7EWK image
Deposition Date 2021-05-25
Release Date 2022-01-12
Last Version Date 2024-06-05
Entry Detail
PDB ID:
7EWK
Keywords:
PHOTOSYNTHESIS
Title:
Barley photosystem I-LHCI-Lhca6 supercomplex
Biological Source:
Source Organism:
Hordeum vulgare subsp. spontaneum (Taxon ID: 77009)
Hordeum vulgare (Taxon ID: 4513)
Method Details:
Experimental Method:
ELECTRON MICROSCOPY
Resolution:
3.88 Å
Aggregation State:
PARTICLE
Reconstruction Method:
SINGLE PARTICLE
7EWK validation report
Macromolecular Entities
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Chlorophyll a-b binding protein Lhca1
Chain IDs:L (auth: 1)
Chain Length:193
Number of Molecules:1
Biological Source:Hordeum vulgare subsp. spontaneum
UniProt ID:Q9SDM1 Pfam ID:PF00504
Polymer Type:polypeptide(L)
Molecule:Chlorophyll a-b binding protein Lhca3
Chain IDs:M (auth: 3)
Chain Length:222
Number of Molecules:1
Biological Source:Hordeum vulgare subsp. spontaneum
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Chlorophyll a-b binding protein, chloroplastic
Gene (Uniprot):Lhca4
Chain IDs:N (auth: 4)
Chain Length:197
Number of Molecules:1
Biological Source:Hordeum vulgare
UniProt ID:Q9LKC7 Pfam ID:PF00504
Polymer Type:polypeptide(L)
Molecule:Chlorophyll a-b binding protein Lhca6
Chain IDs:O (auth: 6)
Chain Length:211
Number of Molecules:1
Biological Source:Hordeum vulgare subsp. spontaneum
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Photosystem I P700 chlorophyll a apoprotein A1
Chain IDs:A
Chain Length:742
Number of Molecules:1
Biological Source:Hordeum vulgare subsp. spontaneum
UniProt ID:A1E9J1 Pfam ID:PF00223
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Photosystem I P700 chlorophyll a apoprotein A2
Chain IDs:B
Chain Length:733
Number of Molecules:1
Biological Source:Hordeum vulgare subsp. spontaneum
UniProt ID:A1E9J0 Pfam ID:PF00223
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Photosystem I iron-sulfur center
Chain IDs:C
Chain Length:81
Number of Molecules:1
Biological Source:Hordeum vulgare subsp. spontaneum
UniProt ID:P69416 Pfam ID:PF12838
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Photosystem I reaction center subunit D
Chain IDs:D
Chain Length:142
Number of Molecules:1
Biological Source:Hordeum vulgare subsp. spontaneum
UniProt ID:P36213 Pfam ID:PF02531
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Photosystem I reaction center subunit E
Chain IDs:E
Chain Length:68
Number of Molecules:1
Biological Source:Hordeum vulgare subsp. spontaneum
UniProt ID:P13194 Pfam ID:PF02427
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Photosystem I reaction center subunit F
Chain IDs:F
Chain Length:158
Number of Molecules:1
Biological Source:Hordeum vulgare subsp. spontaneum
UniProt ID:P13192 Pfam ID:PF02507
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Photosystem I reaction center subunit H
Chain IDs:G (auth: H)
Chain Length:61
Number of Molecules:1
Biological Source:Hordeum vulgare subsp. spontaneum
UniProt ID:P20143 Pfam ID:PF03244
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Photosystem I reaction center subunit VIII
Chain IDs:H (auth: I)
Chain Length:30
Number of Molecules:1
Biological Source:Hordeum vulgare subsp. spontaneum
UniProt ID:P13165 Pfam ID:PF00796
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Photosystem I reaction center subunit IX
Chain IDs:I (auth: J)
Chain Length:42
Number of Molecules:1
Biological Source:Hordeum vulgare subsp. spontaneum
UniProt ID:A1E9L0 Pfam ID:PF01701
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Photosystem I reaction center subunit K
Chain IDs:J (auth: K)
Chain Length:84
Number of Molecules:1
Biological Source:Hordeum vulgare subsp. spontaneum
UniProt ID:P36886 Pfam ID:PF01241
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Photosystem I reaction center subunit L
Chain IDs:K (auth: L)
Chain Length:146
Number of Molecules:1
Biological Source:Hordeum vulgare subsp. spontaneum
UniProt ID:P23993 Pfam ID:PF02605
Ligand Molecules
BCR
CHL
CL0
CLA
DGD
LHG
LMG
LUT
PQN
SF4
XAT
Primary Citation
Architecture of the chloroplast PSI-NDH supercomplex in Hordeum vulgare.
Nature 601 649 654 (2022)
PMID: 34879391 DOI: 10.1038/s41586-021-04277-6

Abstact

The chloroplast NADH dehydrogenase-like (NDH) complex is composed of at least 29 subunits and has an important role in mediating photosystem I (PSI) cyclic electron transport (CET)1-3. The NDH complex associates with PSI to form the PSI-NDH supercomplex and fulfil its function. Here, we report cryo-electron microscopy structures of a PSI-NDH supercomplex from barley (Hordeum vulgare). The structures reveal that PSI-NDH is composed of two copies of the PSI-light-harvesting complex I (LHCI) subcomplex and one NDH complex. Two monomeric LHCI proteins, Lhca5 and Lhca6, mediate the binding of two PSI complexes to NDH. Ten plant chloroplast-specific NDH subunits are presented and their exact positions as well as their interactions with other subunits in NDH are elucidated. In all, this study provides a structural basis for further investigations on the functions and regulation of PSI-NDH-dependent CET.

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Disease

Primary Citation of related structures
7EWK