Chains and heterogens:
PDB Chain Sequences:
>1toaA (A:) gkplvvttigmiadavkniaqgdvhlkglmgpgvdphlytatagdvewlgnadlilyngl hletkmgevfsklrgsrlvvavsetipvsqrlsleeaefdphvwfdvklwsysvkavyes lckllpgktreftqryqayqqqldkldayvrrkaqslpaerrvlvtahdafgyfsraygf evkglqgvstaseasahdmqelaafiaqrklpaifiessiphknvealrdavqarghvvq iggelfsdamgdagtsegtyvgmvthnidtivaalar
>1toaB (B:) gkplvvttigmiadavkniaqgdvhlkglmgpgvdphlytatagdvewlgnadlilyngl hletkmgevfsklrgsrlvvavsetipvsqrlsleeaefdphvwfdvklwsysvkavyes lckllpgktreftqryqayqqqldkldayvrrkaqslpaerrvlvtahdafgyfsraygf evkglqgvstaseasahdmqelaafiaqrklpaifiessiphknvealrdavqarghvvq iggelfsdamgdagtsegtyvgmvthnidtivaalar