2026-08-26 REL PDBe INITIAL_RELEASE REPOSITORY EXPERIMENTAL_SUMMARY em_admin _em_admin.last_update DATABASE_REFERENCES citation _citation.country _citation.journal_abbrev _citation.journal_id_ASTM _citation.journal_id_CSD _citation.journal_id_ISSN _citation.journal_volume _citation.page_first _citation.page_last _citation.pdbx_database_id_DOI _citation.pdbx_database_id_PubMed _citation.title _citation.year STRUCTURE_SUMMARY computing entity refine _entity.formula_weight STRUCTURE_SUMMARY atom_sites cell entity _atom_sites.fract_transf_matrix[1][1] _atom_sites.fract_transf_matrix[2][1] _atom_sites.fract_transf_matrix[2][2] _atom_sites.fract_transf_matrix[3][2] _atom_sites.fract_transf_matrix[3][3] _cell.Z_PDB _entity.formula_weight STRUCTURE_SUMMARY chem_comp_atom chem_comp_bond database_2 em_admin pdbx_entry_details pdbx_modification_feature _database_2.pdbx_DOI _database_2.pdbx_database_accession _em_admin.last_update REMEDIATION REPOSITORY Metalloprotein remediation STRUCTURE_SUMMARY em_admin pdbx_modification_feature pdbx_nonpoly_atom_coordination pdbx_nonpoly_atom_coordination_sphere pdbx_nonpoly_atom_coordination_sphere_order _em_admin.last_update PDBe PDBe 2017-05-23 2017-06-21 2018-01-17 2026-08-26 Medical Research Council (United Kingdom) U105663141 United Kingdom Medical Research Council (United Kingdom) U105184322 United Kingdom Blaza JN Vinothkumar KR Complex I, redox enzyme, proton pump, membrane protein, oxidoreductase Blaza JN Vinothkumar KR Hirst J Structure UK 26 312 319.e3 2018 29395787 doi:10.1016/j.str.2017.12.014 1878-4186 2005 STRUE6 5o31 FULLOVERLAP EMDB EMD-3731 associated EM volume

