PDB 6hqb structure summary ‹ Protein Data Bank in Europe (PDBe)

Function and Biology Details

Reaction catalysed:

Reduced plastocyanin + oxidized ferredoxin + light = oxidized plastocyanin + reduced ferredoxin

Biochemical function:

4 iron, 4 sulfur cluster binding

Biological process:

photosynthesis

Cellular component:

photosystem I

Sequence domains:

19 more domains

Structure analysis Details

Assembly composition:

hetero undecamer (preferred)

Assembly name:

Photosystem I (preferred)

PDBe Complex ID:

PDB-CPX-146411 (preferred)

Entry contents:

11 distinct polypeptide molecules

Macromolecules (11 distinct):

Photosystem I P700 chlorophyll a apoprotein A1 Chain: A

Molecule details ›

Chain: A
Length: 751 amino acids
Theoretical weight: 83.04 KDa
Source organism: Synechocystis sp. PCC 6803 substr. Kazusa
UniProt:

Canonical: P29254 (Residues: 1-751; Coverage: 100%)

Gene names: psaA, slr1834
Sequence domains: Photosystem I psaA/psaB protein

Photosystem I P700 chlorophyll a apoprotein A2 Chain: B

Molecule details ›

Chain: B
Length: 731 amino acids
Theoretical weight: 81.37 KDa
Source organism: Synechocystis sp. PCC 6803 substr. Kazusa
UniProt:

Canonical: P29255 (Residues: 1-731; Coverage: 100%)

Gene names: psaB, slr1835
Sequence domains: Photosystem I psaA/psaB protein

Photosystem I iron-sulfur center Chain: C

Molecule details ›

Chain: C
Length: 80 amino acids
Theoretical weight: 8.71 KDa
Source organism: Synechocystis sp. PCC 6803 substr. Kazusa
UniProt:

Canonical: P32422 (Residues: 2-81; Coverage: 99%)

Gene names: psaC, ssl0563
Sequence domains: 4Fe-4S dicluster domain
Structure domains: Alpha-Beta Plaits

Photosystem I reaction center subunit II Chain: D

Molecule details ›

Chain: D
Length: 141 amino acids
Theoretical weight: 15.66 KDa
Source organism: Synechocystis sp. PCC 6803 substr. Kazusa
UniProt:

Canonical: P19569 (Residues: 1-141; Coverage: 100%)

Gene names: psaD, slr0737
Sequence domains: PsaD

Photosystem I reaction center subunit IV Chain: E

Molecule details ›

Chain: E
Length: 69 amino acids
Theoretical weight: 7.68 KDa
Source organism: Synechocystis sp. PCC 6803 substr. Kazusa
UniProt:

Canonical: P12975 (Residues: 2-70; Coverage: 93%)

Gene names: psaE, ssr2831
Sequence domains: Photosystem I reaction centre subunit IV / PsaE
Structure domains: SH3 type barrels.

Photosystem I reaction center subunit III Chain: F

Molecule details ›

Chain: F
Length: 143 amino acids
Theoretical weight: 15.79 KDa
Source organism: Synechocystis sp. PCC 6803 substr. Kazusa
UniProt:

Canonical: P29256 (Residues: 23-165; Coverage: 100%)

Gene names: psaF, sll0819
Sequence domains: Photosystem I reaction centre subunit III
Structure domains: Photosystem I PsaF, reaction centre subunit III

Photosystem I reaction center subunit VIII Chain: I

Molecule details ›

Chain: I
Length: 40 amino acids
Theoretical weight: 4.41 KDa
Source organism: Synechocystis sp. PCC 6803 substr. Kazusa
UniProt:

Canonical: Q55330 (Residues: 1-40; Coverage: 100%)

Gene names: psaI, smr0004
Sequence domains: Photosystem I reaction centre subunit VIII

Photosystem I reaction center subunit IX Chain: J

Molecule details ›

Chain: J
Length: 40 amino acids
Theoretical weight: 4.54 KDa
Source organism: Synechocystis sp. PCC 6803 substr. Kazusa
UniProt:

Canonical: Q55329 (Residues: 1-40; Coverage: 100%)

Gene names: psaJ, sml0008
Sequence domains: Photosystem I reaction centre subunit IX / PsaJ
Structure domains: Single helix bin

Photosystem I reaction center subunit PsaK 2 Chain: K

Molecule details ›

Chain: K
Length: 70 amino acids
Theoretical weight: 7.34 KDa
Source organism: Synechocystis sp. PCC 6803 substr. Kazusa
UniProt:

Canonical: P74564 (Residues: 18-87; Coverage: 78%)

Gene names: psaK2, sll0629
Sequence domains: Photosystem I psaG / psaK

Photosystem I reaction center subunit XI Chain: L

Molecule details ›

Chain: L
Length: 137 amino acids
Theoretical weight: 14.52 KDa
Source organism: Synechocystis sp. PCC 6803 substr. Kazusa
UniProt:

Canonical: P37277 (Residues: 22-157; Coverage: 87%)

Gene names: psaL, slr1655
Sequence domains: Photosystem I reaction centre subunit XI

Photosystem I reaction center subunit XII Chain: M

Molecule details ›

Chain: M
Length: 31 amino acids
Theoretical weight: 3.38 KDa
Source organism: Synechocystis sp. PCC 6803 substr. Kazusa
UniProt: