Chains and heterogens:
PDB Chain Sequences:
>1pt9A (A:) mnrslanvilggygttstaggkpmeisgthteinldnaidmireansiiitpgyglcaak aqypiadlvkmlteqgkkvrfgihpvagrmpgqlnvllaeagvpydivlemdeinhdfpd tdlvlvigandtvnsaaqedpnsiiagmpvlevwkskqvivmkrslgvgyaavdnpifyk pntamllgdakktcdalqakvresyqk
>1pt9A (A:) pmeisgthteinldnaidmireansiiitpgyglcaakaqypiadlvkmlteqgkkvrfg ihpvagrmpgqlnvllaeagvpydivlemdeinhdfpdtdlvlvigandtvnsaaqedpn siiagmpvlevwkskqvivmkrslgvgyaavdnpifykpntamllgdakktcdalqakvr es
>1pt9B (B:) mnrslanvilggygttstaggkpmeisgthteinldnaidmireansiiitpgyglcaak aqypiadlvkmlteqgkkvrfgihpvagrmpgqlnvllaeagvpydivlemdeinhdfpd tdlvlvigandtvnsaaqedpnsiiagmpvlevwkskqvivmkrslgvgyaavdnpifyk pntamllgdakktcdalqakvresyqk
>1pt9B (B:) pmeisgthteinldnaidmireansiiitpgyglcaakaqypiadlvkmlteqgkkvrfg ihpvagrmpgqlnvllaeagvpydivlemdeinhdfpdtdlvlvigandtvnsaaqedpn siiagmpvlevwkskqvivmkrslgvgyaavdnpifykpntamllgdakktcdalqakvr es