PDBe 2bcx

X-ray diffraction
2Å resolution

Crystal structure of calmodulin in complex with a ryanodine receptor peptide


Function and Biology Details

Structure analysis Details

Assembly composition:
hetero dimer (preferred)
Entry contents:
2 distinct polypeptide molecules
Macromolecules (2 distinct):
Calmodulin Chain: A
Molecule details ›
Chain: A
Length: 148 amino acids
Theoretical weight: 16.72 KDa
Source organism: Gallus gallus
Expression system: Escherichia coli
  • Canonical: P62149 (Residues: 2-149; Coverage: 99%)
Gene names: CALM, CAM, RCJMB04_24e7
Sequence domains: EF-hand domain pair
Ryanodine receptor 1 Chain: B
Molecule details ›
Chain: B
Length: 30 amino acids
Theoretical weight: 3.63 KDa
Source organism: Oryctolagus cuniculus
Expression system: Not provided
  • Canonical: P11716 (Residues: 3614-3643; Coverage: 1%)
Gene name: RYR1

Ligands and Environments

1 bound ligand:

No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: RIGAKU
Spacegroup: P212121
Unit cell:
a: 38.1Å b: 44.1Å c: 90.3Å
α: 90° β: 90° γ: 90°
R R work R free
0.214 0.213 0.249
Expression systems:
  • Escherichia coli
  • Not provided