5XTI image
Deposition Date 2017-06-19
Release Date 2017-09-13
Last Version Date 2025-04-09
Entry Detail
PDB ID:
5XTI
Keywords:
OXIDOREDUCTASE/ELECTRON TRANSPORT
Title:
Cryo-EM architecture of human respiratory chain megacomplex-I2III2IV2
Biological Source:
Source Organism:
Homo sapiens (Taxon ID: 9606)
Bos taurus (Taxon ID: 9913)
Method Details:
Experimental Method:
ELECTRON MICROSCOPY
Resolution:
17.40 Å
Aggregation State:
PARTICLE
Reconstruction Method:
SINGLE PARTICLE
5XTI validation report
Macromolecular Entities
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Cytochrome c oxidase subunit 4 isoform 1, mitochondrial
Gene (Uniprot):COX4I1
Chain IDs:WA (auth: 0), YD (auth: B0)
Chain Length:144
Number of Molecules:2
Biological Source:Bos taurus
UniProt ID:P00423 Pfam ID:PF02936 EC:7.1.1.9
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Cytochrome c oxidase subunit 5A, mitochondrial
Gene (Uniprot):COX5A
Chain IDs:XA (auth: 1), ZD (auth: B1)
Chain Length:109
Number of Molecules:2
Biological Source:Bos taurus
UniProt ID:P00426 Pfam ID:PF02284 EC:7.1.1.9
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Cytochrome c oxidase subunit 5B, mitochondrial
Gene (Uniprot):COX5B
Chain IDs:YA (auth: 2), AE (auth: B2)
Chain Length:98
Number of Molecules:2
Biological Source:Bos taurus
UniProt ID:P00428 Pfam ID:PF01215 EC:7.1.1.9
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Cytochrome c oxidase subunit 6A2, mitochondrial
Gene (Uniprot):COX6A2
Chain IDs:ZA (auth: 3), BE (auth: B3)
Chain Length:84
Number of Molecules:2
Biological Source:Bos taurus
UniProt ID:P07471 Pfam ID:PF02046 EC:7.1.1.9
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Cytochrome c oxidase subunit 6B1
Gene (Uniprot):COX6B1
Chain IDs:AB (auth: 4), CE (auth: B4)
Chain Length:75
Number of Molecules:2
Biological Source:Bos taurus
UniProt ID:P00429 Pfam ID:PF02297 EC:7.1.1.9
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Cytochrome c oxidase subunit 6C
Gene (Uniprot):COX6C
Chain IDs:BB (auth: 5), DE (auth: B5)
Chain Length:73
Number of Molecules:2
Biological Source:Bos taurus
UniProt ID:P04038 Pfam ID:PF02937 EC:7.1.1.9
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Cytochrome c oxidase subunit 7A1, mitochondrial
Gene (Uniprot):COX7A1
Chain IDs:CB (auth: 6), EE (auth: B6)
Chain Length:56
Number of Molecules:2
Biological Source:Bos taurus
UniProt ID:P07470 Pfam ID:PF02238 EC:7.1.1.9
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Cytochrome c oxidase subunit 7B, mitochondrial
Gene (Uniprot):COX7B
Chain IDs:DB (auth: 7), FE (auth: B7)
Chain Length:49
Number of Molecules:2
Biological Source:Bos taurus
UniProt ID:P13183 Pfam ID:PF05392 EC:7.1.1.9
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Cytochrome c oxidase subunit 7C, mitochondrial
Gene (Uniprot):COX7C
Chain IDs:EB (auth: 8), GE (auth: B8)
Chain Length:47
Number of Molecules:2
Biological Source:Bos taurus
UniProt ID:P00430 Pfam ID:PF02935 EC:7.1.1.9
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Cytochrome c oxidase subunit 8B, mitochondrial
Gene (Uniprot):COX8B
Chain IDs:FB (auth: 9), HE (auth: B9)
Chain Length:43
Number of Molecules:2
Biological Source:Bos taurus
UniProt ID:P10175 Pfam ID:PF02285 EC:7.1.1.9
