsafeigfmramhkpvilvpftehpe kekkmnlmiaqgvttiidgntefekladynfnecpsnpvrgygiy
>1s2iB (B:) mkavvptgkiylgspfysdaqreraakakellaknpsiahvffpfddgftdpdeknpeig girsmvwrdatyqndltgisnatcgvflydmdqlddgsafeigfmramhkpvilvpfteh pekekkmnlmiaqgvttiidgntefekladynfnecpsnpvrgygiy
>1s2iC (C:) mkavvptgkiylgspfysdaqreraakakellaknpsiahvffpfddgftdpdeknpeig girsmvwrdatyqndltgisnatcgvflydmdqlddgsafeigfmramhkpvilvpfteh pekekkmnlmiaqgvttiidgntefekladynfnecpsnpvrgygiy