PDBe 1ir1

X-ray diffraction
1.8Å resolution

Crystal Structure of Spinach Ribulose-1,5-Bisphosphate Carboxylase/Oxygenase (Rubisco) Complexed with CO2, Mg2+ and 2-Carboxyarabinitol-1,5-Bisphosphate

Released:

Function and Biology Details

Structure analysis Details

Assembly composition:
hetero 16-mer (preferred)
Entry contents:
2 distinct polypeptide molecules
Macromolecules (2 distinct):
Ribulose bisphosphate carboxylase large chain Chains: A, B, C, D
Molecule details ›
Chains: A, B, C, D
Length: 475 amino acids
Theoretical weight: 52.85 KDa
Source organism: Spinacia oleracea
UniProt:
  • Canonical: P00875 (Residues: 1-475; Coverage: 100%)
Gene name: rbcL
Sequence domains:
Structure domains:
Ribulose bisphosphate carboxylase small chain 2, chloroplastic Chains: S, T, U, V
Molecule details ›
Chains: S, T, U, V
Length: 123 amino acids
Theoretical weight: 14.69 KDa
Source organism: Spinacia oleracea
UniProt:
  • Canonical: Q43832 (Residues: 58-180; Coverage: 68%)
Gene name: RBCS2
Sequence domains: Ribulose bisphosphate carboxylase, small chain
Structure domains: RuBisCO, small subunit

Ligands and Environments

2 bound ligands:

2 modified residues:

Experiments and Validation Details

Entry percentile scores
X-ray source: PHOTON FACTORY BEAMLINE BL-6A
Spacegroup: C2221
Unit cell:
a: 157.8Å b: 157.8Å c: 200.9Å
α: 90° β: 90° γ: 90°
R-values:
R R work R free
0.155 0.155 0.179