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH dehydrogenase [ubiquinone] flavoprotein 1, mitochondrial
Gene (Uniprot):NDUFV1
Chain IDs:A, CC (auth: BA)
Chain Length:431
Number of Molecules:2
Biological Source:Homo sapiens
UniProt ID:P49821 Pfam ID:PF01512, PF22461, PF10589
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Cytochrome b-c1 complex subunit 8
Gene (Uniprot):UQCRQ
Chain IDs:GB (auth: AA), RB (auth: AN)
Chain Length:81
Number of Molecules:2
Biological Source:Homo sapiens
UniProt ID:O14949 Pfam ID:PF02939
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Cytochrome b-c1 complex subunit Rieske, mitochondrial
Gene (Uniprot):UQCRFS1
Chain IDs:HB (auth: AB), SB (auth: AO)
Chain Length:57
Number of Molecules:2
Biological Source:Homo sapiens
UniProt ID:P47985 Pfam ID:PF09165, PF02921, PF00355
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Cytochrome b-c1 complex subunit Rieske, mitochondrial
Gene (Uniprot):UQCRFS1
Chain IDs:IB (auth: AC), TB (auth: AP)
Chain Length:196
Number of Molecules:2
Biological Source:Homo sapiens
UniProt ID:P47985 Pfam ID:PF09165, PF02921, PF00355
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Cytochrome b-c1 complex subunit 9
Gene (Uniprot):UQCR10
Chain IDs:JB (auth: AD), UB (auth: AQ)
Chain Length:62
Number of Molecules:2
Biological Source:Homo sapiens
UniProt ID:Q9UDW1 Pfam ID:PF05365
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Cytochrome b-c1 complex subunit 6, mitochondrial
Gene (Uniprot):UQCRH
Chain IDs:KB (auth: AE), VB (auth: AR)
Chain Length:74
Number of Molecules:2
Biological Source:Homo sapiens
UniProt ID:P07919 Pfam ID:PF02320
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Cytochrome b-c1 complex subunit 7
Gene (Uniprot):UQCRB
Chain IDs:LB (auth: AF), WB (auth: AS)
Chain Length:106
Number of Molecules:2
Biological Source:Homo sapiens
UniProt ID:P14927 Pfam ID:PF02271 EC:7.1.1.8
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Cytochrome b-c1 complex subunit 10
Gene (Uniprot):UQCR11
Chain IDs:MB (auth: AG), XB (auth: AT)
Chain Length:51
Number of Molecules:2
Biological Source:Homo sapiens
UniProt ID:O14957 Pfam ID:PF08997
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Cytochrome c1, heme protein, mitochondrial
Gene (Uniprot):CYC1
Chain IDs:NB (auth: AH), YB (auth: AU)
Chain Length:241
Number of Molecules:2
Biological Source:Homo sapiens
UniProt ID:P08574 Pfam ID:PF02167
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Cytochrome b
Gene (Uniprot):MT-CYB
Chain IDs:OB (auth: AJ), ZB (auth: AV)
Chain Length:378
Number of Molecules:2
Biological Source:Homo sapiens
UniProt ID:P00156 Pfam ID:PF00033, PF00032
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Cytochrome b-c1 complex subunit 2, mitochondrial
Gene (Uniprot):UQCRC2
Chain IDs:PB (auth: AK), AC (auth: AW)
Chain Length:419
Number of Molecules:2
Biological Source:Homo sapiens
UniProt ID:P22695 Pfam ID:PF00675, PF05193
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Cytochrome b-c1 complex subunit 1, mitochondrial
Gene (Uniprot):UQCRC1
Chain IDs:QB (auth: AL), BC (auth: AY)
Chain Length:446
Number of Molecules:2
Biological Source:Homo sapiens
UniProt ID:P31930 Pfam ID:PF00675, PF05193
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH dehydrogenase [ubiquinone] iron-sulfur protein 8, mitochondrial
Gene (Uniprot):NDUFS8
