8ZSN image
Deposition Date 2024-06-05
Release Date 2025-11-19
Last Version Date 2025-11-19
Entry Detail
PDB ID:
8ZSN
Keywords:
MEMBRANE PROTEIN
Title:
Respirasome closed state 1 in the absence of biguanide (SC-ApoC)
Biological Source:
Source Organism:
Sus scrofa (Taxon ID: 9823)
Method Details:
Experimental Method:
ELECTRON MICROSCOPY
Resolution:
2.88 Å
Aggregation State:
PARTICLE
Reconstruction Method:
SINGLE PARTICLE
8ZSN validation report
Macromolecular Entities
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH-ubiquinone oxidoreductase chain 4L
Gene (Uniprot):MT-ND4L
Chain IDs:A (auth: 4L)
Chain Length:98
Number of Molecules:1
Biological Source:Sus scrofa
UniProt ID:P56632 Pfam ID:PF00420
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Cytochrome c oxidase subunit 5A, mitochondrial
Gene (Uniprot):COX5A
Chain IDs:B (auth: 5A)
Chain Length:102
Number of Molecules:1
Biological Source:Sus scrofa
UniProt ID:F1SJ34 Pfam ID:PF02284
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Cytochrome c oxidase subunit 5B, mitochondrial
Gene (Uniprot):COX5B
Chain IDs:C (auth: 5B)
Chain Length:95
Number of Molecules:1
Biological Source:Sus scrofa
UniProt ID:Q5S3G4 Pfam ID:PF01215
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Cytochrome c oxidase subunit
Gene (Uniprot):COX6A2
Chain IDs:D (auth: 6A)
Chain Length:75
Number of Molecules:1
Biological Source:Sus scrofa
UniProt ID:A0A287AEB7 Pfam ID:PF02046
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Cytochrome c oxidase subunit
Gene (Uniprot):COX6B
Chain IDs:E (auth: 6B)
Chain Length:82
Number of Molecules:1
Biological Source:Sus scrofa
UniProt ID:A0A4X1TG97 Pfam ID:PF02297
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Cytochrome c oxidase subunit 6C
Gene (Uniprot):COX6C
Chain IDs:F (auth: 6C)
Chain Length:70
Number of Molecules:1
Biological Source:Sus scrofa
UniProt ID:A0A4X1TXH1 Pfam ID:PF02937
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Cytochrome c oxidase subunit 7A1, mitochondrial
Gene (Uniprot):COX7A1
Chain IDs:G (auth: 7A)
Chain Length:57
Number of Molecules:1
Biological Source:Sus scrofa
UniProt ID:Q8SPJ9 Pfam ID:PF02238
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Cytochrome c oxidase subunit 7B, mitochondrial
Gene (Uniprot):COX7B
Chain IDs:H (auth: 7B)
Chain Length:50
Number of Molecules:1
Biological Source:Sus scrofa
UniProt ID:A0A287BJ57 Pfam ID:PF05392
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Cytochrome c oxidase subunit 7C, mitochondrial
Gene (Uniprot):COX7C
Chain IDs:I (auth: 7C)
Chain Length:47
Number of Molecules:1
Biological Source:Sus scrofa
UniProt ID:Q1W0Y2 Pfam ID:PF02935
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Cytochrome c oxidase subunit 8
Gene (Uniprot):COX8H
Chain IDs:J (auth: 8B)
Chain Length:43
Number of Molecules:1
Biological Source:Sus scrofa
UniProt ID:A0A4X1VY94 Pfam ID:PF02285
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH dehydrogenase [ubiquinone] 1 alpha subcomplex subunit 1
Gene (Uniprot):NDUFA1
Chain IDs:K (auth: A1)
Chain Length:70
Number of Molecules:1
Biological Source:Sus scrofa
UniProt ID:K7GR43 Pfam ID:PF15879
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH dehydrogenase [ubiquinone] 1 alpha subcomplex subunit 2
Gene (Uniprot):NDUFA2
Chain IDs:L (auth: A2)
Chain Length:85
Number of Molecules:1
Biological Source:Sus scrofa
UniProt ID:F1RGE3 Pfam ID:PF05047
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH dehydrogenase [ubiquinone] 1 alpha subcomplex subunit 3
Gene (Uniprot):NDUFA3
Chain IDs:M (auth: A3)
Chain Length:83
Number of Molecules:1
Biological Source:Sus scrofa
UniProt ID:A0A4X1VPG4 Pfam ID:PF14987
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH dehydrogenase [ubiquinone] 1 alpha subcomplex subunit 5
Chain IDs:N (auth: A5)
Chain Length:112
