Chains and heterogens:
PDB Chain Sequences:
>1i4tA (A:) srtvdlelelqiellretkrkyesvlqlgraltahlysllqtqhalgdafadlsqkspel qeefgynaetqkllckngetllgavnffvssintlvtktmedtlmtvkqyeaarleyday rtdleelslgprdagtrgrlesaqatfqahrdkyeklrgdvaiklkfleenkikvmhkql llfhnavsayfagnq
>1i4tA (A:) srtvdlelelqiellretkrkyesvlqlgraltahlysllqtqhalgdafadlsqkspel qeefgynaetqkllckngetllgavnffvssintlvtktmedtlmtvkqyeaarleyday rtdleelslgprdagrdkyeklrgdvaiklkfleenkikvmhkqlllfhnavsayfagnq
>1i4tB (B:) vdlelelqiellretkrkyesvlqlgraltahlysllqtqhalgdafadlsqkspelqee fgynaetqkllckngetllgavnffvssintlvtktmedtlmtvkqyeaarleydayrtd leelslgprdagtrgrlesaqatfqahrdkyeklrgdvaiklkfleenkikvmhkqlllf hnavsayfagnqkqleqt
>1i4tB (B:) vdlelelqiellretkrkyesvlqlgraltahlysllqtqhalgdafadlsqkspelqee fgynaetqkllckngetllgavnffvssintlvtktmedtlmtvkqyeaarleydayrtd leelslgprdkyeklrgdvaiklkfleenkikvmhkqlllfhnavsayfagnqkqleqt
>1i4tD (D:) qaikcvvvgdgavgktcllisyttnafpgeyiptvfdnysanvmvdgkpvnlglwdtagl edydrlrplsypqtdvflicfslvspasfenvrakwypevrhhcpntpiilvgtkldlrd dkdtieklkekkltpitypqglamakeigavkylecsaltqrglktvfdeairavlc