Mitochondrial complex I in the deactive state

Mitochondrial complex I in the deactive state Mitochondrial complex I in the deactive state 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 Bos taurus Heart 1.0 NADH-ubiquinone oxidoreductase chain 3 Bos taurus Heart 0.013058521 1 LEVO MNLMLALLTNFTLATLLVIIAFWLPQLNVYSEKTSPYECGFDPMGSARLPFSMKFFLVAITFLLFDLEIALLLPLPWASQ TANLNTMLTMALFLIILLAVSLAYEWTQKGLEWTE P03898 1.6.5.3 NADH dehydrogenase [ubiquinone] iron-sulfur protein 7, mitochondrial Bos taurus heart 0.020104531 1 LEVO PSSTQPAVSQARAVVPKPAALPSSRGEYVVAKLDDLINWARRSSLWPMTFGLACCAVEMMHMAAPRYDMDRFGVVFRASP RQSDVMIVAGTLTNKMAPALRKVYDQMPEPRYVVSMGSCANGGGYYHYSYSVVRGCDRIVPVDIYVPGCPPTAEALLYGI LQLQKKIKREKRLRIWYRR P42026 1.6.5.3 NADH dehydrogenase [ubiquinone] iron-sulfur protein 3, mitochondrial Bos taurus Heart 0.026464807 1 LEVO ESSAADTRPTVRPRNDVAHKQLSAFGEYVAEILPKYVQQVQVSCFNELEICIHPDGVIPVLTFLRDHSNAQFKSLADLTA VDIPTRQNRFEIVYNLLSLRFNSRIRVKTYTDELTPIESSVPVYKAANWYEREIWDMFGVFFANHPDLRRILTDYGFEGH PFRKDFPLSGYVELRYDDEVKRVVAEPVELAQEFRKFDLNSPWEAFPAYRQPPESLKLEAGDTKPEAK P23709 1.6.5.3 NADH dehydrogenase [ubiquinone] iron-sulfur protein 2, mitochondrial Bos taurus heart 0.049236366999999996 1 LEVO ARQWQPDVEWAEQYGGAVMYPTKETAHWKPPPWNDVDPPKDTLVSNLTLNFGPQHPAAHGVLRLVMELSGEMVRKCDPHI GLLHRGTEKLIEYKTYLQALPYFDRLDYVSMMCNEQAYSLAVEKLLNIRPPPRAQWIRVLFGEITRLLNHIMAVTTHALD IGAMTPFFWMFEEREKMFEFYERVSGARMHAAYVRPGGVHQDLPLGLMDDIYEFSKNFSLRIDELEEMLTNNRIWRNRTV DIGIVTAEDALNYGFSGVMLRGSGIQWDLRKTQPYDVYDQVEFDVPIGSRGDCYDRYLCRVEEMRQSIRIISQCLNKMPP GEIKVDDAKVSPPKRAEMKTSMESLIHHFKLYTEGYQVPPGATYTAIEAPKGEFGVYLVSDGSSRPYRCKIKAPGFAHLA GLDKMSKGHMLADVVAIIGTQDIVFGEVDR P17694 1.6.5.3 NADH dehydrogenase [ubiquinone] flavoprotein 2, mitochondrial Bos taurus heart 0.023840361 1 LEVO GAGGALFVHRDTPENNPETPFDFTPENYKRIEAIVKNYPEGHKAAAVLPVLDLAQRQNGWLPISAMNKVAEILQVPPMRV YEVATFYTMYNRKPVGKYHIQVCTTTPCMLRNSDSILEAIQKKLGIKVGETTPDKLFTLIEVECLGACVNAPMVQINDNY YEDLTPKDIEEIIDELKAGKIPKPGPRSGRFSCEPAGGLTSLTEPPKGPGFGVQAGL P04394 1.6.5.3 NADH dehydrogenase [ubiquinone] flavoprotein 1, mitochondrial Bos taurus heart 0.050718777 1 LEVO MLAARRLLGGSLPARVSVRFSGDTTAPKKTSFGSLKDEDRIFTNLYGRHDWRLKGAQSRGDWYKTKEILLKGPDWILGEV KTSGLRGRGGAGFPTGLKWSFMNKPSDGRPKYLVVNADEGEPGTCKDREIIRHDPHKLVEGCLVGGRAMGARAAYIYIRG EFYNEASNLQVAIREAYEAGLIGKNACGSGYDFDVFVVRGAGAYICGEETALIESIEGKQGKPRLKPPFPADVGVFGCPT TVANVETVAVSPTICRRGGAWFASFGRERNSGTKLFNISGHVNNPCTVEEEMSVPLKELIEKHAGGVTGGWDNLLAVIPG