Number of Molecules:1
Biological Source:Sus scrofa
UniProt ID:A0A8D0UWW0 Pfam ID:PF04716
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH dehydrogenase [ubiquinone] 1 alpha subcomplex subunit 6
Gene (Uniprot):NDUFA6
Chain IDs:O (auth: A6)
Chain Length:114
Number of Molecules:1
Biological Source:Sus scrofa
UniProt ID:F1SJP6 Pfam ID:PF05347
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH dehydrogenase [ubiquinone] 1 alpha subcomplex subunit 7
Gene (Uniprot):NDUFA7
Chain IDs:P (auth: A7)
Chain Length:112
Number of Molecules:1
Biological Source:Sus scrofa
UniProt ID:A0A4X1VLA2 Pfam ID:PF07347
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH dehydrogenase [ubiquinone] 1 alpha subcomplex subunit 8
Gene (Uniprot):NDUFA8
Chain IDs:Q (auth: A8)
Chain Length:171
Number of Molecules:1
Biological Source:Sus scrofa
UniProt ID:F1SLR1 Pfam ID:PF06747
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH dehydrogenase [ubiquinone] 1 alpha subcomplex subunit 9, mitochondrial
Gene (Uniprot):NDUFA9
Chain IDs:R (auth: A9)
Chain Length:341
Number of Molecules:1
Biological Source:Sus scrofa
UniProt ID:F1SL07 Pfam ID:PF01370
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Acyl carrier protein
Gene (Uniprot):NDUFAB1
Chain IDs:S (auth: AB), T (auth: AC)
Chain Length:87
Number of Molecules:2
Biological Source:Sus scrofa
UniProt ID:A0A287AAR5 Pfam ID:PF00550
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH dehydrogenase [ubiquinone] 1 alpha subcomplex subunit 10, mitochondrial
Gene (Uniprot):NDUFA10
Chain IDs:U (auth: AK)
Chain Length:321
Number of Molecules:1
Biological Source:Sus scrofa
UniProt ID:F1SIS9 Pfam ID:PF01712
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH dehydrogenase [ubiquinone] 1 alpha subcomplex subunit 11
Gene (Uniprot):NDUFA11
Chain IDs:V (auth: AL)
Chain Length:140
Number of Molecules:1
Biological Source:Sus scrofa
UniProt ID:I3LGM4 Pfam ID:PF02466
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH dehydrogenase [ubiquinone] 1 alpha subcomplex subunit 12
Gene (Uniprot):NDUFA12
Chain IDs:W (auth: AM)
Chain Length:144
Number of Molecules:1
Biological Source:Sus scrofa
UniProt ID:F1SQP4 Pfam ID:PF05071
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH dehydrogenase [ubiquinone] 1 alpha subcomplex subunit 13
Gene (Uniprot):NDUFA13
Chain IDs:X (auth: AN)
Chain Length:142
Number of Molecules:1
Biological Source:Sus scrofa
UniProt ID:A0A8D1NRT6 Pfam ID:PF06212
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 1
Gene (Uniprot):NDUFB1
Chain IDs:Y (auth: B1)
Chain Length:56
Number of Molecules:1
Biological Source:Sus scrofa
UniProt ID:A0A8D2CGH8 Pfam ID:PF08040
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 2, mitochondrial
Gene (Uniprot):NDUFB2
Chain IDs:Z (auth: B2)
Chain Length:67
Number of Molecules:1
Biological Source:Sus scrofa
UniProt ID:A0A5G2QW32 Pfam ID:PF14813
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 3
Gene (Uniprot):NDUFB3
Chain IDs:AA (auth: B3)
Chain Length:80
Number of Molecules:1
Biological Source:Sus scrofa
UniProt ID:A0A4X1VD84 Pfam ID:PF08122
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 4
Gene (Uniprot):NDUFB4
Chain IDs:BA (auth: B4)
Chain Length:128
Number of Molecules:1
Biological Source:Sus scrofa
UniProt ID:A0A4X1T6M0 Pfam ID:PF07225
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 5, mitochondrial
Gene (Uniprot):NDUFB5
Chain IDs:CA (auth: B5)
Chain Length:138
Number of Molecules:1
Biological Source:Sus scrofa
UniProt ID:F1SGC6 Pfam ID:PF09781
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 6
Gene (Uniprot):NDUFB6
Chain IDs:DA (auth: B6)
Chain Length:126
Number of Molecules:1
Biological Source:Sus scrofa
UniProt ID:A0A480KM09 Pfam ID:PF09782
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 7
Gene (Uniprot):NDUFB7
