Chains and heterogens:
PDB Chain Sequences:
>1eixA (A:) vtnspvvvaldyhnrddalafvdkidprdcrlkvgkemftlfgpqfvrelqqrgfdifld lkfhdipntaahavaaaadlgvwmvnvhasggarmmtaarealvpfgkdaplliavtvlt smeasdlvdlgmtlspadyaerlaaltqkcgldgvvcsaqeavrfkqvfgqefklvtpgi rpqgseagdqrrimtpeqalsagvdymvigrpvtqsvdpaqtlkainaslq
>1eixB (B:) vtnspvvvaldyhnrddalafvdkidprdcrlkvgkemftlfgpqfvrelqqrgfdifld lkfhdipntaahavaaaadlgvwmvnvhasggarmmtaarealvpfgkdaplliavtvlt smeasdlvdlgmtlspadyaerlaaltqkcgldgvvcsaqeavrfkqvfgqefklvtpgi rpqgseagdqrrimtpeqalsagvdymvigrpvtqsvdpaqtlkainaslq
>1eixC (C:) vtnspvvvaldyhnrddalafvdkidprdcrlkvgkemftlfgpqfvrelqqrgfdifld lkfhdipntaahavaaaadlgvwmvnvhasggarmmtaarealvpfgkdaplliavtvlt smeasdlvdlgmtlspadyaerlaaltqkcgldgvvcsaqeavrfkqvfgqefklvtpgi rpqgseagdqrrimtpeqalsagvdymvigrpvtqsvdpaqtlkainaslqr
>1eixD (D:) vtnspvvvaldyhnrddalafvdkidprdcrlkvgkemftlfgpqfvrelqqrgfdifld lkfhdipntaahavaaaadlgvwmvnvhasggarmmtaarealvpfgkdaplliavtvlt smeasdlvdlgmtlspadyaerlaaltqkcgldgvvcsaqeavrfkqvfgqefklvtpgi rpqgseagdqrrimtpeqalsagvdymvigrpvtqsvdpaqtlkainaslq