Chain IDs:B, DC (auth: BB)
Chain Length:124
Number of Molecules:2
Biological Source:Homo sapiens
UniProt ID:O00217 Pfam ID:PF12838
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH dehydrogenase [ubiquinone] iron-sulfur protein 7, mitochondrial
Gene (Uniprot):NDUFS7
Chain IDs:C, EC (auth: BC)
Chain Length:156
Number of Molecules:2
Biological Source:Homo sapiens
UniProt ID:O75251 Pfam ID:PF01058
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH dehydrogenase [ubiquinone] 1 alpha subcomplex subunit 6
Gene (Uniprot):NDUFA6
Chain IDs:D (auth: E), FC (auth: BE)
Chain Length:113
Number of Molecules:2
Biological Source:Homo sapiens
UniProt ID:P56556 Pfam ID:PF13233
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH dehydrogenase [ubiquinone] 1 alpha subcomplex subunit 2
Gene (Uniprot):NDUFA2
Chain IDs:E (auth: F), GC (auth: BF)
Chain Length:47
Number of Molecules:2
Biological Source:Homo sapiens
UniProt ID:O43678 Pfam ID:PF05047
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Acyl carrier protein, mitochondrial
Gene (Uniprot):NDUFAB1
Chain IDs:F (auth: G), V (auth: X), HC (auth: BG), XC (auth: BX)
Chain Length:85
Number of Molecules:4
Biological Source:Homo sapiens
UniProt ID:O14561 Pfam ID:PF00550
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH dehydrogenase [ubiquinone] 1 alpha subcomplex subunit 5
Gene (Uniprot):NDUFA5
Chain IDs:G (auth: H), IC (auth: BH)
Chain Length:112
Number of Molecules:2
Biological Source:Homo sapiens
UniProt ID:Q16718 Pfam ID:PF04716
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH dehydrogenase [ubiquinone] 1 alpha subcomplex subunit 7
Gene (Uniprot):NDUFA7
Chain IDs:H (auth: I), JC (auth: BI)
Chain Length:347
Number of Molecules:2
Biological Source:Homo sapiens
UniProt ID:O95182 Pfam ID:PF07347
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH dehydrogenase [ubiquinone] 1 alpha subcomplex subunit 9, mitochondrial
Gene (Uniprot):NDUFA9
Chain IDs:I (auth: J), KC (auth: BJ)
Chain Length:115
Number of Molecules:2
Biological Source:Homo sapiens
UniProt ID:Q16795 Pfam ID:PF01370
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH dehydrogenase [ubiquinone] flavoprotein 3, mitochondrial
Gene (Uniprot):NDUFV3
Chain IDs:J (auth: K), LC (auth: BK)
Chain Length:97
Number of Molecules:2
Biological Source:Homo sapiens
UniProt ID:P56181 Pfam ID:PF15880
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH dehydrogenase [ubiquinone] iron-sulfur protein 4, mitochondrial
Gene (Uniprot):NDUFS4
Chain IDs:K (auth: L), MC (auth: BL)
Chain Length:118
Number of Molecules:2
Biological Source:Homo sapiens
UniProt ID:O43181 Pfam ID:PF04800
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH-ubiquinone oxidoreductase 75 kDa subunit, mitochondrial
Gene (Uniprot):NDUFS1
Chain IDs:L (auth: M), NC (auth: BM)
Chain Length:687
Number of Molecules:2
Biological Source:Homo sapiens
UniProt ID:P28331 Pfam ID:PF13510, PF10588, PF22117, PF22151, PF00384, PF09326
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH dehydrogenase [ubiquinone] 1 alpha subcomplex subunit 12
Gene (Uniprot):NDUFA12
Chain IDs:M (auth: N), OC (auth: BN)
Chain Length:143
Number of Molecules:2
Biological Source:Homo sapiens
UniProt ID:Q9UI09 Pfam ID:PF05071
