X-ray diffraction
1.81Å resolution

Calmodulin in complex with strontium

Source organism: Homo sapiens
Primary publication:
Crystallographic snapshots of initial steps in the collapse of the calmodulin central helix.
Acta Crystallogr. D Biol. Crystallogr. 70 24-30 (2014)
PMID: 24419375

Function and Biology Details

Structure analysis Details

Assemblies composition:
monomeric (preferred)
homo dimer
Entry contents:
1 distinct polypeptide molecule
Calmodulin-2 Chains: A, C
Molecule details ›
Chains: A, C
Length: 149 amino acids
Theoretical weight: 16.85 KDa
Source organism: Homo sapiens
Expression system: Escherichia coli BL21(DE3)
  • Canonical: P0DP24 (Residues: 1-149; Coverage: 100%)
Gene names: CALM2, CAM2, CAMB
Sequence domains: EF-hand domain pair

Ligands and Environments

1 bound ligand:

No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: MAX II BEAMLINE I911-2
Spacegroup: P1
Unit cell:
a: 24.34Å b: 53.94Å c: 59.37Å
α: 88.51° β: 96.61° γ: 93.96°
R R work R free
0.208 0.206 0.251
Expression system: Escherichia coli BL21(DE3)