GSSTPLIPKSVCETVLMDFDALIQAQTGLGTAAVIVMDRSTDIVKAIARLIEFYKHESCGQCTPCREGVDWMNKVMARFV RGDARPAEIDSLWEISKQIEGHTICALGDGAAWPVQGLIRHFRPELEERMQQFAQQHQARQAAF P25708 1.6.5.3 NADH-ubiquinone oxidoreductase chain 1 Bos taurus Heart 0.035688773 1 LEVO MFMINILMLIIPILLAVAFLTLVERKVLGYMQLRKGPNVVGPYGLLQPIADAIKLFIKEPLRPATSSASMFILAPIMALG LALTMWIPLPMPYPLINMNLGVLFMLAMSSLAVYSILWSGWASNSKYALIGALRAVAQTISYEVTLAIILLSVLLMSGSF TLSTLITTQEQMWLILPAWPLAMMWFISTLAETNRAPFDLTEGESELVSGFNVEYAAGPFALFFMAEYANIIMMNIFTAI LFLGTSHNPHMPELYTINFTIKSLLLTMSFLWIRASYPRFRYDQLMHLLWKNFLPLTLALCMWHVSLPILTSGIPPQT P03887 1.6.5.3 NADH dehydrogenase [ubiquinone] iron-sulfur protein 8, mitochondrial Bos taurus heart 0.020219947 1 LEVO TYKYVNLREPSMDMKSVTDRAAQTLLWTELIRGLGMTLSYLFREPATINYPFEKGPLSPRFRGEHALRRYPSGEERCIAC KLCEAVCPAQAITIEAEPRADGSRRTTRYDIDMTKCIYCGFCQEACPVDAIVEGPNFEFSTETHEELLYNKEKLLNNGDK WEAEIAANIQADYLYR P42028 1.6.5.3 NADH-ubiquinone oxidoreductase chain 6 Bos taurus Heart 0.019082479 1 LEVO MMLYIVFILSVIFVMGFVGFSSKPSPIYGGLGLIVSGGVGCGIVLNFGGSFLGLMVFLIYLGGMMVVFGYTTAMATEQYP EIWLSNKAVLGAFVTGLLMEFFMVYYVLKDKEVEVVFEFNGLGDWVIYDTGDSGFFSEEAMGIAALYSYGTWLVIVTGWS LLIGVVVIMEITRGN P03924 1.6.5.3 NADH-ubiquinone oxidoreductase chain 4L Bos taurus Heart 0.010800186 1 LEVO MSMVYMNIMMAFTVSLVGLLMYRSHLMSSLLCLEGMMLSLFVMAALTILNSHFTLASMMPIILLVFAACEAALGLSLLVM VSNTYGTDYVQNLNLLQC P03902 1.6.5.3 NADH-ubiquinone oxidoreductase chain 5 Bos taurus Heart 0.068327922 1 LEVO MNMFSSLSLVTLLLLTMPIMMMSFNTYKPSNYPLYVKTAISYAFITSMIPTMMFIHSGQELIISNWHWLTIQTLKLSLSF KMDYFSMMFIPVALFVTWSIMEFSMWYMYSDPNINKFFKYLLLFLITMLILVTANNLFQLFIGWEGVGIMSFLLIGWWYG RADANTAALQAILYNRIGDIGFILAMAWFLTNLNTWDLQQIFMLNPSDSNMPLIGLALAATGKSAQFGLHPWLPSAMEGP TPVSALLHSSTMVVAGIFLLIRFYPLTENNKYIQSITLCLGAITTLFTAMCALTQNDIKKIIAFSTSSQLGLMMVTIGIN QPYLAFLHICTHAFFKAMLFMCSGSIIHSLNDEQDIRKMGGLFKAMPFTTTALIVGSLALTGMPFLTGFYSKDLIIEAAN TSYTNAWALLMTLIATSFTAIYSTRIIFFALLGQPRFPTLVNINENNPLLINSIKRLLIGSLFAGYIISNNIPPTTIPQM TMPYYLKTTALIVTILGFILALEISNMTKNLKYHYPSNAFKFSTLLGYFPTIMHRLAPYMNLSMSQKSASSLLDLIWLEA ILPKTISLAQMKASTLVTNQKGLIKLYFLSFLITILISMILFNFHE P03920 1.6.5.3 NADH-ubiquinone oxidoreductase chain 4 Bos taurus Heart 0.05213075 1 LEVO MLKYIIPTIMLMPLTWLSKNNMIWVNSTAHSLLISFTSLLLMNQFGDNSLNFSLLFFSDSLSTPLLILTMWLLPLMLMAS QHHLSKENLTRKKLFITMLISLQLFLIMTFTAMELILFYILFEATLVPTLIIITRWGNQTERLNAGLYFLFYTLAGSLPL LVALIYIQNTVGSLNFLMLQYWVQPVHNSWSNVFMWLACMMAFMVKMPLYGLHLWLPKAHVEAPIAGSMVLAAVLLKLGG