2026-08-12 REL RCSB INITIAL_RELEASE REPOSITORY INITIAL_RELEASE REPOSITORY INITIAL_RELEASE REPOSITORY INITIAL_RELEASE REPOSITORY INITIAL_RELEASE REPOSITORY INITIAL_RELEASE REPOSITORY INITIAL_RELEASE REPOSITORY EXPERIMENTAL_SUMMARY em_admin em_vitrification _em_admin.last_update _em_vitrification.instrument STRUCTURE_SUMMARY em_admin entity _chem_comp.name _em_admin.last_update _entity.pdbx_description EXPERIMENTAL_PREPARATION em_admin em_vitrification _em_admin.last_update _em_vitrification.instrument REMEDIATION REPOSITORY Metalloprotein remediation STRUCTURE_SUMMARY atom_site chem_comp chem_comp_atom chem_comp_bond em_admin entity pdbx_entity_instance_feature pdbx_entity_nonpoly pdbx_entry_details pdbx_modification_feature pdbx_nonpoly_atom_coordination pdbx_nonpoly_atom_coordination_sphere pdbx_nonpoly_atom_coordination_sphere_order pdbx_nonpoly_scheme pdbx_struct_conn_angle pdbx_validate_close_contact struct_conn struct_conn_type _atom_site.B_iso_or_equiv _atom_site.Cartn_x _atom_site.Cartn_y _atom_site.Cartn_z _atom_site.auth_atom_id _atom_site.auth_comp_id _atom_site.label_atom_id _atom_site.label_comp_id _atom_site.type_symbol _chem_comp.formula _chem_comp.formula_weight _chem_comp.id _chem_comp.mon_nstd_flag _chem_comp.name _chem_comp.type _chem_comp_atom.atom_id _chem_comp_atom.comp_id _chem_comp_atom.pdbx_aromatic_flag _chem_comp_atom.pdbx_stereo_config _chem_comp_atom.type_symbol _em_admin.last_update _entity.pdbx_description _pdbx_entity_instance_feature.auth_comp_id _pdbx_entity_instance_feature.comp_id _pdbx_entity_nonpoly.comp_id _pdbx_entity_nonpoly.name _pdbx_entry_details.has_protein_modification _pdbx_nonpoly_scheme.mon_id _pdbx_nonpoly_scheme.pdb_mon_id RCSB RCSB 2024-07-25 2025-01-15 2025-01-15 2026-08-12 National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS) 5R01GM148607-02 United States National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS) 5R35GM138206 United States Other private Searle Scholars Azotobacter vinelandii filamentous 2:2:1 MoFeP:FeP:FeSII-Complex (termini; C1 symmetry) Narehood SM Cook BD Srisantitham S Eng VH Shiau A Britt RD Herzik MA Tezcan FA Nitrogenase, FeMoCo, nitrogen, P-cluster, METAL BINDING PROTEIN Narehood SM Cook BD Srisantitham S Eng VH Shiau AA McGuire KL Britt RD Herzik Jr MA Tezcan FA Structural basis for the conformational protection of nitrogenase from O 2 . Nature UK 637 991 997 2025 39779844 doi:10.1038/s41586-024-08311-1 1476-4687 0006 NATUAS 9cu1 FULLOVERLAP EMDB EMD-45925 associated EM volume