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH dehydrogenase [ubiquinone] flavoprotein 2, mitochondrial
Gene (Uniprot):NDUFV2
Chain IDs:N (auth: O), PC (auth: BO)
Chain Length:212
Number of Molecules:2
Biological Source:Homo sapiens
UniProt ID:P19404 Pfam ID:PF01257
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH dehydrogenase [ubiquinone] iron-sulfur protein 3, mitochondrial
Gene (Uniprot):NDUFS3
Chain IDs:O (auth: P), QC (auth: BP)
Chain Length:172
Number of Molecules:2
Biological Source:Homo sapiens
UniProt ID:O75489 Pfam ID:PF00329
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH dehydrogenase [ubiquinone] iron-sulfur protein 2, mitochondrial
Gene (Uniprot):NDUFS2
Chain IDs:P (auth: Q), RC (auth: BQ)
Chain Length:430
Number of Molecules:2
Biological Source:Homo sapiens
UniProt ID:O75306 Pfam ID:PF00346
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH dehydrogenase [ubiquinone] 1 alpha subcomplex subunit 1
Gene (Uniprot):NDUFA1
Chain IDs:Q (auth: S), SC (auth: BS)
Chain Length:318
Number of Molecules:2
Biological Source:Homo sapiens
UniProt ID:O15239 Pfam ID:PF15879
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH dehydrogenase [ubiquinone] iron-sulfur protein 6, mitochondrial
Gene (Uniprot):NDUFS6
Chain IDs:R (auth: T), TC (auth: BT)
Chain Length:95
Number of Molecules:2
Biological Source:Homo sapiens
UniProt ID:O75380 Pfam ID:PF10276
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH dehydrogenase [ubiquinone] 1 alpha subcomplex subunit 3
Gene (Uniprot):NDUFA3
Chain IDs:S (auth: U), UC (auth: BU)
Chain Length:83
Number of Molecules:2
Biological Source:Homo sapiens
UniProt ID:O95167 Pfam ID:PF14987
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH dehydrogenase [ubiquinone] 1 alpha subcomplex subunit 11
Gene (Uniprot):NDUFA11
Chain IDs:T (auth: V), VC (auth: BV)
Chain Length:122
Number of Molecules:2
Biological Source:Homo sapiens
UniProt ID:Q86Y39
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH dehydrogenase [ubiquinone] 1 alpha subcomplex subunit 13
Gene (Uniprot):NDUFA13
Chain IDs:U (auth: W), WC (auth: BW)
Chain Length:320
Number of Molecules:2
Biological Source:Homo sapiens
UniProt ID:Q9P0J0 Pfam ID:PF06212
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 2, mitochondrial
Gene (Uniprot):NDUFB2
Chain IDs:W (auth: Y), YC (auth: BY)
Chain Length:227
Number of Molecules:2
Biological Source:Homo sapiens
UniProt ID:O95178 Pfam ID:PF14813
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 3
Gene (Uniprot):NDUFB3
Chain IDs:X (auth: Z), ZC (auth: BZ)
Chain Length:80
Number of Molecules:2
Biological Source:Homo sapiens
UniProt ID:O43676 Pfam ID:PF08122
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 5, mitochondrial
Gene (Uniprot):NDUFB5
Chain IDs:Y (auth: a), AD (auth: Ba)
Chain Length:431
Number of Molecules:2
Biological Source:Homo sapiens
UniProt ID:O43674 Pfam ID:PF09781
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 6
Gene (Uniprot):NDUFB6
Chain IDs:Z (auth: b), BD (auth: Bb)
Chain Length:124
Number of Molecules:2
Biological Source:Homo sapiens
UniProt ID:O95139 Pfam ID:PF09782
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 8, mitochondrial
Gene (Uniprot):NDUFB8
Chain IDs:AA (auth: c), CD (auth: Bc)
Chain Length:156
Number of Molecules:2
Biological Source:Homo sapiens
UniProt ID:O95169 Pfam ID:PF05821
