Chains and heterogens:
PDB Chain Sequences:
>1sep_ (-) meadglgcavcvltgasrgfgralapqlarllspgsvmlvsarsesmlrqlkeelgaqqp dlkvvlaaadlgteagvqrllsavrelprpeglqrlllinnaatlgdvskgflnvndlae vnnywalnltsmlcltsgtlnafqdspglsktvvnisslcalqpykgwglycagkaardm lyqvlaaeepsvrvlsyapgpldndmqqlaretskdpelrsklqklksdgalvdcgtsaq kllgllqkdtfqsgahvdfyd
>1sep_ (-) adglgcavcvltgasrgfgralapqlarllspgsvmlvsarsesmlrqlkeelgaqqpdl kvvlaaadlgteagvqrllsavrelprpeglqrlllinnaatlgdvskgflnvndlaevn nywalnltsmlcltsgtlnafqdspglsktvvnisslcalqpykgwglycagkaardmly qvlaaeepsvrvlsyapgpldndmqqlaretskdpelrsklqklksdgalvdcgtsaqkl lgllqkdtfqsgahvdfyd