9F5X image
Deposition Date 2024-04-30
Release Date 2025-03-12
Last Version Date 2025-04-02
Entry Detail
PDB ID:
9F5X
Title:
Structure of the Chlamydomonas reinhardtii respiratory supercomplex I1 III2 IV2
Biological Source:
Source Organism:
Method Details:
Experimental Method:
Resolution:
2.82 Å
Aggregation State:
PARTICLE
Reconstruction Method:
SINGLE PARTICLE
Macromolecular Entities
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Cytochrome b
Gene (Uniprot):MT-CYB
Chain IDs:A (auth: 1A), B (auth: 1B)
Chain Length:381
Number of Molecules:2
Biological Source:Chlamydomonas reinhardtii
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Cytochrome b-c1 complex subunit Rieske, mitochondrial
Gene (Uniprot):risp
Chain IDs:C (auth: 1C), D (auth: 1D)
Chain Length:262
Number of Molecules:2
Biological Source:Chlamydomonas reinhardtii
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Cytochrome c1
Gene (Uniprot):cyc1
Chain IDs:E (auth: 1E), F (auth: 1F)
Chain Length:314
Number of Molecules:2
Biological Source:Chlamydomonas reinhardtii
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Complex III subunit 9
Gene (Uniprot):CHLRE_11g468950v5
Chain IDs:G (auth: 1G), H (auth: 1H)
Chain Length:60
Number of Molecules:2
Biological Source:Chlamydomonas reinhardtii
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Cytochrome b-c1 complex subunit 6
Chain IDs:I (auth: 1I), J (auth: 1J)
Chain Length:69
Number of Molecules:2
Biological Source:Chlamydomonas reinhardtii
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Mitochondrial ubiquinol-cytochrome c oxidoreductase subunit 8
Gene (Uniprot):CHLRE_03g156950v5
Chain IDs:K (auth: 1K), L (auth: 1L)
Chain Length:73
Number of Molecules:2
Biological Source:Chlamydomonas reinhardtii
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:MPP-Beta
Gene (Uniprot):CHLRE_12g523850v5
Chain IDs:M (auth: 1M), N (auth: 1N)
Chain Length:495
Number of Molecules:2
Biological Source:Chlamydomonas reinhardtii
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Mitochondrial ubiquinol-cytochrome c oxidoreductase subunit 10
Gene (Uniprot):CHLRE_09g409150v5
Chain IDs:O (auth: 1O), P (auth: 1P)
Chain Length:59
Number of Molecules:2
Biological Source:Chlamydomonas reinhardtii
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Alpha-MPP
Gene (Uniprot):CHLRE_12g509750v5
Chain IDs:Q (auth: 1Q), S (auth: 1S)
Chain Length:485
Number of Molecules:2
Biological Source:Chlamydomonas reinhardtii
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Cytochrome b-c1 complex subunit 7
Gene (Uniprot):CHLRE_06g262700v5
Chain IDs:R (auth: 1R), T (auth: 1T)
Chain Length:123
Number of Molecules:2
Biological Source:Chlamydomonas reinhardtii
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Cytochrome c oxidase subunit 1
Gene (Uniprot):COX1
Chain IDs:U (auth: 2A), GA (auth: 3A)
Chain Length:504
Number of Molecules:2
Biological Source:Chlamydomonas reinhardtii
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Cytochrome c oxidase polypeptide II
Gene (Uniprot):cox2a
Chain IDs:V (auth: 2B), HA (auth: 3B)
Chain Length:284
Number of Molecules:2
Biological Source:Chlamydomonas reinhardtii
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:cytochrome-c oxidase
Gene (Uniprot):cox2b
Chain IDs:W (auth: 2C), IA (auth: 3C)
Chain Length:153
Number of Molecules:2
Biological Source:Chlamydomonas reinhardtii
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Cytochrome c oxidase subunit 3
Gene (Uniprot):cox3
Chain IDs:X (auth: 2D), JA (auth: 3D)
Chain Length:382
Number of Molecules:2