Chain IDs:EA (auth: B7)
Chain Length:125
Number of Molecules:1
Biological Source:Sus scrofa
UniProt ID:F1SCH1 Pfam ID:PF05676
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 8, mitochondrial
Gene (Uniprot):NDUFB8
Chain IDs:FA (auth: B8)
Chain Length:156
Number of Molecules:1
Biological Source:Sus scrofa
UniProt ID:F1RWL7 Pfam ID:PF05821
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 9
Gene (Uniprot):NDUFB9
Chain IDs:GA (auth: B9)
Chain Length:178
Number of Molecules:1
Biological Source:Sus scrofa
UniProt ID:K7GSE5 Pfam ID:PF05347
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 10
Gene (Uniprot):NDUFB10
Chain IDs:HA (auth: BK)
Chain Length:174
Number of Molecules:1
Biological Source:Sus scrofa
UniProt ID:A0A8D1FAG1 Pfam ID:PF10249
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 11, mitochondrial
Chain IDs:IA (auth: BL)
Chain Length:99
Number of Molecules:1
Biological Source:Sus scrofa
UniProt ID:A0A8D1EYI7 Pfam ID:PF10183
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Cytochrome c oxidase subunit 1
Gene (Uniprot):MT-CO1
Chain IDs:JA (auth: C1)
Chain Length:514
Number of Molecules:1
Biological Source:Sus scrofa
UniProt ID:O79876 Pfam ID:PF00115
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Cytochrome c oxidase subunit 2
Gene (Uniprot):MT-CO2
Chain IDs:KA (auth: C2)
Chain Length:228
Number of Molecules:1
Biological Source:Sus scrofa
UniProt ID:P50667 Pfam ID:PF02790, PF00116
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Cytochrome c oxidase subunit 3
Gene (Uniprot):MT-CO3
Chain IDs:LA (auth: C3)
Chain Length:260
Number of Molecules:1
Biological Source:Sus scrofa
UniProt ID:Q35916 Pfam ID:PF00510
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Cytochrome c oxidase subunit 4
Gene (Uniprot):LOC100624067
Chain IDs:MA (auth: C4)
Chain Length:138
Number of Molecules:1
Biological Source:Sus scrofa
UniProt ID:A0A4X1T8J9 Pfam ID:PF02936
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH dehydrogenase [ubiquinone] 1 subunit C1, mitochondrial
Gene (Uniprot):NDUFC1
Chain IDs:NA (auth: CA)
Chain Length:49
Number of Molecules:1
Biological Source:Sus scrofa
UniProt ID:A1XQS6 Pfam ID:PF15088
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH dehydrogenase [ubiquinone] 1 subunit C2
Gene (Uniprot):NDUFC2
Chain IDs:OA (auth: CB)
Chain Length:121
Number of Molecules:1
Biological Source:Sus scrofa
UniProt ID:A0A480JRW3 Pfam ID:PF06374
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH-ubiquinone oxidoreductase chain 1
Gene (Uniprot):MT-ND1
Chain IDs:PA (auth: N1)
Chain Length:318
Number of Molecules:1
Biological Source:Sus scrofa
UniProt ID:O79874 Pfam ID:PF00146
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH-ubiquinone oxidoreductase chain 2
Gene (Uniprot):MT-ND2
Chain IDs:QA (auth: N2)
Chain Length:347
Number of Molecules:1
Biological Source:Sus scrofa
UniProt ID:O79875 Pfam ID:PF00361, PF06444
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH-ubiquinone oxidoreductase chain 3
Gene (Uniprot):MT-ND3
Chain IDs:RA (auth: N3)
Chain Length:115
Number of Molecules:1
Biological Source:Sus scrofa
UniProt ID:O79880 Pfam ID:PF00507
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH-ubiquinone oxidoreductase chain 4
Gene (Uniprot):NADH4
Chain IDs:SA (auth: N4)
Chain Length:459
Number of Molecules:1
Biological Source:Sus scrofa
UniProt ID:Q7IIB7 Pfam ID:PF01059, PF00361
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH-ubiquinone oxidoreductase chain 5
Gene (Uniprot):NADH5
Chain IDs:TA (auth: N5)
Chain Length:603
Number of Molecules:1
Biological Source:Sus scrofa
UniProt ID:Q71K68 Pfam ID:PF00662, PF00361, PF06455
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH-ubiquinone oxidoreductase chain 6
Gene (Uniprot):MT-ND6
Chain IDs:UA (auth: N6)
Chain Length:174
Number of Molecules:1
