7ZKP image
Entry Detail
PDB ID:
7ZKP
EMDB ID:
Title:
Late assembly intermediate of the proximal proton pumping module of complex I with assembly factors NDUFAF1 and CIA84
Biological Source:
Source Organism:
Host Organism:
PDB Version:
Deposition Date:
2022-04-13
Release Date:
2022-11-23
Method Details:
Experimental Method:
Resolution:
3.20 Å
Aggregation State:
PARTICLE
Reconstruction Method:
SINGLE PARTICLE
Macromolecular Entities
Polymer Type:polypeptide(L)
Description:NADH-ubiquinone oxidoreductase chain 1
Chain IDs:F (auth: 1)
Chain Length:341
Number of Molecules:1
Biological Source:Yarrowia lipolytica
Polymer Type:polypeptide(L)
Description:NADH dehydrogenase subunit 2
Chain IDs:G (auth: 2)
Chain Length:469
Number of Molecules:1
Biological Source:Yarrowia lipolytica
Polymer Type:polypeptide(L)
Description:NADH-ubiquinone oxidoreductase chain 3
Chain IDs:H (auth: 3)
Chain Length:128
Number of Molecules:1
Biological Source:Yarrowia lipolytica
Polymer Type:polypeptide(L)
Description:NADH-ubiquinone oxidoreductase chain 6
Chain IDs:I (auth: 6)
Chain Length:185
Number of Molecules:1
Biological Source:Yarrowia lipolytica
Polymer Type:polypeptide(L)
Description:Subunit NIPM of NADH:Ubiquinone Oxidoreductase (Complex I)
Chain IDs:L (auth: 9)
Chain Length:89
Number of Molecules:1
Biological Source:Yarrowia lipolytica
Polymer Type:polypeptide(L)
Description:CIA30 domain-containing protein
Chain IDs:N (auth: A)
Chain Length:290
Number of Molecules:1
Biological Source:Yarrowia lipolytica
Polymer Type:polypeptide(L)
Description:assembly factor CIA84
Chain IDs:M (auth: C)
Chain Length:852
Number of Molecules:1
Biological Source:Yarrowia lipolytica
Polymer Type:polypeptide(L)
Description:Subunit NIMM of NADH:Ubiquinone Oxidoreductase (Complex I)
Chain IDs:A (auth: D)
Chain Length:87
Number of Molecules:1
Biological Source:Yarrowia lipolytica
Polymer Type:polypeptide(L)
Description:NADH-ubiquinone oxidoreductase chain 4L
Chain IDs:B (auth: L)
Chain Length:89
Number of Molecules:1
Biological Source:Yarrowia lipolytica
Polymer Type:polypeptide(L)
Description:Subunit NUPM of NADH:Ubiquinone Oxidoreductase (Complex I)
Chain IDs:C (auth: U)
Chain Length:172
Number of Molecules:1
Biological Source:Yarrowia lipolytica
Polymer Type:polypeptide(L)
Description:Subunit NB6M of NADH:Ubiquinone Oxidoreductase (Complex I)
Chain IDs:D (auth: W)
Chain Length:123
Number of Molecules:1
Biological Source:Yarrowia lipolytica
Polymer Type:polypeptide(L)
Description:NADH-ubiquinone oxidoreductase complex I, 21 kDa subunit-domain-containing protein
Chain IDs:E (auth: X)
Chain Length:169
Number of Molecules:1
Biological Source:Yarrowia lipolytica
Polymer Type:polypeptide(L)
Description:Subunit NEBM of NADH:Ubiquinone Oxidoreductase (Complex I)
Chain IDs:K (auth: b)
Chain Length:74
Number of Molecules:1
Biological Source:Yarrowia lipolytica
Polymer Type:polypeptide(L)
Description:subunit NI9M of protein NADH:Ubiquinone Oxidoreductase (Complex I)
Chain IDs:J (auth: g)
Chain Length:78
Number of Molecules:1
Biological Source:Yarrowia lipolytica
Modified Residue
Compound ID Chain ID Parent Comp ID Details 2D Image
FME B MET modified residue
Primary Citation
Insights into complex I assembly: Function of NDUFAF1 and a link with cardiolipin remodeling.
Sci Adv 8 eadd3855 eadd3855 (2022)
PMID: 36383672 DOI: 10.1126/sciadv.add3855

Abstact

Respiratory complex I is a ~1-MDa proton pump in mitochondria. Its structure has been revealed in great detail, but the structural basis of its assembly, in humans involving at least 15 assembly factors, is essentially unknown. We determined cryo-electron microscopy structures of assembly intermediates associated with assembly factor NDUFAF1 in a yeast model system. Subunits ND2 and NDUFC2 together with assembly factors NDUFAF1 and CIA84 form the nucleation point of the NDUFAF1-dependent assembly pathway. Unexpectedly, the cardiolipin remodeling enzyme tafazzin is an integral component of this core complex. In a later intermediate, all 12 subunits of the proximal proton pump module have assembled. NDUFAF1 locks the central ND3 subunit in an assembly-competent conformation, and major rearrangements of central subunits are required for complex I maturation.

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