YGMLRITLILNPMTDFMAYPFIMLSLWGMIMTSSICLRQTDLKSLIAYSSVSHMALVIVAILIQTPWSYMGATALMIAHG LTSSMLFCLANSNYERIHSRTMILARGLQTLLPLMATWWLLASLTNLALPPTINLIGELFVVMSTFSWSNITIILMGVNM VITALYSLYMLIMTQRGKYTYHINNISPSFTRENALMSLHILPLLLLTLNPKIILGPLY P03910 1.6.5.3 NADH-ubiquinone oxidoreductase chain 2 Bos taurus Heart 0.03927493 1 LEVO MNPIIFIIILLTIMLGTIIVMISSHWLLVWIGFEMNMLAIIPIMMKNHNPRATEASTKYFLTQSTASMLLMMAVIINLMF SGQWTVMKLFNPMASMLMTMALAMKLGMAPFHFWVPEVTQGIPLSSGLILLTWQKLAPMSVLYQIFPSINLNLILTLSVL SILIGGWGGLNQTQLRKIMAYSSIAHMGWMTAVLPYNPTMTLLNLIIYIIMTSTMFTMFMANSTTTTLSLSHTWNKTPIM TVLILATLLSMGGLPPLSGFMPKWMIIQEMTKNNSIILPTFMAITALLNLYFYMRLTYSTTLTMFPSTNNMKMKWQFPLM KKMTFLPTMVVLSTMMLPLTPMLSVLE P03892 1.6.5.3 NADH dehydrogenase [ubiquinone] 1 alpha subcomplex subunit 10, mitochondrial Bos taurus heart 0.036739733999999996 1 LEVO LQYGPLAYILGEKATKKMTEKSKLITVDGNICSGKSKLAKEIAEKLGLKHFPEAGIHYVDSTTGDGKPLPVQFSGNCSLE KFYDDPKSNDGNSYRLQAWLYASRLLQYADALEHLLSTGQGVVLERSIYSDFVFLEAMYRQGFIRKQCVDHYNQVKKVTI CEYLPPHVVVYVDVPVPEVQSRIQKKGNPHEMKITSAYLQDIENAYKGTFLPEMSEKCEVLQYSAWEAQDAEKVVEDIEY LKYDKGPWLDQNDRNLHKLRMLVQDKLEVLNYTSIPVFLPEVTVGAHQSDQVFQEFTELPGRKYRAGYNEDVGDKWIWLK P34942 NADH dehydrogenase [ubiquinone] 1 alpha subcomplex subunit 9 Bos taurus 0.025294037 1 LEVO (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) NADH dehydrogenase [ubiquinone] 1 alpha subcomplex subunit 2 Bos taurus 0.010966627 1 LEVO AAAAAIRGVRGKLGLREIRIHLCQRSPGSQGVRDFIEKRYVELKKANPDLPILIRECSDVQPKLWARYAFGQEKNVSLNN FSADQVTRALENVLSSKA Q02370 Acyl carrier protein, mitochondrial Bos taurus 0.010119541 2 LEVO SDAPPLTLEGIKDRVLYVLKLYDKIDPEKLSVNSHFMKDLGLDSLDQVEIIMAMEDEFGFEIPDIDAEKLMCPQEIVDYI ADKKDVYE P52505 NADH dehydrogenase [ubiquinone] 1 alpha subcomplex subunit 5 Bos taurus 0.013203414 1 LEVO AGLLKKTTGLVGLAVCETPHERLKILYTKILDVLGHIPKNAAYRKYTEQITNEKLSMVKAEPDVKKLEERLQGGQIEEVI LQAENELSLARKMIQWKPWEPLVEEPPASQWKWPI P23935 NADH dehydrogenase [ubiquinone] 1 alpha subcomplex subunit 6 Bos taurus 0.015083543999999999 1 LEVO MAASGLRQAAVAASTSVKPIFSRDMNEAKRRVRELYRAWYREVPNTVHLFQLDISVKQGRDKVREMFKKNAHITDPRVVD LLVIKGKMELEETIKVWKQRTHVMRFFHETEAPRPKDFLSKFYVGHDP Q02366 NADH dehydrogenase [ubiquinone] 1 alpha subcomplex subunit 11 Bos taurus 0.014772021 1 LEVO MAKTVLRQYWDIPEGTECHRKTYATTSIGGAAGLVVSAYSVALKTPTSFLEGVARTGRYTFTAAAIGAIFGLTSCISAQV REKPDDPLNYLIGGCAGGLILGARTRSYGIGAAACAYMGLTAALVKMGQLEGWQVFAEPKV Q8HXG6 NADH dehydrogenase [ubiquinone] 1 alpha subcomplex subunit 1 Bos taurus 0.008117445 1 LEVO MWFEVLPGIAVMGVCLFIPGMATARIHRFSNGGKEKRVAHYPYQWYLMERDRRVSGVNRSYVSKGLENID Q02377 NADH dehydrogenase [ubiquinone] 1 alpha subcomplex subunit 3,NADH dehydrogenase [ubiquinone] 1 alpha subcomplex subunit 3 Bos taurus 0.007860488 1 LEVO AERVAAFLKNVWAKEPVLVASFAIAGLAVILPTLSPYTKYSLMIN(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) Q02371 NADH dehydrogenase [ubiquinone] 1 subunit C1, mitochondrial Bos taurus 0.005836698 1 LEVO KFYIQEPPHGSPNWLKVGLTLGTSVFLWIYLIKQHNEDVLEYKRRNGLE Q02376 NADH dehydrogenase [ubiquinone] iron-sulfur protein 5 Bos taurus 0.012491347 1 LEVO PFFDVQKRLGVDLDRWMTIQSAEQPHGIPSRCHAFEKEWIECAHGIGSIRAEKECKIEFEDFRECLLRQKTMKRLHAIRR QREKLIKEGKYTPPPHHSGQEEPRS Q02379 NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 1 Bos taurus 0.006978148 1 LEVO MNLLQVVRDHWVHVLVPMGFVFGYYLDRKNDEKLTAFRNKSLLYKRELKPNEEVTWK Q02378 NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 11, mitochondrial Bos taurus 0.014469059 1 LEVO ESSSSRAVIAPSTLAGKRPSEPTLRWQEDPEPEDENLYEKNPDSHGYDKDPAVDIWNMRVVFFFGFSIVLVLGSTFVAYL PDYRMQEWARREAERLVKYREAHGLPIMESNCFDPSKIQLPEDED Q8HXG5 NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 6,NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 6 Bos taurus 0.010739855 1 LEVO SGYTPEEKLRLQQLRELRRRWLKDQELSPREP(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK) Q02367 NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 2 Bos taurus 0.004443468 1 LEVO (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK) NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 3 Bos taurus 0.006315777 1 LEVO (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 8 Bos taurus 0.010230602999999998 1 LEVO (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 7 Bos taurus 0.016297648999999997 1 LEVO GAHLARRYLGDASVEPDPLRMPTFPPDYGFPERKEREMVATQQEMNDAQLVLQQRDYCAHYLIRFLKCKRDSFPNFLACK HERHDWDYCEHLDYVKRMKEFERERRLLQRKKRREQREADMAKGLGPGEVAPEVAL Q02368 NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 10,NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 10,NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 10 Bos taurus 0.016906949 1 LEVO (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)CQEKDVLCMFEAEMQWRRDYKVDQEIVNIIQERLKACQQR EGESHRQNCAKELEQFTQVVKAYQDRY(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK) Q02373 NADH dehydrogenase [ubiquinone] 