Biological Source:Sus scrofa
UniProt ID:O79882 Pfam ID:PF00499
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Cytochrome b-c1 complex subunit 2, mitochondrial
Gene (Uniprot):UQCRC2
Chain IDs:VA (auth: QA), GB (auth: Qa)
Chain Length:419
Number of Molecules:2
Biological Source:Sus scrofa
UniProt ID:F1RPD2 Pfam ID:PF00675, PF05193
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Cytochrome b-c1 complex subunit 1, mitochondrial
Gene (Uniprot):LOC100156879
Chain IDs:WA (auth: QB), HB (auth: Qb)
Chain Length:446
Number of Molecules:2
Biological Source:Sus scrofa
UniProt ID:A0A8D0PK14 Pfam ID:PF00675, PF05193
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Cytochrome b
Gene (Uniprot):cytb
Chain IDs:XA (auth: QC), IB (auth: Qc)
Chain Length:379
Number of Molecules:2
Biological Source:Sus scrofa
UniProt ID:Q1HBG9 Pfam ID:PF00033, PF00032
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Cytochrome c1, heme protein, mitochondrial
Gene (Uniprot):LOC100525869
Chain IDs:YA (auth: QD), JB (auth: Qd)
Chain Length:241
Number of Molecules:2
Biological Source:Sus scrofa
UniProt ID:A0A4X1UNI7 Pfam ID:PF02167
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Cytochrome b-c1 complex subunit Rieske, mitochondrial
Gene (Uniprot):LOC100522678
Chain IDs:ZA (auth: QE), KB (auth: Qe)
Chain Length:196
Number of Molecules:2
Biological Source:Sus scrofa
UniProt ID:A0A4X1TWD8 Pfam ID:PF02921, PF00355, PF09165
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Cytochrome b-c1 complex subunit 6
Gene (Uniprot):UQCRH
Chain IDs:AB (auth: QF), LB (auth: Qf)
Chain Length:67
Number of Molecules:2
Biological Source:Sus scrofa
UniProt ID:F1S3W0 Pfam ID:PF02320
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Cytochrome b-c1 complex subunit 7
Gene (Uniprot):UQCRB
Chain IDs:BB (auth: QG), MB (auth: Qg)
Chain Length:101
Number of Molecules:2
Biological Source:Sus scrofa
UniProt ID:A0A4X1U2M7 Pfam ID:PF02271
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Cytochrome b-c1 complex subunit 8
Gene (Uniprot):UQCRQ
Chain IDs:CB (auth: QH), NB (auth: Qh)
Chain Length:79
Number of Molecules:2
Biological Source:Sus scrofa
UniProt ID:A0A4X1UYT9 Pfam ID:PF02939
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Complex III subunit 9
Gene (Uniprot):UQCR10
Chain IDs:DB (auth: QI), OB (auth: Qi)
Chain Length:62
Number of Molecules:2
Biological Source:Sus scrofa
UniProt ID:Q2EN79 Pfam ID:PF05365
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Cytochrome b-c1 complex subunit 10
Gene (Uniprot):UQCR11
Chain IDs:EB (auth: QJ), PB (auth: Qj)
Chain Length:52
Number of Molecules:2
Biological Source:Sus scrofa
UniProt ID:A0A4X1VTU3 Pfam ID:PF08997
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Cytochrome b-c1 complex subunit Rieske, mitochondrial
Gene (Uniprot):LOC100522678
Chain IDs:FB (auth: QK)
Chain Length:78
Number of Molecules:1
Biological Source:Sus scrofa
UniProt ID:A0A4X1TWD8 Pfam ID:PF02921, PF00355, PF09165
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH-ubiquinone oxidoreductase 75 kDa subunit, mitochondrial
Gene (Uniprot):NDUFS1
Chain IDs:QB (auth: S1)
Chain Length:689
Number of Molecules:1
Biological Source:Sus scrofa
UniProt ID:A0A4X1V1H9 Pfam ID:PF13510, PF10588, PF22117, PF22151, PF00384, PF09326
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH dehydrogenase [ubiquinone] iron-sulfur protein 2, mitochondrial
Gene (Uniprot):NDUFS2
Chain IDs:RB (auth: S2)
Chain Length:430
Number of Molecules:1
Biological Source:Sus scrofa
UniProt ID:F1S1A8 Pfam ID:PF00346
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Complex I-30kD
Gene (Uniprot):NDUFS3
Chain IDs:SB (auth: S3)
Chain Length:208
Number of Molecules:1
Biological Source:Sus scrofa
UniProt ID:A0A286ZNN4 Pfam ID:PF00329