Azotobacter vinelandii filamentous 2:2:1 MoFeP:FeP:FeSII-Complex (termini; C1 symmetry)
 Azotobacter vinelandii filamentous 2:2:1 MoFeP:FeP:FeSII-Complex (termini; C1 symmetry) Azotobacter vinelandii filamentous 2:2:1 MoFeP:FeP:FeSII-Complex (termini; C1 symmetry) 0 1 2 3 4 5 Azotobacter vinelandii 0.626 Nitrogenase molybdenum-iron protein alpha chain Azotobacter vinelandii 0.055363042999999994 4 LEVO MTGMSREEVESLIQEVLEVYPEKARKDRNKHLAVNDPAVTQSKKCIISNKKSQPGLMTIRGCAYAGSKGVVWGPIKDMIH ISHGPVGCGQYSRAGRRNYYIGTTGVNAFVTMNFTSDFQEKDIVFGGDKKLAKLIDEVETLFPLNKGISVQSECPIGLIG DDIESVSKVKGAELSKTIVPVRCEGFRGVSQSLGHHIANDAVRDWVLGKRDEDTTFASTPYDVAIIGDYNIGGDAWSSRI LLEEMGLRCVAQWSGDGSISEIELTPKVKLNLVHCYRSMNYISRHMEEKYGIPWMEYNFFGPTKTIESLRAIAAKFDESI QKKCEEVIAKYKPEWEAVVAKYRPRLEGKRVMLYIGGLRPRHVIGAYEDLGMEVVGTGYEFAHNDDYDRTMKEMGDSTLL YDDVTGYEFEEFVKRIKPDLIGSGIKEKFIFQKMGIPFREMHSWDYSGPYHGFDGFAIFARDMDMTLNNPCWKKLQAPWE ASEGAEKVAASA P07328 1.18.6.1 Nitrogenase molybdenum-iron protein beta chain Azotobacter vinelandii 0.059535879 4 LEVO MSQQVDKIKASYPLFLDQDYKDMLAKKRDGFEEKYPQDKIDEVFQWTTTKEYQELNFQREALTVNPAKACQPLGAVLCAL GFEKTMPYVHGSQGCVAYFRSYFNRHFREPVSCVSDSMTEDAAVFGGQQNMKDGLQNCKATYKPDMIAVSTTCMAEVIGD DLNAFINNSKKEGFIPDEFPVPFAHTPSFVGSHVTGWDNMFEGIARYFTLKSMDDKVVGSNKKINIVPGFETYLGNFRVI KRMLSEMGVGYSLLSDPEEVLDTPADGQFRMYAGGTTQEEMKDAPNALNTVLLQPWHLEKTKKFVEGTWKHEVPKLNIPM GLDWTDEFLMKVSEISGQPIPASLTKERGRLVDMMTDSHTWLHGKRFALWGDPDFVMGLVKFLLELGCEPVHILCHNGNK RWKKAVDAILAASPYGKNATVYIGKDLWHLRSLVFTDKPDFMIGNSYGKFIQRDTLHKGKEFEVPLIRIGFPIFDRHHLH RSTTLGYEGAMQILTTLVNSILERLDEETRGMQATDYNHDLVR P07329 1.18.6.1 Nitrogenase iron protein 1 Azotobacter vinelandii 0.03154824 4 LEVO MAMRQCAIYGKGGIGKSTTTQNLVAALAEMGKKVMIVGCDPKADSTRLILHSKAQNTIMEMAAEAGTVEDLELEDVLKAG YGGVKCVESGGPEPGVGCAGRGVITAINFLEEEGAYEDDLDFVFYDVLGDVVCGGFAMPIRENKAQEIYIVCSGEMMAMY AANNISKGIVKYANSGSVRLGGLICNSRNTDREDELIIALANKLGTQMIHFVPRDNVVQRAEIRRMTVIEYDPKAKQADE YRALARKVVDNKLLVIPNPITMDELEELLMEFGIMEVEDESIVGKTAEEV P00459 1.18.6.1 Protein FeSII Azotobacter vinelandii 0.013289329999999999 1 Escherichia coli BL21(DE3) LEVO MATIYFSSPLMPHNKKVQAVAGKRSTLLGVAQENGVKIPFECQDGNCGSCLVKITHLDGERIKGMLLTDKERNVLKSVGK LPKSEEERAAVRDLPPTYRLACQTIVTDEDLLVEFTGEPGGA Q44501 Protein FeSII Azotobacter vinelandii 0.013321373999999999 1 Escherichia coli BL21(DE3) LEVO MATIYFSSPLMPHNKKVQAVAGKRSTKKGVAQENGVKIPFECQDGNCGSCLVKITHLDGERIKGMLLTDKERNVLKSVGK LPKSEEERAAVRDLPPTYRLACQTIVTDEDLLVEFTGEPGGA Q44501 3-HYDROXY-3-CARBOXY-ADIPIC ACID 0.00020615 