› 1r5p

X-ray diffraction
2.2Å resolution

Crystal Structure Analysis of KaiB from PCC7120

Released:
DOI: 10.2210/pdb1r5p/pdb
PDB entry 1r5p coloured by chain, front view.
PDB entry 1r5p coloured by chain, side view.
PDB entry 1r5p coloured by chain, top view.
Source organism: Nostoc sp. PCC 7120 = FACHB-418
Primary publication:
Anabaena circadian clock proteins KaiA and KaiB reveal a potential common binding site to their partner KaiC.
Garces RG, Wu N, Gillon W, Pai EF
EMBO J 23 1688-98 (2004)
PMID: 15071498

Function and Biology Details

Biochemical function:
  • not assigned
Biological process:
Cellular component:
  • not assigned
Sequence domains:
Structure domain:

Structure analysis Details

Assemblies composition:
homo dimer (preferred)
homo tetramer
Assembly name:
PDBe Complex ID:
PDB-CPX-187113 (preferred)
Entry contents:
1 distinct polypeptide molecule
Macromolecule:
Circadian clock oscillator protein KaiB Chains: A, B
Molecule details ›
Chains: A, B
Length: 108 amino acids
Theoretical weight: 12.29 KDa
Source organism: Nostoc sp. PCC 7120 = FACHB-418
Expression system: Escherichia coli BL21
UniProt:
  • Canonical: Q8YT41 (Residues: 1-108; Coverage: 100%)
Gene names: alr2885, kaiB
Sequence domains: KaiB domain
Structure domains: Glutaredoxin

Ligands and Environments

No bound ligands
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: APS BEAMLINE 14-ID-B
Spacegroup: C2
Unit cell:
a: 104.755Å b: 36.387Å c: 54.14Å
α: 90° β: 98.83° γ: 90°
R-values:
R R work R free
0.212 0.212 0.251
Expression system: Escherichia coli BL21

Quick links

Citations

17 review citations

Evolution of protein fold in the presence of functional constraints.
Andreeva et al. (2006)
16 more

4 mentions without citation

Biophysical highlights from 54 years of macromolecular crystallography.
Richardson et al. (2014)
3 more