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH dehydrogenase [ubiquinone] iron-sulfur protein 4, mitochondrial
Gene (Uniprot):NDUFS4
Chain IDs:TB (auth: S4)
Chain Length:124
Number of Molecules:1
Biological Source:Sus scrofa
UniProt ID:A0A4X1SN37 Pfam ID:PF04800
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH dehydrogenase [ubiquinone] iron-sulfur protein 5
Gene (Uniprot):NDUFS5
Chain IDs:UB (auth: S5)
Chain Length:105
Number of Molecules:1
Biological Source:Sus scrofa
UniProt ID:F1SV23 Pfam ID:PF10200
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH dehydrogenase [ubiquinone] iron-sulfur protein 6, mitochondrial
Gene (Uniprot):NDUFS6
Chain IDs:VB (auth: S6)
Chain Length:96
Number of Molecules:1
Biological Source:Sus scrofa
UniProt ID:F1S031 Pfam ID:PF10276
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH dehydrogenase [ubiquinone] iron-sulfur protein 7, mitochondrial
Gene (Uniprot):NDUFS7
Chain IDs:WB (auth: S7)
Chain Length:156
Number of Molecules:1
Biological Source:Sus scrofa
UniProt ID:A0A8D1TL60 Pfam ID:PF01058
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH dehydrogenase [ubiquinone] iron-sulfur protein 8, mitochondrial
Gene (Uniprot):NDUFS8
Chain IDs:XB (auth: S8)
Chain Length:176
Number of Molecules:1
Biological Source:Sus scrofa
UniProt ID:A0A287BDC0 Pfam ID:PF12838
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH dehydrogenase [ubiquinone] flavoprotein 1, mitochondrial
Gene (Uniprot):NDUFV1
Chain IDs:YB (auth: V1)
Chain Length:431
Number of Molecules:1
Biological Source:Sus scrofa
UniProt ID:A0A4X1SZP7 Pfam ID:PF01512, PF22461, PF10589
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH dehydrogenase [ubiquinone] flavoprotein 2, mitochondrial
Gene (Uniprot):NDUFV2
Chain IDs:ZB (auth: V2)
Chain Length:217
Number of Molecules:1
Biological Source:Sus scrofa
UniProt ID:A0A287BG40 Pfam ID:PF01257
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH:ubiquinone oxidoreductase subunit V3
Gene (Uniprot):NDUFV3
Chain IDs:AC (auth: V3)
Chain Length:42
Number of Molecules:1
Biological Source:Sus scrofa
UniProt ID:A0A287BEK4 Pfam ID:PF15880
Modified Residue
Compound ID Chain ID Parent Comp ID Details 2D Image
2MR RB ARG modified residue
Ligand Molecules
3PE
ADP
CDL
CU
FES
FMN
HEA
HEC
HEM
MG
NDP
PC1
PEE
PLX
SF4
ZMP
ZN
Primary Citation
Hydrophilic metformin and hydrophobic biguanides inhibit mitochondrial complex I by distinct mechanisms.
Nat.Struct.Mol.Biol. ? ? ? (2025)
PMID: 41214295 DOI: 10.1038/s41594-025-01710-6

Abstact

Metformin is the only antihyperglycemic biguanide targeting type 2 diabetes mellitus with proven safety. Although a mechanism of action involving tight inhibition of the respiratory complex I has been proposed for hydrophobic biguanides, it remains elusive for the hydrophilic metformin, whose excellent pharmacological tolerance depends on weak complex I inhibition without competitive nature. Here we solved cryo-electron microscopy structures of the metformin-bound porcine respirasome. Our structural and kinetic data are consistent with a model in which metformin enters complex I only in its open state and becomes trapped at the ubiquinone redox site by ubiquinone-induced conformational closing of the enzyme. By contrast, the hydrophobic proguanil alone occupies both the entrance and the redox site of the ubiquinone channel in open and closed complex I and is kinetically consistent with competitive inhibition with conformation-dependent affinities. Our data provide the molecular basis for metformin's well-known superior properties, such as a wide therapeutic window and positive ubiquinone cooperativity, leading to its clinical success and facilitating future therapeutic developments.

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8ZSN
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