Biological Source:Chlamydomonas reinhardtii
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Cox5b
Gene (Uniprot):CHLRE_13g567600v5
Chain IDs:Y (auth: 2E), KA (auth: 3E)
Chain Length:175
Number of Molecules:2
Biological Source:Chlamydomonas reinhardtii
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Cox5c
Gene (Uniprot):CHLRE_03g157700v5
Chain IDs:Z (auth: 2F), LA (auth: 3F)
Chain Length:96
Number of Molecules:2
Biological Source:Chlamydomonas reinhardtii
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Cox6a
Gene (Uniprot):CHLRE_12g537450v5
Chain IDs:AA (auth: 2G), MA (auth: 3G)
Chain Length:125
Number of Molecules:2
Biological Source:Chlamydomonas reinhardtii
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Cox6b
Gene (Uniprot):CHLRE_06g304350v5
Chain IDs:BA (auth: 2H), NA (auth: 3H)
Chain Length:148
Number of Molecules:2
Biological Source:Chlamydomonas reinhardtii
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Cox7c
Gene (Uniprot):CHLRE_07g349350v5
Chain IDs:CA (auth: 2I), OA (auth: 3I)
Chain Length:101
Number of Molecules:2
Biological Source:Chlamydomonas reinhardtii
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Cytochrome c oxidase subunit
Gene (Uniprot):COX90
Chain IDs:DA (auth: 2J), PA (auth: 3J)
Chain Length:105
Number of Molecules:2
Biological Source:Chlamydomonas reinhardtii
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Cox7a
Gene (Uniprot):CHLRE_12g483850v5
Chain IDs:EA (auth: 2K), QA (auth: 3K)
Chain Length:58
Number of Molecules:2
Biological Source:Chlamydomonas reinhardtii
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:CoxIn
Gene (Uniprot):CHLRE_08g372200v5
Chain IDs:FA (auth: 2L), RA (auth: 3L)
Chain Length:87
Number of Molecules:2
Biological Source:Chlamydomonas reinhardtii
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH:ubiquinone oxidoreductase 24 kD subunit
Gene (Uniprot):CHLRE_10g450400v5
Chain IDs:SA (auth: A)
Chain Length:129
Number of Molecules:1
Biological Source:Chlamydomonas reinhardtii
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH dehydrogenase [ubiquinone] flavoprotein 1, mitochondrial
Gene (Uniprot):CHLRE_10g422600v5
Chain IDs:TA (auth: B)
Chain Length:484
Number of Molecules:1
Biological Source:Chlamydomonas reinhardtii
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH:ubiquinone oxidoreductase 78 kDa subunit
Chain IDs:UA (auth: C)
Chain Length:67
Number of Molecules:1
Biological Source:Chlamydomonas reinhardtii
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH:ubiquinone oxidoreductase 30kDa subunit domain-containing protein
Gene (Uniprot):CHLRE_07g327400v5
Chain IDs:VA (auth: D)
Chain Length:86
Number of Molecules:1
Biological Source:Chlamydomonas reinhardtii
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH:ubiquinone oxidoreductase 49 kD subunit
Gene (Uniprot):CHLRE_09g405850v5
Chain IDs:WA (auth: E)
Chain Length:219
Number of Molecules:1
Biological Source:Chlamydomonas reinhardtii
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH:ubiquinone oxidoreductase subunit 10
Gene (Uniprot):CHLRE_12g492300v5
Chain IDs:XA (auth: F)
Chain Length:65
Number of Molecules:1
Biological Source:Chlamydomonas reinhardtii
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH:ubiquinone oxidoreductase subunit 8
Gene (Uniprot):CHLRE_12g496750v5
Chain IDs:YA (auth: G)
Chain Length:231
Number of Molecules:1
Biological Source:Chlamydomonas reinhardtii
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:B14.5a
Gene (Uniprot):CHLRE_12g484700v5
Chain IDs:ZA (auth: H)
Chain Length:118
Number of Molecules:1