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 10
Gene (Uniprot):NDUFB10
Chain IDs:BA (auth: d), DD (auth: Bd)
Chain Length:171
Number of Molecules:2
Biological Source:Homo sapiens
UniProt ID:O96000 Pfam ID:PF10249
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 11, mitochondrial
Gene (Uniprot):NDUFB11
Chain IDs:CA (auth: e), ED (auth: Be)
Chain Length:113
Number of Molecules:2
Biological Source:Homo sapiens
UniProt ID:Q9NX14 Pfam ID:PF10183
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH dehydrogenase [ubiquinone] 1 subunit C1, mitochondrial
Gene (Uniprot):NDUFC1
Chain IDs:DA (auth: f), FD (auth: Bf)
Chain Length:47
Number of Molecules:2
Biological Source:Homo sapiens
UniProt ID:O43677 Pfam ID:PF15088
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH dehydrogenase [ubiquinone] 1 subunit C2
Gene (Uniprot):NDUFC2
Chain IDs:EA (auth: g), GD (auth: Bg)
Chain Length:85
Number of Molecules:2
Biological Source:Homo sapiens
UniProt ID:O95298 Pfam ID:PF06374
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH dehydrogenase [ubiquinone] iron-sulfur protein 5
Gene (Uniprot):NDUFS5
Chain IDs:FA (auth: h), HD (auth: Bh)
Chain Length:112
Number of Molecules:2
Biological Source:Homo sapiens
UniProt ID:O43920 Pfam ID:PF10200
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH-ubiquinone oxidoreductase chain 2
Chain IDs:GA (auth: i), ID (auth: Bi)
Chain Length:347
Number of Molecules:2
Biological Source:Homo sapiens
UniProt ID:P03891 Pfam ID:PF00361, PF06444
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH-ubiquinone oxidoreductase chain 3
Gene (Uniprot):NADH3
Chain IDs:HA (auth: j), JD (auth: Bj)
Chain Length:115
Number of Molecules:2
Biological Source:Homo sapiens
UniProt ID:B9EE38 Pfam ID:PF00507
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH-ubiquinone oxidoreductase chain 4L
Gene (Uniprot):ND4L
Chain IDs:IA (auth: k), KD (auth: Bk)
Chain Length:97
Number of Molecules:2
Biological Source:Homo sapiens
UniProt ID:V9JN72 Pfam ID:PF00420
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH-ubiquinone oxidoreductase chain 5
Chain IDs:JA (auth: l), LD (auth: Bl)
Chain Length:118
Number of Molecules:2
Biological Source:Homo sapiens
UniProt ID:P03915 Pfam ID:PF00662, PF00361, PF06455
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH-ubiquinone oxidoreductase chain 6
Gene (Uniprot):ND6
Chain IDs:KA (auth: m), MD (auth: Bm)
Chain Length:687
Number of Molecules:2
Biological Source:Homo sapiens
UniProt ID:Q8HAX7 Pfam ID:PF00499
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 1
Gene (Uniprot):NDUFB1
Chain IDs:LA (auth: n), ND (auth: Bn)
Chain Length:143
Number of Molecules:2
Biological Source:Homo sapiens
UniProt ID:O75438 Pfam ID:PF08040
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 4
Gene (Uniprot):NDUFB4
Chain IDs:MA (auth: o), OD (auth: Bo)
Chain Length:212
Number of Molecules:2
Biological Source:Homo sapiens
UniProt ID:O95168 Pfam ID:PF07225
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 9
Gene (Uniprot):NDUFB9
Chain IDs:NA (auth: p), PD (auth: Bp)
Chain Length:172
Number of Molecules:2
Biological Source:Homo sapiens
UniProt ID:Q9Y6M9 Pfam ID:PF05347
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH-ubiquinone oxidoreductase chain 4
