PDBe 1qx2

X-ray diffraction
1.44Å resolution

X-ray Structure of Calcium-loaded Calbindomodulin (A Calbindin D9k Re-engineered to Undergo a Conformational Opening) at 1.44 A Resolution

Source organism: Bos taurus

Function and Biology Details

Biochemical function:
Biological process:
  • not assigned
Cellular component:

Structure analysis Details

Assemblies composition:
monomeric (preferred)
homo dimer
Entry contents:
1 distinct polypeptide molecule
Protein S100-G Chains: A, B
Molecule details ›
Chains: A, B
Length: 76 amino acids
Theoretical weight: 8.52 KDa
Source organism: Bos taurus
Expression system: Escherichia coli BL21(DE3)
  • Canonical: P02633 (Residues: 5-79; Coverage: 95%)
Gene names: CALB3, S100D, S100G
Sequence domains:
Structure domains: EF-hand

Ligands and Environments

2 bound ligands:

1 modified residue:

Experiments and Validation Details

Entry percentile scores
X-ray source: APS BEAMLINE 22-ID
Spacegroup: C2221
Unit cell:
a: 59.54Å b: 62.174Å c: 69.463Å
α: 90° β: 90° γ: 90°
R R work R free
0.158 0.156 0.194
Expression system: Escherichia coli BL21(DE3)