2gbl

X-ray diffraction
2.8Å resolution

Crystal Structure of Full Length Circadian Clock Protein KaiC with Phosphorylation Sites

Released:

Function and Biology Details

Structure analysis Details

Assembly composition:
hetero hexamer (preferred)
PDBe Complex ID:
PDB-CPX-181275 (preferred)
Entry contents:
2 distinct polypeptide molecules
Macromolecules (2 distinct):
Circadian clock oscillator protein KaiC Chains: A, B, E, F
Molecule details ›
Chains: A, B, E, F
Length: 519 amino acids
Theoretical weight: 58.23 KDa
Source organism: Synechococcus elongatus PCC 7942 = FACHB-805
Expression system: Escherichia coli BL21(DE3)
UniProt:
  • Canonical: Q79PF4 (Residues: 1-519; Coverage: 100%)
Gene names: Synpcc7942_1216, kaiC, see0011
Sequence domains: KaiC
Structure domains: P-loop containing nucleotide triphosphate hydrolases
Circadian clock oscillator protein KaiC Chains: C, D
Molecule details ›
Chains: C, D
Length: 519 amino acids
Theoretical weight: 58.15 KDa
Source organism: Synechococcus elongatus PCC 7942 = FACHB-805
Expression system: Escherichia coli BL21(DE3)
UniProt:
  • Canonical: Q79PF4 (Residues: 1-519; Coverage: 100%)
Gene names: Synpcc7942_1216, kaiC, see0011
Sequence domains: KaiC
Structure domains: P-loop containing nucleotide triphosphate hydrolases

Ligands and Environments

2 bound ligands:
2 modified residues:

Experiments and Validation Details

Entry percentile scores
X-ray source: APS BEAMLINE 22-ID, APS BEAMLINE 5ID-B
Spacegroup: P212121
Unit cell:
a: 132.873Å b: 135.576Å c: 204.951Å
α: 90° β: 90° γ: 90°
R-values:
R R work R free
0.23 0.23 0.29
Expression system: Escherichia coli BL21(DE3)