1 alpha subcomplex subunit 12 Bos taurus Heart 0.017115508 1 LEVO MELLQVLKRGLQQVSGHGGLRGYLRVLFRANDVRVGTLVGEDKYGNKYYEDNKQFFGRHRWVIYTTEMNGKNTFWDVDGS MVPPEWHRWLHCMTDDPPTVKPPTARKFIWTNHKFNLSGTPQQYVPYSTTRKKIQEWVPPSTPYK O97725 NADH-ubiquinone oxidoreductase 75 kDa subunit, mitochondrial Bos taurus heart 0.07704407799999999 1 LEVO TATAASNLIEVFVDGQSVMVEPGTTVLQACEKVGMQIPRFCYHERLSVAGNCRMCLVEIEKAPKVVAACAMPVMKGWNIL TNSEKTKKAREGVMEFLLANHPLDCPICDQGGECDLQDQSMMFGSDRSRFLEGKRAVEDKNIGPLVKTIMTRCIQCTRCI RFASEIAGVDDLGTTGRGNDMQVGTYIEKMFMSELSGNIIDICPVGALTSKPYAFTARPWETRKTESIDVMDAVGSNIVV STRTGEVMRILPRMHEDINEEWISDKTRFAYDGLKRQRLTEPMVRNEKGLLTHTTWEDALSRVAGMLQSFQGNDVAAIAG GLVDAEALIALKDLLNRVDSDTLCTEEVFPTAGAGTDLRSNYLLNTTIAGVEEADVVLLVGTNPRFEAPLFNARIRKSWL HNDLKVALIGSPVDLTYRYDHLGDSPKILQDIASGSHPFSQVLQEAKKPMVILGSSALQRNDGAAILAAVSNIAQKIRTS SGVTGDWKVMNILHRIASQVAALDLGYKPGVEAIQKNPPKMLFLLGADGGCITRQDLPKDCFIVYQGHHGDVGAPIADVI LPGAAYTEKSATYVNTEGRAQQTKVAVTPPGLAREDWKIIRALSEIAGMTLPYDTLDQVRNRLEEVSPNLVRYDDVEGAN YFQQASELSKLVNQQLLADPLVPPQLTIKDFYMTDSISRASQTMAKCVKAVTEGAHAVEEPSIC P15690 1.6.5.3 NADH dehydrogenase [ubiquinone] flavoprotein 3, mitochondrial Bos taurus 0.008451367 1 LEVO SAESGKNEKGLPPNPKKQSPPKKPVSAAPTEPFDNTTYKNLQHHDYSTYTFLDLNLDLSKFRMPQPSSGRESPRH P25712 NADH dehydrogenase [ubiquinone] iron-sulfur protein 4, mitochondrial Bos taurus 0.015361272 1 LEVO AQDQTRDTQLITVDEKLDITTITGVPEEHIKTRKARIFVPARNNMQSGVNNTKKWKMEFDTRERWENPLMGWASTADPLS NLVLTFSTKEDAVAFAEKNGWSYDVEERKVPKPKSKSYGANFSWNKRTRVSTK Q02375 NADH dehydrogenase [ubiquinone] iron-sulfur protein 6, mitochondrial Bos taurus 0.010551719999999999 1 LEVO GVRTSPTGEKVTHTGQVYDDGDYRKVRFVGRQKEVNENFAIDLIAEQPVSQVGSRVISCDGGGGALGHPRVYINLDKETK TGTCGYCGLQFRQQHH P23934 NADH dehydrogenase [ubiquinone] 1 alpha subcomplex subunit 7 Bos taurus 0.012564387 1 LEVO ASATRFIQWLRNWASGRDLQAKLQLRYQEISKRTQPPPKLPVGPSHKLSNNYYCTRDGRREAMPPSIVMSSQKVLVAGKP AESSAVAASEKKAVSPAPPIKRWELSQDEPYL Q05752 NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 5, mitochondrial Bos taurus 0.016752357 1 LEVO SGDHGKRLFIIKPSGFYDKRFLKLLRFYILLTGIPVAIGITLINVFIGEAELAEIPEGYVPEHWEYFKHPISRWIARTFF DGPEKNYERTMAILQIEAEKAELRLKELEVRRLMRARGDGPWFHYPTIDKELIDHSPKATPDN Q02380 NADH dehydrogenase [ubiquinone] 1 subunit C2,NADH dehydrogenase [ubiquinone] 1 subunit C2 Bos taurus 0.012923203999999999 1 LEVO MMTGRQGRATFQFLPDEARSLPPPKLTDPRLAFVGFLGYCSGLIDNAIRRRPVLLAGLHRQLLYITSFVFVGYYLLKRQD