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Left PSI in the cyclic electron transport supercomplex NDH-PSI from Arabidopsis

Electron Microscopy
3.25Å resolution
PDB entry 7wfd coloured by chain, front view.
PDB entry 7wfd coloured by chain, side view.
PDB entry 7wfd coloured by chain, top view.
Source organism: Arabidopsis thaliana
Assembly composition:
hetero hexadecamer (preferred)
Entry contents: 16 distinct polypeptide molecules

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Assemblies

Assembly 1 (preferred)
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Multimeric state: hetero hexadecamer
Accessible surface area: 99204.43 Å2
Buried surface area: 307662.66 Å2
Dissociation area: 1,214.81 Å2
Dissociation energy (ΔGdiss): -0.81 kcal/mol
Dissociation entropy (TΔSdiss): 11.48 kcal/mol
Symmetry number: 1
PDBe Complex ID: PDB-CPX-151023

Macromolecules

Photosystem I P700 chlorophyll a apoprotein A1
Chain: AA
Length: 750 amino acids
Theoretical weight: 83.32 KDa
Source organism: Arabidopsis thaliana
UniProt:
  • Canonical: P56766 (Residues: 1-750; Coverage: 100%)
Gene names: AtCg00350, psaA
Pfam: Photosystem I psaA/psaB protein
InterPro:
Photosystem I P700 chlorophyll a apoprotein A1 in PDB entry 7wfd, assembly 1, front view.
Photosystem I P700 chlorophyll a apoprotein A1 in PDB entry 7wfd, assembly 1, side view.
Photosystem I P700 chlorophyll a apoprotein A1 in PDB entry 7wfd, assembly 1, top view.
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Photosystem I P700 chlorophyll a apoprotein A2
Chain: AB
Length: 734 amino acids
Theoretical weight: 82.56 KDa
Source organism: Arabidopsis thaliana
UniProt:
  • Canonical: P56767 (Residues: 1-734; Coverage: 100%)
Gene names: AtCg00340, psaB
Pfam: Photosystem I psaA/psaB protein
InterPro:
Photosystem I P700 chlorophyll a apoprotein A2 in PDB entry 7wfd, assembly 1, front view.
Photosystem I P700 chlorophyll a apoprotein A2 in PDB entry 7wfd, assembly 1, side view.
Photosystem I P700 chlorophyll a apoprotein A2 in PDB entry 7wfd, assembly 1, top view.
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Photosystem I iron-sulfur center
Chain: AC
Length: 81 amino acids
Theoretical weight: 9.05 KDa
Source organism: Arabidopsis thaliana
UniProt:
  • Canonical: P62090 (Residues: 1-81; Coverage: 100%)
Gene names: AtCg01060, frxA, psaC
Pfam: 4Fe-4S dicluster domain
InterPro:
Photosystem I iron-sulfur center in PDB entry 7wfd, assembly 1, front view.
Photosystem I iron-sulfur center in PDB entry 7wfd, assembly 1, side view.
Photosystem I iron-sulfur center in PDB entry 7wfd, assembly 1, top view.
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Photosystem I reaction center subunit II-2, chloroplastic
Chain: AD
Length: 204 amino acids
Theoretical weight: 22.34 KDa
Source organism: Arabidopsis thaliana
UniProt:
  • Canonical: Q9SA56 (Residues: 1-204; Coverage: 100%)
Gene names: At1g03130, F10O3_4, PSAD2
Pfam: PsaD
InterPro:
Photosystem I reaction center subunit II-2, chloroplastic in PDB entry 7wfd, assembly 1, front view.
Photosystem I reaction center subunit II-2, chloroplastic in PDB entry 7wfd, assembly 1, side view.
Photosystem I reaction center subunit II-2, chloroplastic in PDB entry 7wfd, assembly 1, top view.
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Photosystem I reaction center subunit IV A, chloroplastic
Chain: AE
Length: 143 amino acids
Theoretical weight: 14.98 KDa
Source organism: Arabidopsis thaliana
UniProt:
  • Canonical: Q9S831 (Residues: 1-143; Coverage: 100%)
Gene names: At4g28750, F16A16.140, PSAE1
Pfam: Photosystem I reaction centre subunit IV / PsaE
InterPro:
Photosystem I reaction center subunit IV A, chloroplastic in PDB entry 7wfd, assembly 1, front view.
