Chains and heterogens:
PDB Chain Sequences:
>1i4dA (A:) srtvdlelelqiellretkrkyesvlqlgraltahlysllqtqhalgdafadlsqkspel qeefgynaetqkllckngetllgavnffvssintlvtktmedtlmtvkqyeaarleyday rtdleelslgprdagtrgrlesaqatfqahrdkyeklrgdvaiklkfleenkikvmhkql llfhnavsayfagnqkqleq
>1i4dA (A:) srtvdlelelqiellretkrkyesvlqlgraltahlysllqtqhalgdafadlsqkspel qeefgynaetqkllckngetllgavnffvssintlvtktmedtlmtvkqyeaarleyday rtdleelsesaqatfqahrdkyeklrgdvaiklkfleenkikvmhkqlllfhnavsayfa gnqkqleq
>1i4dB (B:) vdlelelqiellretkrkyesvlqlgraltahlysllqtqhalgdafadlsqkspelqee fgynaetqkllckngetllgavnffvssintlvtktmedtlmtvkqyeaarleydayrtd leelslgprdagtrgrlesaqatfqahrdkyeklrgdvaiklkfleenkikvmhkqlllf hnavsayfagnqkqleqtlq
>1i4dB (B:) vdlelelqiellretkrkyesvlqlgraltahlysllqtqhalgdafadlsqkspelqee fgynaetqkllckngetllgavnffvssintlvtktmedtlmtvkqyeaarleydayrtd leesaqatfqahrdkyeklrgdvaiklkfleenkikvmhkqlllfhnavsayfagnqkql eqtlq
>1i4dD (D:) qaikcvvvgdgavgktcllisyttnafpgeyiptvfdnysanvmvdgkpvnlglwdtagq edydrlrplsypqtdvflicfslvspasfenvrakwypevrhhcpntpiilvgtkldlrd dkdtieklkekkltpitypqglamakeigavkylecsaltqrglktvfdeairavlc