YMYAVRDHDMFSYIKSH(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) Q02827 NADH dehydrogenase [ubiquinone] 1 alpha subcomplex subunit 8 Bos taurus 0.019992936 1 LEVO PGIVELPSLEDLKVQEVKVSSSVLKAAAHHYGAQCDKPNKEFMLCRWEEKDPRRCLEEGKLVNQCALEFFRQIKRHCAEP FTEYWTCIDYSGLQLFRRCRKQQAQFDECVLDKLGWVRPDLGDLSKVTKVKTDRPLPENPYHSRARPEPNPEVEGDLKPA RHGSRLFFWTM P42029 NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 4 Bos taurus 0.015075063 1 LEVO SFPKYEASRLSSLPTTLDPAEYDISSETRKAQAERLAIRSRLKREYQLQYYDPSRRGVIEDPALVRWTYARSANIYPNFR PNTKTSLLGALFGIGPLVFWYYVFKTDRDRKEKLIQEGKLDRTFNISY P48305 NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 9 Bos taurus 0.021696693 1 LEVO AFLSSGAYLTHQQKVLRLYKRALRHLESWCIHRDKYRYFACLLRARFDEHKNEKDMVKATQLLREAEEEFWHGQHPQPYI FPESPGGTSYERYECYKVPEWCLDDWHPSEKAMYPDYFAKREQWKKLRRESWEREVKQLQEETPVGGPRTEALPPARKQG DLPPLWWHIVTRPRERPM Q02369 NADH dehydrogenase [ubiquinone] 1 alpha subcomplex subunit 13,NADH dehydrogenase [ubiquinone] 1 alpha subcomplex subunit 13 Bos taurus 0.015369262 1 LEVO MAASKVKQDMPPVGGYGPIDYKRNLPRRGLSGYSMFAVGIGALLFGYWSMMKWNRERRRLQIEDFEARIALMPLLQAEKD RRVLQMLRENLEEEATVMK(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK) Q95KV7 IRON/SULFUR CLUSTER 0.00035163999999999996 6 SF4 FE2/S2 (INORGANIC) CLUSTER 0.00017581999999999998 2 FES FLAVIN MONONUCLEOTIDE 0.00045634399999999997 1 FMN NADP NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE 0.0007434049999999999 1 NAP ZINC ION 6.5409e-05 1 ZN singleParticle particle 4 7.55 20.0 Tris-Cl 150.0 NaCl 0.04 Cymal-7 Quantifoil UltrAuFoil R0.6/1 GOLD

The grid was PEGylated before use

ETHANE 100 277 FEI VITROBOT MARK IV

Monodisperse bovine mitochondrial complex I isolated in the detergent cymal-7

FEI TITAN KRIOS FLOOD BEAM BRIGHT FIELD FIELD EMISSION GUN 300 100.0 2.7 1.3 3.1 59000.0 101499.0 FEI TITAN KRIOS AUTOGRID HOLDER NITROGEN FEI FALCON II (4k x 4k) INTEGRATING 4096 4096 1-20 1 2954 2.5 80.0 1

Images were normalised in Relion

148488 CTFFIND 4

CTF correction was done per particle after the CTF was estimated on the whole micrograph.

PHASE FLIPPING AND AMPLITUDE CORRECTION EMD-2676

Filtred to 60 A

C1 4.13 FSC 0.143 CUT-OFF RELION 1.4 125006 NOT APPLICABLE PROJECTION MATCHING RELION 1.4

Relion uses projection matching in a ML statistical framework

3 RELION 1.4

Running with 6 classes gave very similar results.

FLEXIBLE FIT RECIPROCAL 78.700000000000003