Chains and heterogens:
PDB Chain Sequences:
>1i4lA (A:) srtvdlelelqiellretkrkyesvlqlgraltahlysllqtqhalgdafadlsqkspel qeefgynaetqkllckngetllgavnffvssintlvtktmedtlmtvkqyeaarleyday rtdleelslgprdagtrgrlesaqatfqahrdkyeklrgdvaiklkfleenkikvmhkql llfhnavsayfagnqkqleqt
>1i4lA (A:) srtvdlelelqiellretkrkyesvlqlgraltahlysllqtqhalgdafadlsqkspel qeefgynaetqkllckngetllgavnffvssintlvtktmedtlmtvkqyeaarleyday rtdleelslgprdagdkyeklrgdvaiklkfleenkikvmhkqlllfhnavsayfagnqk qleqt
>1i4lB (B:) dlelelqiellretkrkyesvlqlgraltahlysllqtqhalgdafadlsqkspelqeef gynaetqkllckngetllgavnffvssintlvtktmedtlmtvkqyeaarleydayrtdl eelslgprdagtrgrlesaqatfqahrdkyeklrgdvaiklkfleenkikvmhkqlllfh navsayfagnqkqleqt
>1i4lB (B:) dlelelqiellretkrkyesvlqlgraltahlysllqtqhalgdafadlsqkspelqeef gynaetqkllckngetllgavnffvssintlvtktmedtlmtvkqyeaarleydayrtdl eelslgprdkyeklrgdvaiklkfleenkikvmhkqlllfhnavsayfagnqkqleqt
>1i4lD (D:) qaikcvvvgdgavgktcllisyttnafpgeyiptvfdnysanvmvdgkpvnlglwdtagq edydrlrplsypqtdvflicfslvspasfenvrakwypevrhhcpntpiilvgtkldlrd dkdtieklkekkltpitypqglamakeigavkylecsaltqrglktvfdeairavlc