Chain IDs:OA (auth: r), QD (auth: Br)
Chain Length:459
Number of Molecules:2
Biological Source:Homo sapiens
UniProt ID:P03905 Pfam ID:PF01059, PF00361
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH-ubiquinone oxidoreductase chain 1
Gene (Uniprot):ND1
Chain IDs:PA (auth: s), RD (auth: Bs)
Chain Length:318
Number of Molecules:2
Biological Source:Homo sapiens
UniProt ID:H9PGF0 Pfam ID:PF00146
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH dehydrogenase [ubiquinone] 1 alpha subcomplex subunit 8
Gene (Uniprot):NDUFA8
Chain IDs:QA (auth: u), SD (auth: Bu)
Chain Length:83
Number of Molecules:2
Biological Source:Homo sapiens
UniProt ID:P51970 Pfam ID:PF06747
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 7
Gene (Uniprot):NDUFB7
Chain IDs:RA (auth: v), TD (auth: Bv)
Chain Length:122
Number of Molecules:2
Biological Source:Homo sapiens
UniProt ID:P17568 Pfam ID:PF05676
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH dehydrogenase [ubiquinone] 1 alpha subcomplex subunit 10, mitochondrial
Gene (Uniprot):NDUFA10
Chain IDs:SA (auth: w), UD (auth: Bw)
Chain Length:320
Number of Molecules:2
Biological Source:Homo sapiens
UniProt ID:O95299 Pfam ID:PF01712
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Cytochrome c oxidase subunit 1
Gene (Uniprot):MT-CO1
Chain IDs:TA (auth: x), VD (auth: Bx)
Chain Length:514
Number of Molecules:2
Biological Source:Bos taurus
UniProt ID:P00396 Pfam ID:PF00115 EC:7.1.1.9
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Cytochrome c oxidase subunit 2
Gene (Uniprot):MT-CO2
Chain IDs:UA (auth: y), WD (auth: By)
Chain Length:227
Number of Molecules:2
Biological Source:Bos taurus
UniProt ID:P68530 Pfam ID:PF02790, PF00116
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Cytochrome c oxidase subunit 3
Gene (Uniprot):MT-CO3
Chain IDs:VA (auth: z), XD (auth: Bz)
Chain Length:80
Number of Molecules:2
Biological Source:Bos taurus
UniProt ID:P00415 Pfam ID:PF00510 EC:7.1.1.9
Ligand Molecules
8Q1
CDL
CU
FES
FMN
HEA
HEC
HEM
MG
NDP
PEE
PLX
SF4
ZN
Primary Citation
Architecture of Human Mitochondrial Respiratory Megacomplex I2III2IV2.
Cell 170 1247 1257.e12 (2017)
PMID: 28844695 DOI: 10.1016/j.cell.2017.07.050

Abstact

The respiratory megacomplex represents the highest-order assembly of respiratory chain complexes, and it allows mitochondria to respond to energy-requiring conditions. To understand its architecture, we examined the human respiratory chain megacomplex-I2III2IV2 (MCI2III2IV2) with 140 subunits and a subset of associated cofactors using cryo-electron microscopy. The MCI2III2IV2 forms a circular structure with the dimeric CIII located in the center, where it is surrounded by two copies each of CI and CIV. Two cytochrome c (Cyt.c) molecules are positioned to accept electrons on the surface of the c1 state CIII dimer. Analyses indicate that CII could insert into the gaps between CI and CIV to form a closed ring, which we termed the electron transport chain supercomplex. The structure not only reveals the precise assignment of individual subunits of human CI and CIII, but also enables future in-depth analysis of the electron transport chain as a whole.

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Protein

Chemical

Disease

Primary Citation of related structures
5XTI