Chains and heterogens:
PDB Chain Sequences:
>1gu7A (A:) mitaqavlytqhgepkdvlftqsfeidddnlapnevivktlgspvnpsdinqiqgvypsk pakttgfgttepaapcgneglfevikvgsnvssleagdwvipshvnfgtwrthalgnddd fiklpnpaqskangkpngltinqgatisvnpltaylmlthyvkltpgkdwfiqnggtsav gkyasqigkllnfnsisvirdrpnldevvaslkelgatqvitedqnnsrefgptikewik qsggeaklalncvggksstgiarklnnnglmltyggmsfqpvtiptslyifknftsagfw vtellknnkelktstlnqiiawyeegkltdaksietlydgtkplhelyqdgvanskdgkq lity
>1gu7B (B:) mitaqavlytqhgepkdvlftqsfeidddnlapnevivktlgspvnpsdinqiqgvypsk pakttgfgttepaapcgneglfevikvgsnvssleagdwvipshvnfgtwrthalgnddd fiklpnpaqskangkpngltinqgatisvnpltaylmlthyvkltpgkdwfiqnggtsav gkyasqigkllnfnsisvirdrpnldevvaslkelgatqvitedqnnsrefgptikewik qsggeaklalncvggksstgiarklnnnglmltyggmsfqpvtiptslyifknftsagfw vtellknnkelktstlnqiiawyeegkltdaksietlydgtkplhelyqdgvanskdgkq lity