4 HCA iron-sulfur-molybdenum cluster with interstitial carbon 0.000787451 4 ICS FE(8)-S(7) CLUSTER, OXIDIZED 0.000671215 4 1CL FE (III) ION 5.5845e-05 4 FE ADENOSINE-5'-DIPHOSPHATE 0.000427201 4 ADP MAGNESIUM ION 2.4305e-05 4 MG IRON/SULFUR CLUSTER 0.00035163999999999996 2 SF4 FE2/S2 (INORGANIC) CLUSTER 0.00017581999999999998 2 FES water 1.8015e-05 1076 HOH singleParticle particle 2.5 8.0 20.0 C4H11NO3 Tris 25.0 NaCl Sodium Chloride 5.0 Na2S2O4 Sodium Dithionite 5.0 MgCl2 Magnesium chloride 5.0 C10H16N5O13P3 Adenosine triphosphate Quantifoil COPPER 300 CARBON HOLEY GLOW DISCHARGE ETHANE 75 298.15 SPT LABTECH CHAMELEON
Samples were frozen with the SPT Labtech chameleon.
TFS KRIOS FLOOD BEAM BRIGHT FIELD FIELD EMISSION GUN 300 2.7 0.75 2.5 165000.0 FEI TITAN KRIOS AUTOGRID HOLDER NITROGEN TFS Selectris X 10 FEI FALCON IV (4k x 4k) 4096 4096 3 8049 5.0 60.0 1 866869 cryoSPARC PHASE FLIPPING AND AMPLITUDE CORRECTION
Ab Initio
 1 C1 FOURIER SPACE 2.83 FSC 0.143 CUT-OFF cryoSPARC 30209 MAXIMUM LIKELIHOOD cryoSPARC MAXIMUM LIKELIHOOD cryoSPARC emd_45925.map.gz 1 IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) 512 512 512 0 0 0 512 512 512 563.2 563.2 563.2 90.0 90.0 90.0 X Y Z -0.5362738 1.7041259 0.00026218468 0.026516566 1.1 1.1 1.1 0.221 AUTHOR Sharpened EM map of filamentous 2:2:1 MoFeP:FeP:FeSII complex from Azotobacter vinellandii - Termini (C1 symmetry) 7UT7 PDB experimental model RIGID BODY FIT REAL 29.100000000000001 emd_45925_msk_1.map emd_45925_additional_1.map.gz 1 IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) 512 512 512 0 0 0 512 512 512 563.2 563.2 563.2 90.0 90.0 90.0 X Y Z -0.2772175 1.3768395 0.00026218468 0.017638745 1.1 1.1 1.1 AUTHOR Unsharpened EM map of filamentous 2:2:1 MoFeP:FeP:FeSII complex from Azotobacter vinellandii - Termini (C1 symmetry) emd_45925_half_map_2.map.gz 1 IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) 512 512 512 0 0 0 512 512 512 563.2 563.2 563.2 90.0 90.0 90.0 X Y Z -0.6399049 1.3948073 0.00026073836 0.08882392 1.1 1.1 1.1 AUTHOR Half map A of filamentous 2:2:1 MoFeP:FeP:FeSII complex from Azotobacter vinellandii - Termini (C1 symmetry) emd_45925_half_map_1.map.gz 1 IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) 512 512 512 0 0 0 512 512 512 563.2 563.2 563.2 90.0 90.0 90.0 X Y Z -0.63835365 1.5867001 0.0002393901 0.08867204 1.1 1.1 1.1 AUTHOR Half map B of filamentous 2:2:1 MoFeP:FeP:FeSII complex from Azotobacter vinellandii - Termini (C1 symmetry)