Photosystem I reaction center subunit IV A, chloroplastic in PDB entry 7wfd, assembly 1, side view.
Photosystem I reaction center subunit IV A, chloroplastic in PDB entry 7wfd, assembly 1, top view.
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Photosystem I reaction center subunit III, chloroplastic
Chain: AF
Length: 221 amino acids
Theoretical weight: 24.2 KDa
Source organism: Arabidopsis thaliana
UniProt:
  • Canonical: Q9SHE8 (Residues: 1-221; Coverage: 100%)
Gene names: At1g31330, PSAF, T19E23.12
Pfam: Photosystem I reaction centre subunit III
InterPro:
Photosystem I reaction center subunit III, chloroplastic in PDB entry 7wfd, assembly 1, front view.
Photosystem I reaction center subunit III, chloroplastic in PDB entry 7wfd, assembly 1, side view.
Photosystem I reaction center subunit III, chloroplastic in PDB entry 7wfd, assembly 1, top view.
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Photosystem I reaction center subunit V, chloroplastic
Chain: AG
Length: 160 amino acids
Theoretical weight: 17.1 KDa
Source organism: Arabidopsis thaliana
UniProt:
  • Canonical: Q9S7N7 (Residues: 1-160; Coverage: 100%)
Gene names: At1g55670, F20N2.21, F20N2.33, F20N2_3, PSAG
Pfam: Photosystem I psaG / psaK
InterPro:
Photosystem I reaction center subunit V, chloroplastic in PDB entry 7wfd, assembly 1, front view.
Photosystem I reaction center subunit V, chloroplastic in PDB entry 7wfd, assembly 1, side view.
Photosystem I reaction center subunit V, chloroplastic in PDB entry 7wfd, assembly 1, top view.
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Photosystem I reaction center subunit VI-2, chloroplastic
Chain: AH
Length: 145 amino acids
Theoretical weight: 15.29 KDa
Source organism: Arabidopsis thaliana
UniProt:
  • Canonical: Q9SUI6 (Residues: 1-145; Coverage: 100%)
Gene names: At1g52230, F9I5.11, PSAH2
Pfam: Photosystem I reaction centre subunit VI
InterPro: Photosystem I PsaH, reaction centre subunit VI
Photosystem I reaction center subunit VI-2, chloroplastic in PDB entry 7wfd, assembly 1, front view.
Photosystem I reaction center subunit VI-2, chloroplastic in PDB entry 7wfd, assembly 1, side view.
Photosystem I reaction center subunit VI-2, chloroplastic in PDB entry 7wfd, assembly 1, top view.
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Photosystem I reaction center subunit VIII
Chain: AI
Length: 37 amino acids
Theoretical weight: 4.14 KDa
Source organism: Arabidopsis thaliana
UniProt:
  • Canonical: P56768 (Residues: 1-37; Coverage: 100%)
Gene names: AtCg00510, psaI
Pfam: Photosystem I reaction centre subunit VIII
InterPro:
Photosystem I reaction center subunit VIII in PDB entry 7wfd, assembly 1, front view.
Photosystem I reaction center subunit VIII in PDB entry 7wfd, assembly 1, side view.
Photosystem I reaction center subunit VIII in PDB entry 7wfd, assembly 1, top view.
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Photosystem I reaction center subunit IX
Chain: AJ
Length: 44 amino acids
Theoretical weight: 5.01 KDa
Source organism: Arabidopsis thaliana
UniProt:
  • Canonical: P56769 (Residues: 1-44; Coverage: 100%)
Gene names: AtCg00630, psaJ
Pfam: Photosystem I reaction centre subunit IX / PsaJ
InterPro:
Photosystem I reaction center subunit IX in PDB entry 7wfd, assembly 1, front view.
Photosystem I reaction center subunit IX in PDB entry 7wfd, assembly 1, side view.
Photosystem I reaction center subunit IX in PDB entry 7wfd, assembly 1, top view.
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Photosystem I reaction center subunit psaK, chloroplastic
Chain: AK
Length: 130 amino acids
Theoretical weight: 13.22 KDa
Source organism: Arabidopsis thaliana
UniProt:
  • Canonical: Q9SUI5 (Residues: 1-130; Coverage: 100%)