Biological Source:Chlamydomonas reinhardtii
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Mitochondrial NADH:ubiquinone oxidoreductase 18 kDa subunit
Gene (Uniprot):CHLRE_13g568800v5
Chain IDs:AB (auth: I)
Chain Length:81
Number of Molecules:1
Biological Source:Chlamydomonas reinhardtii
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Acyl carrier protein
Gene (Uniprot):CHLRE_16g673109v5
Chain IDs:BB (auth: J), JC (auth: r)
Chain Length:128
Number of Molecules:2
Biological Source:Chlamydomonas reinhardtii
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH:ubiquinone oxidoreductase B14 subunit
Gene (Uniprot):CHLRE_12g555250v5
Chain IDs:CB (auth: K)
Chain Length:117
Number of Molecules:1
Biological Source:Chlamydomonas reinhardtii
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH dehydrogenase [ubiquinone] iron-sulfur protein 4, mitochondrial
Chain IDs:DB (auth: L)
Chain Length:121
Number of Molecules:1
Biological Source:Chlamydomonas reinhardtii
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH:ubiquinone oxidoreductase 13 kD-like subunit
Gene (Uniprot):CHLRE_03g178250v5
Chain IDs:EB (auth: M)
Chain Length:142
Number of Molecules:1
Biological Source:Chlamydomonas reinhardtii
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH dehydrogenase [ubiquinone] 1 alpha subcomplex subunit 12
Gene (Uniprot):CHLRE_11g467767v5
Chain IDs:FB (auth: N)
Chain Length:156
Number of Molecules:1
Biological Source:Chlamydomonas reinhardtii
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH:ubiquinone oxidoreductase B8 subunit
Gene (Uniprot):CHLRE_16g679500v5
Chain IDs:GB (auth: O)
Chain Length:155
Number of Molecules:1
Biological Source:Chlamydomonas reinhardtii
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Putative NADH:ubiquinone oxidoreductase 39 kDa subunit
Gene (Uniprot):CHLRE_10g434450v5
Chain IDs:HB (auth: P)
Chain Length:130
Number of Molecules:1
Biological Source:Chlamydomonas reinhardtii
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH-ubiquinone oxidoreductase chain 1
Gene (Uniprot):ND1
Chain IDs:IB (auth: Q)
Chain Length:292
Number of Molecules:1
Biological Source:Chlamydomonas reinhardtii
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH-ubiquinone oxidoreductase chain 2
Gene (Uniprot):ND2
Chain IDs:JB (auth: R)
Chain Length:387
Number of Molecules:1
Biological Source:Chlamydomonas reinhardtii
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH-ubiquinone oxidoreductase chain 3
Gene (Uniprot):CHLRE_08g378900v5
Chain IDs:KB (auth: S)
Chain Length:312
Number of Molecules:1
Biological Source:Chlamydomonas reinhardtii
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH-ubiquinone oxidoreductase chain 4
Gene (Uniprot):ND4
Chain IDs:LB (auth: T)
Chain Length:443
Number of Molecules:1
Biological Source:Chlamydomonas reinhardtii
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH dehydrogenase subunit 4L
Gene (Uniprot):CHLRE_09g402552v5
Chain IDs:MB (auth: U)
Chain Length:227
Number of Molecules:1
Biological Source:Chlamydomonas reinhardtii
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH-ubiquinone oxidoreductase chain 5
Gene (Uniprot):ND5
Chain IDs:NB (auth: V)
Chain Length:546
Number of Molecules:1
Biological Source:Chlamydomonas reinhardtii
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH-ubiquinone oxidoreductase chain 6
Gene (Uniprot):ND6
Chain IDs:OB (auth: W)
Chain Length:109
Number of Molecules:1
Biological Source:Chlamydomonas reinhardtii
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:ASHI
Gene (Uniprot):CHLRE_01g007850v5
