Chains and heterogens:
PDB Chain Sequences:
>4xfqA (A:) aglrkmaqpsgvvekcivrvcygnmalnglwlgdtvmcprhviassttstidydyalsvl rlhnfsissgnvflgvvgvtmrgallqikvnqnnvhtpkytyrtvrpgesfnilacydga aagvygvnmrsnytirgsfingacgspgyninngtvefcylhqlelgsgchvgsdldgvm yggyedqptlqvegasslftenvlaflyaalingstwwlsssriavdrfnewavhngmtt vvntdcfsilaaktgvdvqrllasiqslhknfggkqilgytsltdefttgevirqmygvh hhhhh
>4xfqA (A:) aglrkmaqpsgvvekcivrvcygnmalnglwlgdtvmcprhviassttstidydyalsvl rlhnfsissgnvflgvvgvtmrgallqikvnqnnvhtpkytyrtvrpgesfnilacydga aagvygvnmrsnytirgsfingacgspgyninngtvefcylhqlelgsgchvgsdldgvm yggyedqptlqvegasslftenvlaflyaalingstwwlsssriavdrfnewavhngmtt vvntdcfsilaaktgvdvqrllasiqslhknfggkqilgytsltdefttgevirqmyg
>4xfqB (B:) aglrkmaqpsgvvekcivrvcygnmalnglwlgdtvmcprhviassttstidydyalsvl rlhnfsissgnvflgvvgvtmrgallqikvnqnnvhtpkytyrtvrpgesfnilacydga aagvygvnmrsnytirgsfingacgspgyninngtvefcylhqlelgsgchvgsdldgvm yggyedqptlqvegasslftenvlaflyaalingstwwlsssriavdrfnewavhngmtt vvntdcfsilaaktgvdvqrllasiqslhknfggkqilgytsltdefttgevirqmygvh hhhhh
>4xfqB (B:) aglrkmaqpsgvvekcivrvcygnmalnglwlgdtvmcprhviastidydyalsvlrlhn fsissgnvflgvvgvtmrgallqikvnqnnvhtpkytyrtvrpgesfnilacydgaaagv ygvnmrsnytirgsfingacgspgyninngtvefcylhqlelgsgchvgsdldgvmyggy edqptlqvegasslftenvlaflyaalingstwwlsssriavdrfnewavhngmttvvnt dcfsilaaktgvdvqrllasiqslhknfggkqilgytsltdefttgevirqmyg