PDB 1q90 structure summary ‹ Protein Data Bank in Europe (PDBe)

Function and Biology Details

Reaction catalysed:

Plastoquinol + 2 oxidized plastocyanin + 2 H(+)(Side 1) = plastoquinone + 2 reduced plastocyanin + 4 H(+)(Side 2)

Biochemical function:

electron transporter, transferring electrons within cytochrome b6/f complex of photosystem II activity

Biological process:

photosynthesis

Cellular component:

membrane

Sequence domains:

14 more domains

Structure domains:

3 more domains

Structure analysis Details

Assemblies composition:

hetero octadecamer (preferred)
hetero 36-mer

PDBe Complex ID:

PDB-CPX-142955 (preferred)

Entry contents:

9 distinct polypeptide molecules

Macromolecules (9 distinct):

Cytochrome f Chain: A

Molecule details ›

Chain: A
Length: 292 amino acids
Theoretical weight: 32.11 KDa
Source organism: Chlamydomonas reinhardtii
Expression system: Chlamydomonas reinhardtii
UniProt:

Canonical: P23577 (Residues: 32-317; Coverage: 100%)

Gene name: petA
Sequence domains:

Structure domains:

Cytochrome b6 Chain: B

Molecule details ›

Chain: B
Length: 215 amino acids
Theoretical weight: 24.18 KDa
Source organism: Chlamydomonas reinhardtii
Expression system: Chlamydomonas reinhardtii
UniProt:

Canonical: Q00471 (Residues: 1-215; Coverage: 100%)

Gene name: petB
Sequence domains: Cytochrome b/b6/petB
Structure domains: Cytochrome Bc1 Complex; Chain C

Cytochrome b6-f complex iron-sulfur subunit, chloroplastic Chain: C

Molecule details ›

Chain: C
Length: 127 amino acids
Theoretical weight: 13.66 KDa
Source organism: Chlamydomonas reinhardtii
Expression system: Chlamydomonas reinhardtii
UniProt:

Canonical: P49728 (Residues: 80-206; Coverage: 62%)

Gene name: petC
Sequence domains: Rieske [2Fe-2S] domain
Structure domains: Rieske [2Fe-2S] iron-sulphur domain

Cytochrome b6-f complex subunit 4 Chain: D

Molecule details ›

Chain: D
Length: 159 amino acids
Theoretical weight: 17.31 KDa
Source organism: Chlamydomonas reinhardtii
Expression system: Chlamydomonas reinhardtii
UniProt:

Canonical: P23230 (Residues: 1-159; Coverage: 99%)

Gene name: petD
Sequence domains: Cytochrome b(C-terminal)/b6/petD
Structure domains:

Cytochrome b6-f complex iron-sulfur subunit, chloroplastic Chain: R

Molecule details ›

Chain: R
Length: 49 amino acids
Theoretical weight: 4.71 KDa
Source organism: Chlamydomonas reinhardtii
Expression system: Chlamydomonas reinhardtii
UniProt:

Canonical: P49728 (Residues: 31-79; Coverage: 24%)

Gene name: petC

Cytochrome b6-f complex subunit 5 Chain: G

Molecule details ›

Chain: G
Length: 37 amino acids
Theoretical weight: 3.98 KDa
Source organism: Chlamydomonas reinhardtii
Expression system: Chlamydomonas reinhardtii
UniProt:

Canonical: Q08362 (Residues: 1-37; Coverage: 100%)

Gene name: petG
Sequence domains: Cytochrome B6-F complex subunit 5

Cytochrome b6-f complex subunit 6 Chain: L

Molecule details ›

Chain: L
Length: 32 amino acids
Theoretical weight: 3.44 KDa
Source organism: Chlamydomonas reinhardtii
Expression system: Chlamydomonas reinhardtii
UniProt:

Canonical: P50369 (Residues: 12-43; Coverage: 74%)

Gene name: petL
Sequence domains: Cytochrome B6-F complex subunit VI (PetL)

Cytochrome b6-f complex subunit 7, chloroplastic Chain: M

Molecule details ›

Chain: M
Length: 39 amino acids
Theoretical weight: 4.04 KDa
Source organism: Chlamydomonas reinhardtii
Expression system: Chlamydomonas reinhardtii
UniProt:

Canonical: Q42496 (Residues: 61-99; Coverage: 39%)

Gene names: petM, petX
Sequence domains: PetM family of cytochrome b6f complex subunit 7

Cytochrome b6-f complex subunit 8, chloroplastic Chain: N

Molecule details ›

Chain: N
Length: 31 amino acids
Theoretical weight: 3.28 KDa
Source organism: Chlamydomonas reinhardtii
Expression system: Chlamydomonas reinhardtii
UniProt: