Chains and heterogens:
PDB Chain Sequences:
>1to3A (A:) mslnnytikditrasggfamlavdqreamrlmfaaagaktpvadsvltdfkvnaakilsp yasavlldqqfcyrqaveqnavakscamivaaddfipgngipvdnvvldkkinaqavkrd gakalkllvlwrsdedaqqrlnmvkefnelchsngllsiiepvvrpprcgdkfdreqaii daakelgdsgadlykvemplygkgarsdlltasqrlnghinmpwvilssgvdeklfprav rvameagasgflagravwssviglpdtelmlrdvsapklqrlgeivdemmgkrreggshh hhhh
>1to3A (A:) lnnytikditrasggfamlavdqreamrlmfaaagaktpvadsvltdfkvnaakilspya savlldqqfcyrqaveqnavakscamivaaddfipgngipvdnvvldkkinaqavkrdga kalkllvlwrsdedaqqrlnmvkefnelchsngllsiiepvvrpprcgdkfdreqaiida akelgdsgadlykvemplygkgarsdlltasqrlnghinmpwvilssgvdeklfpravrv ameagasgflagravwssviglpdtelmlrdvsapklqrlgeivdemmgkr