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Structure of the reaction centre from Rhodobacter sphaeroides carotenoidless strain R-26.1 reconstituted with spheroidene

X-ray diffraction
2.8Å resolution
PDB entry 1rgn coloured by chain, front view.
PDB entry 1rgn coloured by chain, side view.
PDB entry 1rgn coloured by chain, top view.
Source organism: Cereibacter sphaeroides
Assembly composition:
hetero trimer (preferred)
Entry contents: 3 distinct polypeptide molecules

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Assemblies

Assembly 1 (preferred)
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Assembly Name: Reaction Centre
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Multimeric state: hetero trimer
Accessible surface area: 28843.36 Å2
Buried surface area: 36704.34 Å2
Dissociation area: 4,593.03 Å2
Dissociation energy (ΔGdiss): 45.22 kcal/mol
Dissociation entropy (TΔSdiss): 14.73 kcal/mol
Symmetry number: 1
PDBe Complex ID: PDB-CPX-142934

Macromolecules

Reaction center protein L chain
Chain: L
Length: 281 amino acids
Theoretical weight: 31.35 KDa
Source organism: Cereibacter sphaeroides
UniProt:
  • Canonical: P0C0Y8 (Residues: 2-282; Coverage: 100%)
Gene name: pufL
Pfam: Photosynthetic reaction centre protein
InterPro:
CATH: Photosystem II protein D1-like
SCOP: Bacterial photosystem II reaction centre, L and M subunits
Reaction center protein L chain in PDB entry 1rgn, assembly 1, front view.
Reaction center protein L chain in PDB entry 1rgn, assembly 1, side view.
Reaction center protein L chain in PDB entry 1rgn, assembly 1, top view.
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Reaction center protein M chain
Chain: M
Length: 307 amino acids
Theoretical weight: 34.4 KDa
Source organism: Cereibacter sphaeroides
UniProt:
  • Canonical: P0C0Y9 (Residues: 2-308; Coverage: 100%)
Gene name: pufM
Pfam: Photosynthetic reaction centre protein
InterPro:
CATH: Photosystem II protein D1-like
SCOP: Bacterial photosystem II reaction centre, L and M subunits
Reaction center protein M chain in PDB entry 1rgn, assembly 1, front view.
Reaction center protein M chain in PDB entry 1rgn, assembly 1, side view.
Reaction center protein M chain in PDB entry 1rgn, assembly 1, top view.
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Reaction center protein H chain
Chain: H
Length: 260 amino acids
Theoretical weight: 28.07 KDa
Source organism: Cereibacter sphaeroides
UniProt:
  • Canonical: P0C0Y7 (Residues: 1-260; Coverage: 100%)
Gene name: puhA
Pfam:
InterPro:
CATH:
SCOP:
Reaction center protein H chain in PDB entry 1rgn, assembly 1, front view.
Reaction center protein H chain in PDB entry 1rgn, assembly 1, side view.
Reaction center protein H chain in PDB entry 1rgn, assembly 1, top view.
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