Chains and heterogens:
PDB Chain Sequences:
>2ak3A (A:) gasarllraaimgapgsgkgtvssritkhfelkhlssgdllrdnmlrgteigvlaktfid qgklipddvmtrlvlhelknltqynwlldgfprtlpqaealdrayqidtvinlnvpfevi kqrltarwihpgsgrvyniefnppktmgiddltgeplvqreddrpetvvkrlkayeaqte pvleyyrkkgvletfsgtetnkiwphvyaflqtklpqrsqetsvtp
>2ak3B (B:) gasarllraaimgapgsgkgtvssritkhfelkhlssgdllrdnmlrgteigvlaktfid qgklipddvmtrlvlhelknltqynwlldgfprtlpqaealdrayqidtvinlnvpfevi kqrltarwihpgsgrvyniefnppktmgiddltgeplvqreddrpetvvkrlkayeaqte pvleyyrkkgvletfsgtetnkiwphvyaflqtklpqrsqetsvtp
>2ak3B (B:) gasarllraaimgapgsgkgtvssritkhfelkhlssgdllrdnmlrgteigvlaktfid qgklipddvmtrlvlhelknltqynwlldgfprtlpqaealdrayqidtvinlnvpfevi kqrltarwihpgsgrvyniefnppktmgiddltgeplvqreddrpetvvkrlkayeaqte pvleyyrkkgvletfsgtetnkiwphvyaflqtklpqrsqe