4q5u

X-ray diffraction
1.95Å resolution

Structure of calmodulin bound to its recognition site from calcineurin

Released:

Function and Biology Details

Reaction catalysed:
[a protein]-serine/threonine phosphate + H(2)O = [a protein]-serine/threonine + phosphate

Structure analysis Details

Assembly composition:
hetero dimer (preferred)
PDBe Complex ID:
PDB-CPX-143944 (preferred)
Entry contents:
2 distinct polypeptide molecules
Macromolecules (2 distinct):
Calmodulin-1 Chain: A
Molecule details ›
Chain: A
Length: 149 amino acids
Theoretical weight: 16.85 KDa
Source organism: Homo sapiens
Expression system: Escherichia coli BL21(DE3)
UniProt:
  • Canonical: P0DP23 (Residues: 1-149; Coverage: 100%)
Gene names: CALM, CALM1, CAM, CAM1
Sequence domains: EF-hand domain pair
Protein phosphatase 3 catalytic subunit alpha Chain: C
Molecule details ›
Chain: C
Length: 24 amino acids
Theoretical weight: 2.82 KDa
Source organism: Homo sapiens
Expression system: Not provided
UniProt:
  • Canonical: Q08209 (Residues: 391-414; Coverage: 5%)
Gene names: CALNA, CNA, PPP3CA

Ligands and Environments

1 bound ligand:
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: APS BEAMLINE 22-ID
Spacegroup: C2221
Unit cell:
a: 105.499Å b: 111.033Å c: 39.448Å
α: 90° β: 90° γ: 90°
R-values:
R R work R free
0.216 0.215 0.248
Expression systems:
  • Escherichia coli BL21(DE3)
  • Not provided