X-ray diffraction
1.85Å resolution

Structure of a Calmodulin Complex

Source organism: Homo sapiens
Entry authors: Birrane G, Soni A, Ladias JAA

Function and Biology Details

Biological process:
Cellular component:

Structure analysis Details

Assembly composition:
Non-polymer only dimer (preferred)
Entry contents:
2 distinct polypeptide molecules
Macromolecules (2 distinct):
Calmodulin-1 Chain: A
Molecule details ›
Chain: A
Length: 148 amino acids
Theoretical weight: 16.72 KDa
Source organism: Homo sapiens
Expression system: Escherichia coli
  • Canonical: P0DP23 (Residues: 2-149; Coverage: 99%)
Gene names: CALM, CALM1, CAM, CAM1
Sequence domains: EF-hand domain pair
Structure domains: EF-hand
Glutamate receptor ionotropic, NMDA 1 Chain: B
Molecule details ›
Chain: B
Length: 24 amino acids
Theoretical weight: 2.77 KDa
Source organism: Homo sapiens
Expression system: Not provided
  • Canonical: Q05586 (Residues: 875-898; Coverage: 3%)
Gene names: GRIN1, NMDAR1

Ligands and Environments

1 bound ligand:
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: NSLS BEAMLINE X12B
Spacegroup: C2
Unit cell:
a: 67.768Å b: 42.737Å c: 62.012Å
α: 90° β: 106.92° γ: 90°
R R work R free
0.184 0.181 0.232
Expression systems:
  • Escherichia coli
  • Not provided