Chain IDs:PB (auth: X)
Chain Length:157
Number of Molecules:1
Biological Source:Chlamydomonas reinhardtii
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:P9
Gene (Uniprot):CHLRE_03g206450v5
Chain IDs:QB (auth: Y)
Chain Length:64
Number of Molecules:1
Biological Source:Chlamydomonas reinhardtii
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:KFYI
Gene (Uniprot):CHLRE_17g725400v5
Chain IDs:RB (auth: Z)
Chain Length:124
Number of Molecules:1
Biological Source:Chlamydomonas reinhardtii
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:AGGG
Gene (Uniprot):CHLRE_09g405450v5
Chain IDs:SB (auth: a)
Chain Length:129
Number of Molecules:1
Biological Source:Chlamydomonas reinhardtii
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:ESSS
Gene (Uniprot):CHLRE_05g240800v5
Chain IDs:TB (auth: b)
Chain Length:484
Number of Molecules:1
Biological Source:Chlamydomonas reinhardtii
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:B9
Gene (Uniprot):CHLRE_12g537050v5
Chain IDs:UB (auth: c)
Chain Length:67
Number of Molecules:1
Biological Source:Chlamydomonas reinhardtii
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Mitochondrial NADH:ubiquinone oxidoreductase 10 kDa subunit
Gene (Uniprot):CHLRE_13g571150v5
Chain IDs:VB (auth: d)
Chain Length:86
Number of Molecules:1
Biological Source:Chlamydomonas reinhardtii
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Mitochondrial NADH:ubiquinone oxidoreductase 23 kDa subunit
Gene (Uniprot):CHLRE_14g617826v5
Chain IDs:WB (auth: e)
Chain Length:219
Number of Molecules:1
Biological Source:Chlamydomonas reinhardtii
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Mitochondrial NADH:ubiquinone oxidoreductase 7.5 kDa subunit
Gene (Uniprot):CHLRE_10g459750v5
Chain IDs:XB (auth: f)
Chain Length:65
Number of Molecules:1
Biological Source:Chlamydomonas reinhardtii
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Mitochondrial putative NADH:ubiquinone oxidoreductase 6.5 kDa subunit
Gene (Uniprot):CHLRE_05g244901v5
Chain IDs:YB (auth: g)
Chain Length:231
Number of Molecules:1
Biological Source:Chlamydomonas reinhardtii
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Mitochondrial NADH:ubiquinone oxidoreductase 13 kDa subunit
Gene (Uniprot):CHLRE_03g204650v5
Chain IDs:ZB (auth: h)
Chain Length:118
Number of Molecules:1
Biological Source:Chlamydomonas reinhardtii
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH:ubiquinone oxidoreductase 15 kDa subunit-like
Gene (Uniprot):CHLRE_12g511200v5
Chain IDs:AC (auth: i)
Chain Length:81
Number of Molecules:1
Biological Source:Chlamydomonas reinhardtii
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 7
Gene (Uniprot):CHLRE_06g278188v5
Chain IDs:BC (auth: j)
Chain Length:128
Number of Molecules:1
Biological Source:Chlamydomonas reinhardtii
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 9
Gene (Uniprot):CHLRE_11g467668v5
Chain IDs:CC (auth: k)
Chain Length:117
Number of Molecules:1
Biological Source:Chlamydomonas reinhardtii
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH:ubiquinone oxidoreductase 20,9 kD-like subunit
Gene (Uniprot):CHLRE_06g267200v5
Chain IDs:DC (auth: l)
Chain Length:121
Number of Molecules:1
Biological Source:Chlamydomonas reinhardtii
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NADH dehydrogenase [ubiquinone] 1 alpha subcomplex subunit 13
Gene (Uniprot):CHLRE_16g664600v5
Chain IDs:EC (auth: m)
Chain Length:142
Number of Molecules:1
Biological Source:Chlamydomonas reinhardtii
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Putative NADH:ubiquinone oxidoreductase 12.5 kDa subunit