Gene names: At1g30380, PSAK, T4K22.2
Pfam: Photosystem I psaG / psaK
InterPro:
Photosystem I reaction center subunit psaK, chloroplastic in PDB entry 7wfd, assembly 1, front view.
Photosystem I reaction center subunit psaK, chloroplastic in PDB entry 7wfd, assembly 1, side view.
Photosystem I reaction center subunit psaK, chloroplastic in PDB entry 7wfd, assembly 1, top view.
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Photosystem I reaction center subunit XI, chloroplastic
Chain: AL
Length: 219 amino acids
Theoretical weight: 23.07 KDa
Source organism: Arabidopsis thaliana
UniProt:
  • Canonical: Q9SUI4 (Residues: 1-219; Coverage: 100%)
Gene names: At4g12800, PSAL, T20K18.150
Pfam: Photosystem I reaction centre subunit XI
InterPro:
Photosystem I reaction center subunit XI, chloroplastic in PDB entry 7wfd, assembly 1, front view.
Photosystem I reaction center subunit XI, chloroplastic in PDB entry 7wfd, assembly 1, side view.
Photosystem I reaction center subunit XI, chloroplastic in PDB entry 7wfd, assembly 1, top view.
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Chlorophyll a-b binding protein 6, chloroplastic
Chain: A1
Length: 241 amino acids
Theoretical weight: 26.02 KDa
Source organism: Arabidopsis thaliana
UniProt:
  • Canonical: Q01667 (Residues: 1-241; Coverage: 100%)
Gene names: At3g54890, CAB6, F28P10.130, LHCA1
Pfam: Chlorophyll A-B binding protein
InterPro:
Chlorophyll a-b binding protein 6, chloroplastic in PDB entry 7wfd, assembly 1, front view.
Chlorophyll a-b binding protein 6, chloroplastic in PDB entry 7wfd, assembly 1, side view.
Chlorophyll a-b binding protein 6, chloroplastic in PDB entry 7wfd, assembly 1, top view.
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Photosystem I chlorophyll a/b-binding protein 3-1, chloroplastic
Chain: A3
Length: 273 amino acids
Theoretical weight: 29.21 KDa
Source organism: Arabidopsis thaliana
UniProt:
  • Canonical: Q9SY97 (Residues: 1-273; Coverage: 100%)
Gene names: At1g61520, LHCA3, T25B24.12
Pfam: Chlorophyll A-B binding protein
InterPro:
Photosystem I chlorophyll a/b-binding protein 3-1, chloroplastic in PDB entry 7wfd, assembly 1, front view.
Photosystem I chlorophyll a/b-binding protein 3-1, chloroplastic in PDB entry 7wfd, assembly 1, side view.
Photosystem I chlorophyll a/b-binding protein 3-1, chloroplastic in PDB entry 7wfd, assembly 1, top view.
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Chlorophyll a-b binding protein 4, chloroplastic
Chain: A4
Length: 251 amino acids
Theoretical weight: 27.76 KDa
Source organism: Arabidopsis thaliana
UniProt:
  • Canonical: P27521 (Residues: 1-251; Coverage: 100%)
Gene names: At3g47470, CAB4, F1P2.20, LHCA4
Pfam: Chlorophyll A-B binding protein
InterPro:
Chlorophyll a-b binding protein 4, chloroplastic in PDB entry 7wfd, assembly 1, front view.
Chlorophyll a-b binding protein 4, chloroplastic in PDB entry 7wfd, assembly 1, side view.
Chlorophyll a-b binding protein 4, chloroplastic in PDB entry 7wfd, assembly 1, top view.
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Photosystem I chlorophyll a/b-binding protein 6, chloroplastic
Chain: A6
Length: 270 amino acids
Theoretical weight: 29.97 KDa
Source organism: Arabidopsis thaliana
UniProt:
  • Canonical: Q8LCQ4 (Residues: 1-270; Coverage: 100%)
Gene names: At1g19150, LHCA6, T29M8.2
Pfam: Chlorophyll A-B binding protein
InterPro:
Photosystem I chlorophyll a/b-binding protein 6, chloroplastic in PDB entry 7wfd, assembly 1, front view.
Photosystem I chlorophyll a/b-binding protein 6, chloroplastic in PDB entry 7wfd, assembly 1, side view.
Photosystem I chlorophyll a/b-binding protein 6, chloroplastic in PDB entry 7wfd, assembly 1, top view.
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