2026-02-28_00000032|hard|9IAN

Nitrogenase maturase NifEN in complex with the cofactor chaperone NifX; Electron microscopy 2.16Å
Protein #1 460 residues (100% resolved)

MKAKDIAELLDEPACSHNKKEKSGCAKPKPGATDGGCSFDGAQIALLPVADVAHIVHGPIACAGSSWDNRGTRSSGPDLYRIGMTTDLTENDVIMGRAEKRLFHAIRQAVESYSPPAVFVYNTCVPALIGDDVDAVCKAAAERFGTPVIPVDSAGFYGTKNLGNRIAGEAMLKYVIGTREPDPLPVGSERPGIRVHDVNLIGEYNIAGEFWHVLPLLDELGLRVLCTLAGDARYREVQTMHRAEVNMMVCSKAMLNVARKLQETYGTPWFEGSFYGITDTSQALRDFARLLDDPDLTARTEALIAREEAKVRAALEPWRARLEGKRVLLYTGGVKSWSVVSALQDLGMKVVATGTKKSTEEDKARIRELMGDDVKMLDEGNARVLLKTVDEYQADILIAGGRNMYTALKGRVPFLDINQEREFGYAGYDGMLELVRQLCITLECPVWEAVRRPAPWDIPA

MKAKDIAELLDEPACSHNKKEKSGCAKPKPGATDGGCSFDGAQIALLPVADVAHIVHGPIACAGSSWDNRGTRSSGPDLYRIGMTTDLTENDVIMGRAEKRLFHAIRQAVESYSPPAVFVYNTCVPALIGDDVDAVCKAAAERFGTPVIPVDSAGFYGTKNLGNRIAGEAMLKYVIGTREPDPLPVGSERPGIRVHDVNLIGEYNIAGEFWHVLPLLDELGLRVLCTLAGDARYREVQTMHRAEVNMMVCSKAMLNVARKLQETYGTPWFEGSFYGITDTSQALRDFARLLDDPDLTARTEALIAREEAKVRAALEPWRARLEGKRVLLYTGGVKSWSVVSALQDLGMKVVATGTKKSTEEDKARIRELMGDDVKMLDEGNARVLLKTVDEYQADILIAGGRNMYTALKGRVPFLDINQEREFGYAGYDGMLELVRQLCITLECPVWEAVRRPAPWDIPA
Protein #2 452 residues (100% resolved)

AEIINRNKALAVSPLKASQTMGAALAILGLARSMPLFHGSQGCTAFAKVFFVRHFREPVPLQTTAMDQVSSVMGADENVVEALKTICERQNPSVIGLLTTGLSETQGCDLHTALHEFRTQYEEYKDVPIVPVNTPDFSGCFESGFAAAVKAIVETLVPERRDQVGKRPRQVNVLCSANLTPGDLEYIAESIESFGLRPLLIPDLSGSLDGHLDENRFNALTTGGLSVAELATAGQSVATLVVGQSLAGAADALAERTGVPDRRFGMLYGLDAVDAWLMALAEISGNPVPDRYKRQRAQLQDAMLDTHFMLSSARTAIAADPDLLLGFDALLRSMGAHTVAAVVPARAAALVDSPLPSVRVGDLEDLEHAARAGQAQLVIGNSHALASARRLGVPLLRAGFPQYDLLGGFQRCWSGYRGSSQVLFDLANLLVEHHQGIQPYHSIYAQKPATEQ

AEIINRNKALAVSPLKASQTMGAALAILGLARSMPLFHGSQGCTAFAKVFFVRHFREPVPLQTTAMDQVSSVMGADENVVEALKTICERQNPSVIGLLTTGLSETQGCDLHTALHEFRTQYEEYKDVPIVPVNTPDFSGCFESGFAAAVKAIVETLVPERRDQVGKRPRQVNVLCSANLTPGDLEYIAESIESFGLRPLLIPDLSGSLDGHLDENRFNALTTGGLSVAELATAGQSVATLVVGQSLAGAADALAERTGVPDRRFGMLYGLDAVDAWLMALAEISGNPVPDRYKRQRAQLQDAMLDTHFMLSSARTAIAADPDLLLGFDALLRSMGAHTVAAVVPARAAALVDSPLPSVRVGDLEDLEHAARAGQAQLVIGNSHALASARRLGVPLLRAGFPQYDLLGGFQRCWSGYRGSSQVLFDLANLLVEHHQGIQPYHSIYAQKPATEQ
Protein #3 158 residues (89% resolved)

MSSPTRQLQVLDSEDDGTLLKVAFASSDRELVDQHFGSSRSFAIYGVNPERSQLLSVVEFGELEQDGNEDKLARKIDLLDGCVAVYCCACGASAVRQLMAIGVQPIKVSEGARIAELIEALQVELREGPSAWLAKAIQRTRGPDMRRFDAMAAEGWDE

MSSPTRQLQVLDSEDDGTLLKVAFASSDRELVDQHFGSSRSFAIYGVNPERSQLLSVVEFGELEQDGNEDKLARKIDLLDGCVAVYCCACGASAVRQLMAIGVQPIKVSEGARIAELIEALQVELREGPSAWLAKAIQRTRGPDMRRFDAMAAEGWDE
Non polymer #4 MG

InChI=1S/Mg/q+2

[Mg+2]
Non polymer #5 S5Q

InChI=1S/C.8Fe.9S/q+2;;;;;;;;;;;;6*-1

[C+2]12345[Fe]67S[Fe]18[S-]9[Fe]21S[Fe]32[S-]6[Fe]3[S-]7[Fe]4([S-]23)S[Fe]52[S-]8[Fe]9[S-]12
Non polymer #6 SF4

InChI=1S/4Fe.4S

[S]12[Fe]3[S]4[Fe]1[S]5[Fe]2[S]3[Fe]45
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Reference