Gene (Uniprot):CHLRE_07g333900v5
Chain IDs:FC (auth: n)
Chain Length:156
Number of Molecules:1
Biological Source:Chlamydomonas reinhardtii
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Putative NADH:ubiquinone oxidoreductase 17.8 kDa subunit
Gene (Uniprot):CHLRE_12g555150v5
Chain IDs:GC (auth: o)
Chain Length:155
Number of Molecules:1
Biological Source:Chlamydomonas reinhardtii
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Mitochondrial NADH:ubiquinone oxidoreductase 16 kDa subunit
Gene (Uniprot):CHLRE_08g378050v5
Chain IDs:HC (auth: p)
Chain Length:130
Number of Molecules:1
Biological Source:Chlamydomonas reinhardtii
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Mitochondrial NADH:ubiquinone oxidoreductase 19 kDa subunit
Gene (Uniprot):CHLRE_02g100200v5
Chain IDs:IC (auth: q)
Chain Length:292
Number of Molecules:1
Biological Source:Chlamydomonas reinhardtii
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Mitochondrial NADH:ubiquinone oxidoreductase 32 kDa subunit
Gene (Uniprot):Gclp1
Chain IDs:KC (auth: s)
Chain Length:312
Number of Molecules:1
Biological Source:Chlamydomonas reinhardtii
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:CAG2 - CA-like
Gene (Uniprot):CHLRE_06g293850v5
Chain IDs:LC (auth: t)
Chain Length:443
Number of Molecules:1
Biological Source:Chlamydomonas reinhardtii
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:CAG1
Gene (Uniprot):CHLRE_12g516450v5
Chain IDs:MC (auth: u)
Chain Length:227
Number of Molecules:1
Biological Source:Chlamydomonas reinhardtii
Polymer Type:polypeptide(L)
Molecule:P10
Chain IDs:NC (auth: v)
Chain Length:546
Number of Molecules:1
Biological Source:Chlamydomonas reinhardtii
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Mitochondrial NADH:ubiquinone oxidoreductase 9 kDa subunit
Chain IDs:OC (auth: w)
Chain Length:109
Number of Molecules:1
Biological Source:Chlamydomonas reinhardtii
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NUOP8
Gene (Uniprot):CHLRE_16g683150v5
Chain IDs:PC (auth: x)
Chain Length:157
Number of Molecules:1
Biological Source:Chlamydomonas reinhardtii
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:NUOP7
Gene (Uniprot):CHLRE_11g467640v5
Chain IDs:QC (auth: y)
Chain Length:64
Number of Molecules:1
Biological Source:Chlamydomonas reinhardtii
Primary Citation
In-cell architecture of the mitochondrial respiratory chain.
Science 387 1296 1301 (2025)
PMID: 40112058 DOI: 10.1126/science.ads8738

Abstact

Mitochondria regenerate adenosine triphosphate (ATP) through oxidative phosphorylation. This process is carried out by five membrane-bound complexes collectively known as the respiratory chain, working in concert to transfer electrons and pump protons. The precise organization of these complexes in native cells is debated. We used in situ cryo-electron tomography to visualize the native structures and organization of several major mitochondrial complexes in Chlamydomonas reinhardtii cells. ATP synthases and respiratory complexes segregate into curved and flat crista membrane domains, respectively. Respiratory complexes I, III, and IV assemble into a respirasome supercomplex, from which we determined a native 5-angstrom (Å) resolution structure showing binding of electron carrier cytochrome c. Combined with single-particle cryo-electron microscopy at 2.4-Å resolution, we model how the respiratory complexes organize inside native mitochondria.

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Primary Citation of related structures